Oradebug 学习

 

说明

 oradebug主要是给oracle支持人员使用的，尽管很早便有，但oracle官网很少有记载。他是个sql*plus命令行工具，有sysdba的权限就可以登入，无需特别设置。他可以被用于：

1）追踪进程，或者是你的，或者是外部的

2）确定进程往哪个trc文件写

3）转储：数据文件头、内部oracle结构等

4）挂起进程，暂时的

5）确定实例使用了哪些共享内存块和信号量

6）找出RAC实例使用了哪些互联地址和协议

7）修改SGA中的数据结构

 

 

SQL> oradebughelp

HELP           [command]                 Describe one or all commands

SETMYPID                                 Debug currentprocess

SETOSPID                          Set OS pid of process todebug

SETORAPID      ['force']        Set Oracle pid of process to debug

SETORAPNAME                    Set Oracle process name todebug

SHORT_STACK                              Get abridged OSstack

CURRENT_SQL                              Get current SQL

DUMP           [addr]  Invoke named dump

PDUMP          [interval=]     Invoke named dump periodically

               [ndumps=]  [addr]

DUMPSGA        [bytes]                   Dump fixed SGA

DUMPLIST                                 Print a listof available dumps

EