ORACLE 10046、10053 事件
内容参考 http://blog.csdn.net/tianlesoftware/article/details/5857023
10046 、10053 事件
平时用PL/SQL，在开发的过程中经常会有这样一种情况：发出一个语句后一直在运行，看了查询优化器给的执行计划，还是不能准确地了解数据库内部是怎么运行的？有一种想干嘛又无从下手的感觉，就像小时候拆卸钟表一样想弄清楚表针为什么会转，靠着什么一直再转；在这里10046结合tkprof工具以及10053事件可以解决这种烦恼（SQL_TRACE也可以进行跟踪，不过ORACLE已经不建议使用该功能:Although it is possible to enable the SQL Trace facility for a session or for an instance, it is recommended that you use the DBMS_SESSION or DBMS_MONITOR packages instead. When the SQL Trace facility is enabled for a session or for an instance, performance statistics for all SQL statements executed in a user session or in the instance are placed into trace files. Using the SQL Trace facility can have a severe performance impact and may result in increased system overhead, excessive CPU usage, and inadequate disk space.）；
10046 事件
SQL> select * from v$version;
BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Prod
PL/SQL Release 10.2.0.3.0 - Production
CORE 10.2.0.3.0 Production
TNS for 32-bit Windows: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production
10046 事件按照收集信息内容，可以分成4个级别：
Level 1： 等同于SQL_TRACE 的功能
Level 4： 在Level 1的基础上增加收集绑定变量的信息
Level 8： 在Level 1 的基础上增加等待事件的信息
Level 12：等同于Level 4+Level 8, 即同时收集绑定变量信息和等待事件信息。
session 135 发出以下语句
--找出trace文件
SELECT D.VALUE || '\' || LOWER(RTRIM(I.INSTANCE, CHR(0))) || '_ora_' ||
P.SPID || '.trc' AS "trace_file_name"
FROM (SELECT P.SPID
FROM V$MYSTAT M, V$SESSION S, V$PROCESS P
WHERE M.STATISTIC# = 1
AND S.SID = M.SID
AND P.ADDR = S.PADDR) P,
(SELECT T.INSTANCE
FROM V$THREAD T, V$PARAMETER V
WHERE V.NAME = 'thread'
AND (V.VALUE = 0 OR T.THREAD# = TO_NUMBER(V.VALUE))) I,
(SELECT VALUE FROM V$PARAMETER WHERE NAME = 'user_dump_dest') D;
E:\ORACLE\PRODUCT\10.2.0\ADMIN\ORCL\UDUMP\ORCL_ora_17728.trc
--标示trace文件名称，便于查找. tracefile_identifier 描述:
http://docs.oracle.com/cd/E11882_01/server.112/e25513/initparams259.htm#REFRN10220
ALTER SESSION SET tracefile_identifier='YJG';
ALTER SESSION SET EVENTS '10046 trace name context forever,level 12';
SELECT *
FROM (SELECT M.INITIALENTRY,
M.VENDORNO_,
M.COMPANY_ID,
M.ENTRYTYPE,
M.POSTINGDATE,
M.POSTINGGROUP,
M.AMOUNT,
M.INVT_INIT
FROM ODS_DETAILEDVENDORLEDG_ENTRY M
WHERE NOT EXISTS
(SELECT 1
FROM DM_COMPANY T, CONNECT_JYYB_DEL F
WHERE T.COMPANY_ID IS NOT NULL
AND T.DB_NAME = F.DATABASENAME
AND T.DB_TABLE_DESC = F.COMPANYCODE
AND T.DB_IP = F.DATABASEADRESS
AND T.COMPANY_ID = M.COMPANY_ID
AND F.CONNECTVENDORNO = M.VENDORNO_
AND f.departno=m.initialentry)) B
WHERE COMPANY_ID = 1
AND INITIALENTRYGLOBALDIM_1 = 212
AND B.INVT_INIT = 0
AND B.ENTRYTYPE <> 2
AND B.POSTINGDATE <= TO_DATE('20130406', 'yyyy-mm-dd')
AND B.POSTINGGROUP != 'EMP-YB';
ALTER SESSION SET EVENTS '10046 trace name context OFF';
--TKPROF 用法（官方文档）
Syntax of TKPROF:
TKPROF is run from the operating system prompt. The syntax is:
tkprof filename1 filename2 [waits=yes|no] [sort=option] [print=n]
[aggregate=yes|no] [insert=filename3] [sys=yes|no] [table=schema.table]
[explain=user/password] [record=filename4] [width=n]
The input and output files are the only required arguments. If you invoke TKPROF without arguments, then the tool displays online help. Use the arguments in Table 21-2 with TKPROF.
Table 21-2 TKPROF Arguments
Argument Description
filename1
Specifies the input file, a trace file containing statistics produced by the SQL Trace facility. This file can be either a trace file produced for a single session, or a file produced by concatenating individual trace files from multiple sessions.
filename2
Specifies the file to which TKPROF writes its formatted output.
WAITS
Specifies whether to record summary for any wait events found in the trace file. Values are YES or NO. The default is YES.
SORTS
Sorts traced SQL statements in descending order of specified sort option before listing them into the output file. If multiple options are specified, then the output is sorted in descending order by the sum of the values specified in the sort options. If you omit this parameter, then TKPROF lists statements into the output file in order of first use. Sort options are listed as follows:
PRSCNT
Number of times parsed.
PRSCPU
CPU time spent parsing.
PRSELA
Elapsed time spent parsing.
PRSDSK
Number of physical reads from disk during parse.
PRSQRY
Number of consistent mode block reads during parse.
PRSCU
Number of current mode block reads during parse.
PRSMIS
Number of library cache misses during parse.
EXECNT
Number of executes.
EXECPU
CPU time spent executing.
EXEELA
Elapsed time spent executing.
EXEDSK
Number of physical reads from disk during execute.
EXEQRY
Number of consistent mode block reads during execute.
EXECU
Number of current mode block reads during execute.
EXEROW
Number of rows processed during execute.
EXEMIS
Number of library cache misses during execute.
FCHCNT
Number of fetches.
FCHCPU
CPU time spent fetching.
FCHELA
Elapsed time spent fetching.
FCHDSK
Number of physical reads from disk during fetch.
FCHQRY
Number of consistent mode block reads during fetch.
FCHCU
Number of current mode block reads during fetch.
FCHROW
Number of rows fetched.
USERID
Userid of user that parsed the cursor.
PRINT
Lists only the first integer sorted SQL statements from the output file. If you omit this parameter, then TKPROF lists all traced SQL statements. This parameter does not affect the optional SQL script. The SQL script always generates insert data for all traced SQL statements.
AGGREGATE
If you specify AGGREGATE = NO, then TKPROF does not aggregate multiple users of the same SQL text.
INSERT
Creates a SQL script that stores the trace file statistics in the database. TKPROF creates this script with the name filename3. This script creates a table and inserts a row of statistics for each traced SQL statement into the table.
SYS
Enables and disables the listing of SQL statements issued by the user SYS, or recursive SQL statements, into the output file. The default value of YES causes TKPROF to list these statements. The value of NO causes TKPROF to omit them. This parameter does not affect the optional SQL script. The SQL script always inserts statistics for all traced SQL statements, including recursive SQL statements.
TABLE
Specifies the schema and name of the table into which TKPROF temporarily places execution plans before writing them to the output file. If the specified table exists, then TKPROF deletes all rows in the table, uses it for the EXPLAIN PLAN statement (which writes more rows into the table), and then deletes those rows. If this table does not exist, then TKPROF creates it, uses it, and then drops it.
The specified user must be able to issue INSERT, SELECT, and DELETE statements against the table. If the table does not exist, then the user must also be able to issue CREATE TABLE and DROP TABLE statements. For the privileges to issue these statements, see the Oracle Database SQL Language Reference.
This option allows multiple individuals to run TKPROF concurrently with the same user in the EXPLAIN value. These individuals can specify different TABLE values and avoid destructively interfering with each other's processing on the temporary plan table.
If you use the EXPLAIN parameter without the TABLE parameter, then TKPROF uses the table PROF$PLAN_TABLE in the schema of the user specified by the EXPLAIN parameter. If you use the TABLE parameter without the EXPLAIN parameter, then TKPROF ignores the TABLE parameter.
If no plan table exists, TKPROF creates the table PROF$PLAN_TABLE and then drops it at the end.
EXPLAIN
Determines the execution plan for each SQL statement in the trace file and writes these execution plans to the output file. TKPROF determines execution plans by issuing the EXPLAIN PLAN statement after connecting to Oracle Database with the user and password specified in this parameter. The specified user must have CREATE SESSION system privileges. TKPROF takes longer to process a large trace file if the EXPLAIN option is used.
RECORD
Creates a SQL script with the specified filename4 with all of the nonrecursive SQL in the trace file. You can use this script to replay the user events from the trace file.
WIDTH
An integer that controls the output line width of some TKPROF output, such as the explain plan. This parameter is useful for post-processing of TKPROF output.
-- The SQL Trace facility and TKPROF let you accurately assess the efficiency of the SQL statements an application runs. For best results, use these tools with EXPLAIN PLAN rather than using EXPLAIN PLAN alone.
session 146
tkprof ORCL_ora_17728_YJG.trc ORCL_ora_17728.txt sys=no insert=ORCL_ora_17728_yjg.sql;
SQL> show parameter user_dump
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
user_dump_dest string E:\ORACLE\PRODUCT\10.2.0\ADMIN\ORCL\UDUMP
--在该路径下打开文件ORCL_ora_17728.txt 内容如下
TKPROF: Release 10.2.0.4.0 - Production on Wed Apr 24 14:45:27 2013
Copyright (c) 1982, 2007, Oracle. All rights reserved.
Trace file: ORCL_ora_17728_YJG.trc
Sort options: default
********************************************************************************
count = number of times OCI procedure was executed
cpu = cpu time in seconds executing
elapsed = elapsed time in seconds executing
disk = number of physical reads of buffers from disk
query = number of buffers gotten for consistent read
current = number of buffers gotten in current mode (usually for update)
rows = number of rows processed by the fetch or execute call
********************************************************************************
begin :id := sys.dbms_transaction.local_transaction_id; end;
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 2 0.00 0.00 0 0 0 0
Execute 2 0.00 0.00 0 0 0 2
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 4 0.00 0.00 0 0 0 2
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 58
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 3 0.00 0.00
SQL*Net message from client 3 0.02 0.05
SQL*Net break/reset to client 1 0.00 0.00
********************************************************************************
SELECT *
FROM (SELECT M.INITIALENTRY,
M.VENDORNO_,
M.COMPANY_ID,
M.ENTRYTYPE,
M.POSTINGDATE,
M.POSTINGGROUP,
M.AMOUNT,
M.INVT_INIT
FROM ODS_DETAILEDVENDORLEDG_ENTRY M
WHERE NOT EXISTS
(SELECT 1
FROM DM_COMPANY T, CONNECT_JYYB_DEL F
WHERE T.COMPANY_ID IS NOT NULL
AND T.DB_NAME = F.DATABASENAME
AND T.DB_TABLE_DESC = F.COMPANYCODE
AND T.DB_IP = F.DATABASEADRESS
AND T.COMPANY_ID = M.COMPANY_ID
AND F.CONNECTVENDORNO = M.VENDORNO_
AND f.departno=m.initialentry)) B
WHERE COMPANY_ID = 1
AND INITIALENTRYGLOBALDIM_1 = 212
AND B.INVT_INIT = 0
AND B.ENTRYTYPE <> 2
AND B.POSTINGDATE <= TO_DATE('20130406', 'yyyy-mm-dd')
AND B.POSTINGGROUP != 'EMP-YB'
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.01 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 1 0.06 0.07 0 2072 0 100
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 3 0.08 0.08 0 2072 0 100
Misses in library cache during parse: 1
Optimizer mode: ALL_ROWS
Parsing user id: 58
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 3 0.00 0.00
SQL*Net message from client 3 0.02 0.02
********************************************************************************
ALTER SESSION SET EVENTS '10046 trace name context OFF'
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 2 0.00 0.00 0 0 0 0
Misses in library cache during parse: 0
Parsing user id: 58
********************************************************************************
OVERALL TOTALS FOR ALL NON-RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 4 0.01 0.00 0 0 0 0
Execute 4 0.00 0.00 0 0 0 2
Fetch 1 0.06 0.07 0 2072 0 100
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 9 0.08 0.08 0 2072 0 102
Misses in library cache during parse: 1
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 6 0.00 0.00
SQL*Net message from client 6 0.02 0.08
SQL*Net break/reset to client 1 0.00 0.00
OVERALL TOTALS FOR ALL RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 0 0.00 0.00 0 0 0 0
Execute 0 0.00 0.00 0 0 0 0
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 0 0.00 0.00 0 0 0 0
Misses in library cache during parse: 0
4 user SQL statements in session.
0 internal SQL statements in session.
4 SQL statements in session.
********************************************************************************
Trace file: ORCL_ora_17728_YJG.trc
Trace file compatibility: 10.01.00
Sort options: default
1 session in tracefile.
4 user SQL statements in trace file.
0 internal SQL statements in trace file.
4 SQL statements in trace file.
3 unique SQL statements in trace file.
112 lines in trace file.
0 elapsed seconds in trace file.
--行标题意义
CALL
Statistics are identified by the value of the CALL column
COUNT
Number of times a statement was parsed, executed, or fetched.
CPU
Total CPU time in seconds for all parse, execute, or fetch calls for the statement. This value is zero (0) if TIMED_STATISTICS is not turned on.
ELAPSED
Total elapsed time in seconds for all parse, execute, or fetch calls for the statement. This value is zero (0) if TIMED_STATISTICS is not turned on.
DISK
Total number of data blocks physically read from the data files on disk for all parse, execute, or fetch calls.
QUERY
Total number of buffers retrieved in consistent mode for all parse, execute, or fetch calls. Usually, buffers are retrieved in consistent mode for queries.
CURRENT
Total number of buffers retrieved in current mode. Buffers are retrieved in current mode for statements such as INSERT, UPDATE, and DELETE.
ROWS
Total number of rows processed by the SQL statement. This total does not include rows processed by subqueries of the SQL statement.
-- call 列各关键词意义
PARSE
Translates the SQL statement into an execution plan, including checks for proper security authorization and checks for the existence of tables, columns, and other referenced objects.
EXECUTE
Actual execution of the statement by Oracle. For INSERT, UPDATE, and DELETE statements, this modifies the data. For SELECT statements, this identifies the selected rows.
FETCH
Retrieves rows returned by a query. Fetches are only performed for SELECT statements.
--生成的脚本文件描述
Storing SQL Trace Facility Statistics
You might want to keep a history of the statistics generated by the SQL Trace facility for an application, and compare them over time. TKPROF can generate a SQL script that creates a table and inserts rows of statistics into it. This script contains:
•A CREATE TABLE statement that creates an output table named TKPROF_TABLE.
•INSERT statements that add rows of statistics, one for each traced SQL statement, to the TKPROF_TABLE.
After running TKPROF, you can run this script to store the statistics in the database.
Generating the TKPROF Output SQL Script
When you run TKPROF, use the INSERT parameter to specify the name of the generated SQL script. If you omit this parameter, then TKPROF does not generate a script.
Editing the TKPROF Output SQL Script
After TKPROF has created the SQL script, you might want to edit the script before running it. If you have created an output table for previously collected statistics, and if you want to add new statistics to this table, then remove the CREATE TABLE statement from the script. The script then inserts the new rows into the existing table.
If you have created multiple output tables, perhaps to store statistics from different databases in different tables, then edit the CREATE TABLE and INSERT statements to change the name of the output table.
--在刚才的路径下打开生成的脚本文件ORCL_ora_17728_yjg.sql
REM Edit and/or remove the following CREATE TABLE
REM statement as your needs dictate.
CREATE TABLE tkprof_table
(
date_of_insert DATE
,cursor_num NUMBER
,depth NUMBER
,user_id NUMBER
,parse_cnt NUMBER
,parse_cpu NUMBER
,parse_elap NUMBER
,parse_disk NUMBER
,parse_query NUMBER
,parse_current NUMBER
,parse_miss NUMBER
,exe_count NUMBER
,exe_cpu NUMBER
,exe_elap NUMBER
,exe_disk NUMBER
,exe_query NUMBER
,exe_current NUMBER
,exe_miss NUMBER
,exe_rows NUMBER
,fetch_count NUMBER
,fetch_cpu NUMBER
,fetch_elap NUMBER
,fetch_disk NUMBER
,fetch_query NUMBER
,fetch_current NUMBER
,fetch_rows NUMBER
,ticks NUMBER
,sql_statement LONG
);
set sqlterminator off
INSERT INTO tkprof_table VALUES
(
SYSDATE, 1, 0, 58, 2, 0, 57, 0, 0, 0, 0
, 2, 0, 397, 0, 0, 140733193388032, 0, 2
, 0, 0, 0, 0, 0, 0, 0, 34230
, 'begin :id := sys.dbms_transaction.local_transaction_id; end;
')
/
INSERT INTO tkprof_table VALUES
(
SYSDATE, 2, 0, 58, 1, 12001, 9045, 0, 0, 0, 1
, 1, 0, 37, 140733193388032, 0, 140733193388032, 0, 0
, 1, 68004, 71271, 0, 2072, 0, 100, 82118
, 'SELECT *
FROM (SELECT M.INITIALENTRY,
M.VENDORNO_,
M.COMPANY_ID,
M.ENTRYTYPE,
M.POSTINGDATE,
M.POSTINGGROUP,
M.AMOUNT,
M.INVT_INIT
FROM ODS_DETAILEDVENDORLEDG_ENTRY M
WHERE NOT EXISTS
(SELECT 1
FROM DM_COMPANY T, CONNECT_JYYB_DEL F
WHERE T.COMPANY_ID IS NOT NULL
AND T.DB_NAME = F.DATABASENAME
AND T.DB_TABLE_DESC = F.COMPANYCODE
AND T.DB_IP = F.DATABASEADRESS
AND T.COMPANY_ID = M.COMPANY_ID
AND F.CONNECTVENDORNO = M.VENDORNO_
AND f.departno=m.initialentry)) B
WHERE COMPANY_ID = 1
AND INITIALENTRYGLOBALDIM_1 = 212
AND B.INVT_INIT = 0
AND B.ENTRYTYPE <> 2
AND B.POSTINGDATE <= TO_DATE('20130406', 'yyyy-mm-dd')
AND B.POSTINGGROUP != ''EMP-YB''
')
/
INSERT INTO tkprof_table VALUES
(
SYSDATE, 1, 0, 58, 1, 0, 30, 0, 0, 0, 0
, 1, 0, 79, 140733193388032, 0, 140733193388032, 0, 0
, 0, 0, 0, 0, 0, 0, 0, 26202
, 'ALTER SESSION SET EVENTS ''10046 trace name context OFF''
')
/
set sqlterminator on
--该脚本可以修改，可以运行（保存了本次的跟踪历史）
内容参考：http://space.itpub.net/611609/viewspace-683744
10053 事件
对于10053事件的trace文件，我们只能直接阅读原始的trace文件，不能使用tkprof工具来处理，tkprof工具只能用来处理sql_trace 和 10046事件产生的trace文件。
10053事件有两个级别：
Level 2：2级是1级的一个子集，它包含以下内容：
Column statistics
Single Access Paths
Join Costs
Table Joins Considered
Join Methods Considered (NL/MS/HA)
Level 1： 1级比2级更详细，它包含2级的所有内容，在加如下内容：
Parameters used by the optimizer
Index statistics
session 194 发出下列命令
--找出trace文件
SELECT D.VALUE || '\' || LOWER(RTRIM(I.INSTANCE, CHR(0))) || '_ora_' ||
P.SPID || '.trc' AS "trace_file_name"
FROM (SELECT P.SPID
FROM V$MYSTAT M, V$SESSION S, V$PROCESS P
WHERE M.STATISTIC# = 1
AND S.SID = M.SID
AND P.ADDR = S.PADDR) P,
(SELECT T.INSTANCE
FROM V$THREAD T, V$PARAMETER V
WHERE V.NAME = 'thread'
AND (V.VALUE = 0 OR T.THREAD# = TO_NUMBER(V.VALUE))) I,
(SELECT VALUE FROM V$PARAMETER WHERE NAME = 'user_dump_dest') D;
E:\ORACLE\PRODUCT\10.2.0\ADMIN\ORCL\UDUMP\ORCL_ora_5988.trc
ALTER SESSION SET tracefile_identifier='YJG';
ALTER SESSION SET EVENTS '10053 trace name context forever';
select dname, ename from emp, dept
where emp.deptno = dept.deptno
and emp.ename =&B;
ALTER SESSION SET EVENTS '10053 trace name context off';
--打开ORCL_ora_5988.trc
*** TRACE DUMP CONTINUED FROM FILE e:\oracle\product\10.2.0\admin\ORCL\udump\ORCL_ora_5988_yjg.trc ***
Registered qb: SEL$1 0x7666ad0 (PARSER)
signature (): qb_name=SEL$1 nbfros=2 flg=0
fro(0): flg=4 objn=51249 hint_alias="DEPT"@"SEL$1"
fro(1): flg=4 objn=66236 hint_alias="EMP"@"SEL$1"
**************************
Predicate Move-Around (PM)
**************************
PM: Considering predicate move-around in SEL$1 (#0).
PM: Checking validity of predicate move-around in SEL$1 (#0).
CBQT: Validity checks failed for f435nnbak6z8a.
Query block (07666AD0) before join elimination:
SQL:******* UNPARSED QUERY IS *******
SELECT "DEPT"."DNAME" "DNAME","EMP"."ENAME" "ENAME" FROM "SCOTT"."EMP" "EMP","SCOTT"."DEPT" "DEPT" WHERE "EMP"."DEPTNO"="DEPT"."DEPTNO" AND "EMP"."ENAME"='YOUJINGE'
Query block (07666AD0) unchanged
CVM: Considering view merge in query block SEL$1 (#0)
Query block (07666AD0) before join elimination:
SQL:******* UNPARSED QUERY IS *******
SELECT "DEPT"."DNAME" "DNAME","EMP"."ENAME" "ENAME" FROM "SCOTT"."EMP" "EMP","SCOTT"."DEPT" "DEPT" WHERE "EMP"."DEPTNO"="DEPT"."DEPTNO" AND "EMP"."ENAME"='YOUJINGE'
Query block (07666AD0) unchanged
CBQT: Validity checks failed for f435nnbak6z8a.
***************
Subquery Unnest
***************
SU: Considering subquery unnesting in query block SEL$1 (#0)
*************************
Set-Join Conversion (SJC)
*************************
SJC: Considering set-join conversion in SEL$1 (#0).
**************************
Predicate Move-Around (PM)
**************************
PM: Considering predicate move-around in SEL$1 (#0).
PM: Checking validity of predicate move-around in SEL$1 (#0).
PM: PM bypassed: Outer query contains no views.
FPD: Considering simple filter push in SEL$1 (#0)
FPD: Current where clause predicates in SEL$1 (#0) :
"EMP"."DEPTNO"="DEPT"."DEPTNO" AND "EMP"."ENAME"='YOUJINGE'
kkogcp: try to generate transitive predicate from check constraints for SEL$1 (#0)
predicates with check contraints: "EMP"."DEPTNO"="DEPT"."DEPTNO" AND "EMP"."ENAME"='YOUJINGE'
after transitive predicate generation: "EMP"."DEPTNO"="DEPT"."DEPTNO" AND "EMP"."ENAME"='YOUJINGE'
finally: "EMP"."DEPTNO"="DEPT"."DEPTNO" AND "EMP"."ENAME"='YOUJINGE'
apadrv-start: call(in-use=584, alloc=0), compile(in-use=34104, alloc=0)
kkoqbc-start
: call(in-use=588, alloc=0), compile(in-use=34888, alloc=0)
******************************************
Current SQL statement for this session:
select dname, ename from emp, dept
where emp.deptno = dept.deptno
and emp.ename ='YOUJINGE'
*******************************************
Legend
The following abbreviations are used by optimizer trace.
CBQT - cost-based query transformation
JPPD - join predicate push-down
FPD - filter push-down
PM - predicate move-around
CVM - complex view merging
SPJ - select-project-join
SJC - set join conversion
SU - subquery unnesting
OBYE - order by elimination
ST - star transformation
qb - query block
LB - leaf blocks
DK - distinct keys
LB/K - average number of leaf blocks per key
DB/K - average number of data blocks per key
CLUF - clustering factor
NDV - number of distinct values
Resp - response cost
Card - cardinality
Resc - resource cost
NL - nested loops (join)
SM - sort merge (join)
HA - hash (join)
CPUCSPEED - CPU Speed
IOTFRSPEED - I/O transfer speed
IOSEEKTIM - I/O seek time
SREADTIM - average single block read time
MREADTIM - average multiblock read time
MBRC - average multiblock read count
MAXTHR - maximum I/O system throughput
SLAVETHR - average slave I/O throughput
dmeth - distribution method
1: no partitioning required
2: value partitioned
4: right is random (round-robin)
512: left is random (round-robin)
8: broadcast right and partition left
16: broadcast left and partition right
32: partition left using partitioning of right
64: partition right using partitioning of left
128: use hash partitioning dimension
256: use range partitioning dimension
2048: use list partitioning dimension
1024: run the join in serial
0: invalid distribution method
sel - selectivity
ptn - partition
*******************************************
Peeked values of the binds in SQL statement
*******************************************
***************************************
PARAMETERS USED BY THE OPTIMIZER
********************************
*************************************
PARAMETERS WITH ALTERED VALUES
******************************
*********************************
Bug Fix Control Environment
***************************
fix 4611850 = enabled
fix 4663804 = enabled
fix 4663698 = enabled
fix 4545833 = enabled
fix 3499674 = disabled
fix 4584065 = enabled
fix 4602374 = enabled
fix 4569940 = enabled
fix 4631959 = enabled
fix 4519340 = enabled
fix 4550003 = enabled
fix 4488689 = enabled
fix 3118776 = enabled
fix 4519016 = enabled
fix 4487253 = enabled
fix 4556762 = 15
fix 4728348 = enabled
fix 4723244 = enabled
fix 4554846 = enabled
fix 4175830 = enabled
fix 4722900 = enabled
fix 5094217 = enabled
fix 4904890 = enabled
fix 4483286 = disabled
fix 4969880 = disabled
fix 4711525 = enabled
fix 4717546 = enabled
fix 4904838 = enabled
fix 5005866 = enabled
fix 4600710 = enabled
fix 5129233 = enabled
fix 5195882 = enabled
fix 5084239 = enabled
fix 4595987 = enabled
fix 4134994 = enabled
fix 5104624 = enabled
fix 4908162 = enabled
fix 5015557 = enabled
fix 5240607 = enabled
*************************************
PARAMETERS WITH DEFAULT VALUES
******************************
optimizer_mode_hinted = false
optimizer_features_hinted = 0.0.0
parallel_execution_enabled = true
parallel_query_forced_dop = 0
parallel_dml_forced_dop = 0
parallel_ddl_forced_degree = 0
parallel_ddl_forced_instances = 0
_query_rewrite_fudge = 90
optimizer_features_enable = 10.2.0.3
_optimizer_search_limit = 5
cpu_count = 2
active_instance_count = 1
parallel_threads_per_cpu = 2
hash_area_size = 131072
bitmap_merge_area_size = 1048576
sort_area_size = 65536
sort_area_retained_size = 0
_sort_elimination_cost_ratio = 0
_optimizer_block_size = 8192
_sort_multiblock_read_count = 2
_hash_multiblock_io_count = 0
_db_file_optimizer_read_count = 16
_optimizer_max_permutations = 2000
pga_aggregate_target = 198656 KB
_pga_max_size = 204800 KB
_query_rewrite_maxdisjunct = 257
_smm_auto_min_io_size = 56 KB
_smm_auto_max_io_size = 248 KB
_smm_min_size = 198 KB
_smm_max_size = 39731 KB
_smm_px_max_size = 99328 KB
_cpu_to_io = 0
_optimizer_undo_cost_change = 10.2.0.3
parallel_query_mode = enabled
parallel_dml_mode = disabled
parallel_ddl_mode = enabled
optimizer_mode = all_rows
sqlstat_enabled = false
_optimizer_percent_parallel = 101
_always_anti_join = choose
_always_semi_join = choose
_optimizer_mode_force = true
_partition_view_enabled = true
_always_star_transformation = false
_query_rewrite_or_error = false
_hash_join_enabled = true
cursor_sharing = exact
_b_tree_bitmap_plans = true
star_transformation_enabled = false
_optimizer_cost_model = choose
_new_sort_cost_estimate = true
_complex_view_merging = true
_unnest_subquery = true
_eliminate_common_subexpr = true
_pred_move_around = true
_convert_set_to_join = false
_push_join_predicate = true
_push_join_union_view = true
_fast_full_scan_enabled = true
_optim_enhance_nnull_detection = true
_parallel_broadcast_enabled = true
_px_broadcast_fudge_factor = 100
_ordered_nested_loop = true
_no_or_expansion = false
optimizer_index_cost_adj = 100
optimizer_index_caching = 0
_system_index_caching = 0
_disable_datalayer_sampling = false
query_rewrite_enabled = true
query_rewrite_integrity = enforced
_query_cost_rewrite = true
_query_rewrite_2 = true
_query_rewrite_1 = true
_query_rewrite_expression = true
_query_rewrite_jgmigrate = true
_query_rewrite_fpc = true
_query_rewrite_drj = true
_full_pwise_join_enabled = true
_partial_pwise_join_enabled = true
_left_nested_loops_random = true
_improved_row_length_enabled = true
_index_join_enabled = true
_enable_type_dep_selectivity = true
_improved_outerjoin_card = true
_optimizer_adjust_for_nulls = true
_optimizer_degree = 0
_use_column_stats_for_function = true
_subquery_pruning_enabled = true
_subquery_pruning_mv_enabled = false
_or_expand_nvl_predicate = true
_like_with_bind_as_equality = false
_table_scan_cost_plus_one = true
_cost_equality_semi_join = true
_default_non_equality_sel_check = true
_new_initial_join_orders = true
_oneside_colstat_for_equijoins = true
_optim_peek_user_binds = true
_minimal_stats_aggregation = true
_force_temptables_for_gsets = false
workarea_size_policy = auto
_smm_auto_cost_enabled = true
_gs_anti_semi_join_allowed = true
_optim_new_default_join_sel = true
optimizer_dynamic_sampling = 2
_pre_rewrite_push_pred = true
_optimizer_new_join_card_computation = true
_union_rewrite_for_gs = yes_gset_mvs
_generalized_pruning_enabled = true
_optim_adjust_for_part_skews = true
_force_datefold_trunc = false
statistics_level = typical
_optimizer_system_stats_usage = true
skip_unusable_indexes = true
_remove_aggr_subquery = true
_optimizer_push_down_distinct = 0
_dml_monitoring_enabled = true
_optimizer_undo_changes = false
_predicate_elimination_enabled = true
_nested_loop_fudge = 100
_project_view_columns = true
_local_communication_costing_enabled = true
_local_communication_ratio = 50
_query_rewrite_vop_cleanup = true
_slave_mapping_enabled = true
_optimizer_cost_based_transformation = linear
_optimizer_mjc_enabled = true
_right_outer_hash_enable = true
_spr_push_pred_refspr = true
_optimizer_cache_stats = false
_optimizer_cbqt_factor = 50
_optimizer_squ_bottomup = true
_fic_area_size = 131072
_optimizer_skip_scan_enabled = true
_optimizer_cost_filter_pred = false
_optimizer_sortmerge_join_enabled = true
_optimizer_join_sel_sanity_check = true
_mmv_query_rewrite_enabled = true
_bt_mmv_query_rewrite_enabled = true
_add_stale_mv_to_dependency_list = true
_distinct_view_unnesting = false
_optimizer_dim_subq_join_sel = true
_optimizer_disable_strans_sanity_checks = 0
_optimizer_compute_index_stats = true
_push_join_union_view2 = true
_optimizer_ignore_hints = false
_optimizer_random_plan = 0
_query_rewrite_setopgrw_enable = true
_optimizer_correct_sq_selectivity = true
_disable_function_based_index = false
_optimizer_join_order_control = 3
_optimizer_cartesian_enabled = true
_optimizer_starplan_enabled = true
_extended_pruning_enabled = true
_optimizer_push_pred_cost_based = true
_sql_model_unfold_forloops = run_time
_enable_dml_lock_escalation = false
_bloom_filter_enabled = true
_update_bji_ipdml_enabled = 0
_optimizer_extended_cursor_sharing = udo
_dm_max_shared_pool_pct = 1
_optimizer_cost_hjsmj_multimatch = true
_optimizer_transitivity_retain = true
_px_pwg_enabled = true
optimizer_secure_view_merging = true
_optimizer_join_elimination_enabled = true
flashback_table_rpi = non_fbt
_optimizer_cbqt_no_size_restriction = true
_optimizer_enhanced_filter_push = true
_optimizer_filter_pred_pullup = true
_rowsrc_trace_level = 0
_simple_view_merging = true
_optimizer_rownum_pred_based_fkr = true
_optimizer_better_inlist_costing = all
_optimizer_self_induced_cache_cost = false
_optimizer_min_cache_blocks = 10
_optimizer_or_expansion = depth
_optimizer_order_by_elimination_enabled = true
_optimizer_outer_to_anti_enabled = true
_selfjoin_mv_duplicates = true
_dimension_skip_null = true
_force_rewrite_enable = false
_optimizer_star_tran_in_with_clause = true
_optimizer_complex_pred_selectivity = true
_optimizer_connect_by_cost_based = true
_gby_hash_aggregation_enabled = true
_globalindex_pnum_filter_enabled = true
_fix_control_key = 0
_optimizer_skip_scan_guess = false
_enable_row_shipping = false
_row_shipping_threshold = 80
_row_shipping_explain = false
_optimizer_rownum_bind_default = 10
_first_k_rows_dynamic_proration = true
_optimizer_native_full_outer_join = off
*********************************
Bug Fix Control Environment
***************************
fix 4611850 = enabled
fix 4663804 = enabled
fix 4663698 = enabled
fix 4545833 = enabled
fix 3499674 = disabled
fix 4584065 = enabled
fix 4602374 = enabled
fix 4569940 = enabled
fix 4631959 = enabled
fix 4519340 = enabled
fix 4550003 = enabled
fix 4488689 = enabled
fix 3118776 = enabled
fix 4519016 = enabled
fix 4487253 = enabled
fix 4556762 = 15
fix 4728348 = enabled
fix 4723244 = enabled
fix 4554846 = enabled
fix 4175830 = enabled
fix 4722900 = enabled
fix 5094217 = enabled
fix 4904890 = enabled
fix 4483286 = disabled
fix 4969880 = disabled
fix 4711525 = enabled
fix 4717546 = enabled
fix 4904838 = enabled
fix 5005866 = enabled
fix 4600710 = enabled
fix 5129233 = enabled
fix 5195882 = enabled
fix 5084239 = enabled
fix 4595987 = enabled
fix 4134994 = enabled
fix 5104624 = enabled
fix 4908162 = enabled
fix 5015557 = enabled
fix 5240607 = enabled
***************************************
PARAMETERS IN OPT_PARAM HINT
****************************
***************************************
Column Usage Monitoring is ON: tracking level = 1
***************************************
****************
QUERY BLOCK TEXT
****************
select dname, ename from emp, dept
where emp.deptno = dept.deptno
and emp.ename ='YOUJINGE'
*********************
QUERY BLOCK SIGNATURE
*********************
qb name was generated
signature (optimizer): qb_name=SEL$1 nbfros=2 flg=0
fro(0): flg=0 objn=51249 hint_alias="DEPT"@"SEL$1"
fro(1): flg=0 objn=66236 hint_alias="EMP"@"SEL$1"
*****************************
SYSTEM STATISTICS INFORMATION
*****************************
Using NOWORKLOAD Stats
CPUSPEED: 470 millions instruction/sec
IOTFRSPEED: 4096 bytes per millisecond (default is 4096)
IOSEEKTIM: 10 milliseconds (default is 10)
***************************************
BASE STATISTICAL INFORMATION
***********************
Table Stats::
Table: DEPT Alias: DEPT
#Rows: 5 #Blks: 5 AvgRowLen: 15.00
Column (#1): DEPTNO(NUMBER)
AvgLen: 3.00 NDV: 5 Nulls: 0 Density: 0.2 Min: 10 Max: 50
Index Stats::
Index: PK_DEPT Col#: 1
LVLS: 0 #LB: 1 #DK: 5 LB/K: 1.00 DB/K: 1.00 CLUF: 2.00
***********************
Table Stats::
Table: EMP Alias: EMP
#Rows: 14 #Blks: 4 AvgRowLen: 42.00
Column (#8): DEPTNO(NUMBER)
AvgLen: 3.00 NDV: 3 Nulls: 2 Density: 0.33333 Min: 10 Max: 30
***************************************
SINGLE TABLE ACCESS PATH
Column (#2): ENAME(VARCHAR2)
AvgLen: 6.00 NDV: 12 Nulls: 2 Density: 0.083333
Table: EMP Alias: EMP
Card: Original: 14 Rounded: 1 Computed: 0.86 Non Adjusted: 0.86
Access Path: TableScan
Cost: 3.01 Resp: 3.01 Degree: 0
Cost_io: 3.00 Cost_cpu: 33269
Resp_io: 3.00 Resp_cpu: 33269
Best:: AccessPath: TableScan
Cost: 3.01 Degree: 1 Resp: 3.01 Card: 0.86 Bytes: 0
***************************************
SINGLE TABLE ACCESS PATH
Table: DEPT Alias: DEPT
Card: Original: 5 Rounded: 5 Computed: 5.00 Non Adjusted: 5.00
Access Path: TableScan
Cost: 3.01 Resp: 3.01 Degree: 0
Cost_io: 3.00 Cost_cpu: 36457
Resp_io: 3.00 Resp_cpu: 36457
Best:: AccessPath: TableScan
Cost: 3.01 Degree: 1 Resp: 3.01 Card: 5.00 Bytes: 0
***************************************
OPTIMIZER STATISTICS AND COMPUTATIONS
***************************************
GENERAL PLANS
***************************************
Considering cardinality-based initial join order.
Permutations for Starting Table :0
***********************
Join order[1]: EMP[EMP]#0 DEPT[DEPT]#1
***************
Now joining: DEPT[DEPT]#1
***************
NL Join
Outer table: Card: 0.86 Cost: 3.01 Resp: 3.01 Degree: 1 Bytes: 9
Inner table: DEPT Alias: DEPT
Access Path: TableScan
NL Join: Cost: 6.01 Resp: 6.01 Degree: 0
Cost_io: 6.00 Cost_cpu: 69726
Resp_io: 6.00 Resp_cpu: 69726
Access Path: index (UniqueScan)
Index: PK_DEPT
resc_io: 1.00 resc_cpu: 8341
ix_sel: 0.2 ix_sel_with_filters: 0.2
NL Join: Cost: 4.01 Resp: 4.01 Degree: 1
Cost_io: 4.00 Cost_cpu: 41611
Resp_io: 4.00 Resp_cpu: 41611
Access Path: index (AllEqUnique)
Index: PK_DEPT
resc_io: 1.00 resc_cpu: 8341
ix_sel: 0.2 ix_sel_with_filters: 0.2
NL Join: Cost: 4.01 Resp: 4.01 Degree: 1
Cost_io: 4.00 Cost_cpu: 41611
Resp_io: 4.00 Resp_cpu: 41611
Best NL cost: 4.01
resc: 4.01 resc_io: 4.00 resc_cpu: 41611
resp: 4.01 resp_io: 4.00 resp_cpu: 41611
Join Card: 0.86 = outer (0.86) * inner (5.00) * sel (0.2)
Join Card - Rounded: 1 Computed: 0.86
SM Join
Outer table:
resc: 3.01 card 0.86 bytes: 9 deg: 1 resp: 3.01
Inner table: DEPT Alias: DEPT
resc: 3.01 card: 5.00 bytes: 11 deg: 1 resp: 3.01
using dmeth: 2 #groups: 1
SORT resource Sort statistics
Sort width: 231 Area size: 202752 Max Area size: 40684544
Degree: 1
Blocks to Sort: 1 Row size: 20 Total Rows: 1
Initial runs: 1 Merge passes: 0 IO Cost / pass: 0
Total IO sort cost: 0 Total CPU sort cost: 5645344
Total Temp space used: 0
SORT resource Sort statistics
Sort width: 231 Area size: 202752 Max Area size: 40684544
Degree: 1
Blocks to Sort: 1 Row size: 23 Total Rows: 5
Initial runs: 1 Merge passes: 0 IO Cost / pass: 0
Total IO sort cost: 0 Total CPU sort cost: 5645867
Total Temp space used: 0
SM join: Resc: 8.01 Resp: 8.01 [multiMatchCost=0.00]
SM cost: 8.01
resc: 8.01 resc_io: 6.00 resc_cpu: 11360938
resp: 8.01 resp_io: 6.00 resp_cpu: 11360938
HA Join
Outer table:
resc: 3.01 card 0.86 bytes: 9 deg: 1 resp: 3.01
Inner table: DEPT Alias: DEPT
resc: 3.01 card: 5.00 bytes: 11 deg: 1 resp: 3.01
using dmeth: 2 #groups: 1
Cost per ptn: 0.50 #ptns: 1
hash_area: 0 (max=0) Hash join: Resc: 6.51 Resp: 6.51 [multiMatchCost=0.00]
HA cost: 6.51
resc: 6.51 resc_io: 6.00 resc_cpu: 2893048
resp: 6.51 resp_io: 6.00 resp_cpu: 2893048
Best:: JoinMethod: NestedLoop
Cost: 4.01 Degree: 1 Resp: 4.01 Card: 0.86 Bytes: 20
***********************
Best so far: Table#: 0 cost: 3.0059 card: 0.8571 bytes: 9
Table#: 1 cost: 4.0074 card: 0.8571 bytes: 20
***********************
Join order[2]: DEPT[DEPT]#1 EMP[EMP]#0
***************
Now joining: EMP[EMP]#0
***************
NL Join
Outer table: Card: 5.00 Cost: 3.01 Resp: 3.01 Degree: 1 Bytes: 11
Inner table: EMP Alias: EMP
Access Path: TableScan
NL Join: Cost: 9.04 Resp: 9.04 Degree: 0
Cost_io: 9.00 Cost_cpu: 202803
Resp_io: 9.00 Resp_cpu: 202803
Best NL cost: 9.04
resc: 9.04 resc_io: 9.00 resc_cpu: 202803
resp: 9.04 resp_io: 9.00 resp_cpu: 202803
Join Card: 0.86 = outer (5.00) * inner (0.86) * sel (0.2)
Join Card - Rounded: 1 Computed: 0.86
SM Join
Outer table:
resc: 3.01 card 5.00 bytes: 11 deg: 1 resp: 3.01
Inner table: EMP Alias: EMP
resc: 3.01 card: 0.86 bytes: 9 deg: 1 resp: 3.01
using dmeth: 2 #groups: 1
SORT resource Sort statistics
Sort width: 231 Area size: 202752 Max Area size: 40684544
Degree: 1
Blocks to Sort: 1 Row size: 23 Total Rows: 5
Initial runs: 1 Merge passes: 0 IO Cost / pass: 0
Total IO sort cost: 0 Total CPU sort cost: 5645867
Total Temp space used: 0
SORT resource Sort statistics
Sort width: 231 Area size: 202752 Max Area size: 40684544
Degree: 1
Blocks to Sort: 1 Row size: 20 Total Rows: 1
Initial runs: 1 Merge passes: 0 IO Cost / pass: 0
Total IO sort cost: 0 Total CPU sort cost: 5645344
Total Temp space used: 0
SM join: Resc: 8.01 Resp: 8.01 [multiMatchCost=0.00]
SM cost: 8.01
resc: 8.01 resc_io: 6.00 resc_cpu: 11360938
resp: 8.01 resp_io: 6.00 resp_cpu: 11360938
SM Join (with index on outer)
Access Path: index (FullScan)
Index: PK_DEPT
resc_io: 3.00 resc_cpu: 23214
ix_sel: 1 ix_sel_with_filters: 1
Cost: 3.00 Resp: 3.00 Degree: 1
Outer table:
resc: 3.00 card 5.00 bytes: 11 deg: 1 resp: 3.00
Inner table: EMP Alias: EMP
resc: 3.01 card: 0.86 bytes: 9 deg: 1 resp: 3.01
using dmeth: 2 #groups: 1
SORT resource Sort statistics
Sort width: 231 Area size: 202752 Max Area size: 40684544
Degree: 1
Blocks to Sort: 1 Row size: 20 Total Rows: 1
Initial runs: 1 Merge passes: 0 IO Cost / pass: 0
Total IO sort cost: 0 Total CPU sort cost: 5645344
Total Temp space used: 0
SM join: Resc: 7.01 Resp: 7.01 [multiMatchCost=0.00]
HA Join
Outer table:
resc: 3.01 card 5.00 bytes: 11 deg: 1 resp: 3.01
Inner table: EMP Alias: EMP
resc: 3.01 card: 0.86 bytes: 9 deg: 1 resp: 3.01
using dmeth: 2 #groups: 1
Cost per ptn: 0.50 #ptns: 1
hash_area: 0 (max=0) Hash join: Resc: 6.51 Resp: 6.51 [multiMatchCost=0.00]
HA cost: 6.51
resc: 6.51 resc_io: 6.00 resc_cpu: 2893248
resp: 6.51 resp_io: 6.00 resp_cpu: 2893248
Join order aborted: cost > best plan cost
***********************
(newjo-stop-1) k:0, spcnt:0, perm:2, maxperm:2000
*********************************
Number of join permutations tried: 2
*********************************
(newjo-save) [1 0 ]
Final - All Rows Plan: Best join order: 1
Cost: 4.0074 Degree: 1 Card: 1.0000 Bytes: 20
Resc: 4.0074 Resc_io: 4.0000 Resc_cpu: 41611
Resp: 4.0074 Resp_io: 4.0000 Resc_cpu: 41611
kkoipt: Query block SEL$1 (#0)
******* UNPARSED QUERY IS *******
SELECT "DEPT"."DNAME" "DNAME","EMP"."ENAME" "ENAME" FROM "SCOTT"."EMP" "EMP","SCOTT"."DEPT" "DEPT" WHERE "EMP"."ENAME"='YOUJINGE' AND "EMP"."DEPTNO" IS NOT NULL AND "EMP"."DEPTNO"="DEPT"."DEPTNO"
kkoqbc-end
: call(in-use=33276, alloc=0), compile(in-use=36884, alloc=0)
apadrv-end: call(in-use=33276, alloc=0), compile(in-use=37472, alloc=0)
sql_id=f435nnbak6z8a.
Current SQL statement for this session:
select dname, ename from emp, dept
where emp.deptno = dept.deptno
and emp.ename ='YOUJINGE'
============
Plan Table
============
------------------------------------------------+-----------------------------------+
| Id | Operation | Name | Rows | Bytes | Cost | Time |
------------------------------------------------+-----------------------------------+
| 0 | SELECT STATEMENT | | | | 4 | |
| 1 | NESTED LOOPS | | 1 | 20 | 4 | 00:00:01 |
| 2 | TABLE ACCESS FULL | EMP | 1 | 9 | 3 | 00:00:01 |
| 3 | TABLE ACCESS BY INDEX ROWID | DEPT | 1 | 11 | 1 | 00:00:01 |
| 4 | INDEX UNIQUE SCAN | PK_DEPT | 1 | | 0 | |
------------------------------------------------+-----------------------------------+
Predicate Information:
----------------------
2 - filter(("EMP"."ENAME"='YOUJINGE' AND "EMP"."DEPTNO" IS NOT NULL))
4 - access("EMP"."DEPTNO"="DEPT"."DEPTNO")
Content of other_xml column
===========================
db_version : 10.2.0.3
parse_schema : SCOTT
plan_hash : 351108634
Outline Data:
/*+
BEGIN_OUTLINE_DATA
IGNORE_OPTIM_EMBEDDED_HINTS
OPTIMIZER_FEATURES_ENABLE('10.2.0.3')
ALL_ROWS
OUTLINE_LEAF(@"SEL$1")
FULL(@"SEL$1" "EMP"@"SEL$1")
INDEX_RS_ASC(@"SEL$1" "DEPT"@"SEL$1" ("DEPT"."DEPTNO"))
LEADING(@"SEL$1" "EMP"@"SEL$1" "DEPT"@"SEL$1")
USE_NL(@"SEL$1" "DEPT"@"SEL$1")
END_OUTLINE_DATA
*/
Optimizer environment:
optimizer_mode_hinted = false
optimizer_features_hinted = 0.0.0
parallel_execution_enabled = true
parallel_query_forced_dop = 0
parallel_dml_forced_dop = 0
parallel_ddl_forced_degree = 0
parallel_ddl_forced_instances = 0
_query_rewrite_fudge = 90
optimizer_features_enable = 10.2.0.3
_optimizer_search_limit = 5
cpu_count = 2
active_instance_count = 1
parallel_threads_per_cpu = 2
hash_area_size = 131072
bitmap_merge_area_size = 1048576
sort_area_size = 65536
sort_area_retained_size = 0
_sort_elimination_cost_ratio = 0
_optimizer_block_size = 8192
_sort_multiblock_read_count = 2
_hash_multiblock_io_count = 0
_db_file_optimizer_read_count = 16
_optimizer_max_permutations = 2000
pga_aggregate_target = 198656 KB
_pga_max_size = 204800 KB
_query_rewrite_maxdisjunct = 257
_smm_auto_min_io_size = 56 KB
_smm_auto_max_io_size = 248 KB
_smm_min_size = 198 KB
_smm_max_size = 39731 KB
_smm_px_max_size = 99328 KB
_cpu_to_io = 0
_optimizer_undo_cost_change = 10.2.0.3
parallel_query_mode = enabled
parallel_dml_mode = disabled
parallel_ddl_mode = enabled
optimizer_mode = all_rows
sqlstat_enabled = false
_optimizer_percent_parallel = 101
_always_anti_join = choose
_always_semi_join = choose
_optimizer_mode_force = true
_partition_view_enabled = true
_always_star_transformation = false
_query_rewrite_or_error = false
_hash_join_enabled = true
cursor_sharing = exact
_b_tree_bitmap_plans = true
star_transformation_enabled = false
_optimizer_cost_model = choose
_new_sort_cost_estimate = true
_complex_view_merging = true
_unnest_subquery = true
_eliminate_common_subexpr = true
_pred_move_around = true
_convert_set_to_join = false
_push_join_predicate = true
_push_join_union_view = true
_fast_full_scan_enabled = true
_optim_enhance_nnull_detection = true
_parallel_broadcast_enabled = true
_px_broadcast_fudge_factor = 100
_ordered_nested_loop = true
_no_or_expansion = false
optimizer_index_cost_adj = 100
optimizer_index_caching = 0
_system_index_caching = 0
_disable_datalayer_sampling = false
query_rewrite_enabled = true
query_rewrite_integrity = enforced
_query_cost_rewrite = true
_query_rewrite_2 = true
_query_rewrite_1 = true
_query_rewrite_expression = true
_query_rewrite_jgmigrate = true
_query_rewrite_fpc = true
_query_rewrite_drj = true
_full_pwise_join_enabled = true
_partial_pwise_join_enabled = true
_left_nested_loops_random = true
_improved_row_length_enabled = true
_index_join_enabled = true
_enable_type_dep_selectivity = true
_improved_outerjoin_card = true
_optimizer_adjust_for_nulls = true
_optimizer_degree = 0
_use_column_stats_for_function = true
_subquery_pruning_enabled = true
_subquery_pruning_mv_enabled = false
_or_expand_nvl_predicate = true
_like_with_bind_as_equality = false
_table_scan_cost_plus_one = true
_cost_equality_semi_join = true
_default_non_equality_sel_check = true
_new_initial_join_orders = true
_oneside_colstat_for_equijoins = true
_optim_peek_user_binds = true
_minimal_stats_aggregation = true
_force_temptables_for_gsets = false
workarea_size_policy = auto
_smm_auto_cost_enabled = true
_gs_anti_semi_join_allowed = true
_optim_new_default_join_sel = true
optimizer_dynamic_sampling = 2
_pre_rewrite_push_pred = true
_optimizer_new_join_card_computation = true
_union_rewrite_for_gs = yes_gset_mvs
_generalized_pruning_enabled = true
_optim_adjust_for_part_skews = true
_force_datefold_trunc = false
statistics_level = typical
_optimizer_system_stats_usage = true
skip_unusable_indexes = true
_remove_aggr_subquery = true
_optimizer_push_down_distinct = 0
_dml_monitoring_enabled = true
_optimizer_undo_changes = false
_predicate_elimination_enabled = true
_nested_loop_fudge = 100
_project_view_columns = true
_local_communication_costing_enabled = true
_local_communication_ratio = 50
_query_rewrite_vop_cleanup = true
_slave_mapping_enabled = true
_optimizer_cost_based_transformation = linear
_optimizer_mjc_enabled = true
_right_outer_hash_enable = true
_spr_push_pred_refspr = true
_optimizer_cache_stats = false
_optimizer_cbqt_factor = 50
_optimizer_squ_bottomup = true
_fic_area_size = 131072
_optimizer_skip_scan_enabled = true
_optimizer_cost_filter_pred = false
_optimizer_sortmerge_join_enabled = true
_optimizer_join_sel_sanity_check = true
_mmv_query_rewrite_enabled = true
_bt_mmv_query_rewrite_enabled = true
_add_stale_mv_to_dependency_list = true
_distinct_view_unnesting = false
_optimizer_dim_subq_join_sel = true
_optimizer_disable_strans_sanity_checks = 0
_optimizer_compute_index_stats = true
_push_join_union_view2 = true
_optimizer_ignore_hints = false
_optimizer_random_plan = 0
_query_rewrite_setopgrw_enable = true
_optimizer_correct_sq_selectivity = true
_disable_function_based_index = false
_optimizer_join_order_control = 3
_optimizer_cartesian_enabled = true
_optimizer_starplan_enabled = true
_extended_pruning_enabled = true
_optimizer_push_pred_cost_based = true
_sql_model_unfold_forloops = run_time
_enable_dml_lock_escalation = false
_bloom_filter_enabled = true
_update_bji_ipdml_enabled = 0
_optimizer_extended_cursor_sharing = udo
_dm_max_shared_pool_pct = 1
_optimizer_cost_hjsmj_multimatch = true
_optimizer_transitivity_retain = true
_px_pwg_enabled = true
optimizer_secure_view_merging = true
_optimizer_join_elimination_enabled = true
flashback_table_rpi = non_fbt
_optimizer_cbqt_no_size_restriction = true
_optimizer_enhanced_filter_push = true
_optimizer_filter_pred_pullup = true
_rowsrc_trace_level = 0
_simple_view_merging = true
_optimizer_rownum_pred_based_fkr = true
_optimizer_better_inlist_costing = all
_optimizer_self_induced_cache_cost = false
_optimizer_min_cache_blocks = 10
_optimizer_or_expansion = depth
_optimizer_order_by_elimination_enabled = true
_optimizer_outer_to_anti_enabled = true
_selfjoin_mv_duplicates = true
_dimension_skip_null = true
_force_rewrite_enable = false
_optimizer_star_tran_in_with_clause = true
_optimizer_complex_pred_selectivity = true
_optimizer_connect_by_cost_based = true
_gby_hash_aggregation_enabled = true
_globalindex_pnum_filter_enabled = true
_fix_control_key = 0
_optimizer_skip_scan_guess = false
_enable_row_shipping = false
_row_shipping_threshold = 80
_row_shipping_explain = false
_optimizer_rownum_bind_default = 10
_first_k_rows_dynamic_proration = true
_optimizer_native_full_outer_join = off
*********************************
Bug Fix Control Environment
***************************
fix 4611850 = enabled
fix 4663804 = enabled
fix 4663698 = enabled
fix 4545833 = enabled
fix 3499674 = disabled
fix 4584065 = enabled
fix 4602374 = enabled
fix 4569940 = enabled
fix 4631959 = enabled
fix 4519340 = enabled
fix 4550003 = enabled
fix 4488689 = enabled
fix 3118776 = enabled
fix 4519016 = enabled
fix 4487253 = enabled
fix 4556762 = 15
fix 4728348 = enabled
fix 4723244 = enabled
fix 4554846 = enabled
fix 4175830 = enabled
fix 4722900 = enabled
fix 5094217 = enabled
fix 4904890 = enabled
fix 4483286 = disabled
fix 4969880 = disabled
fix 4711525 = enabled
fix 4717546 = enabled
fix 4904838 = enabled
fix 5005866 = enabled
fix 4600710 = enabled
fix 5129233 = enabled
fix 5195882 = enabled
fix 5084239 = enabled
fix 4595987 = enabled
fix 4134994 = enabled
fix 5104624 = enabled
fix 4908162 = enabled
fix 5015557 = enabled
fix 5240607 = enabled
Query Block Registry:
*********************
SEL$1 0x7666ad0 (PARSER) [FINAL]
Optimizer State Dump: call(in-use=38812, alloc=0), compile(in-use=56848, alloc=0)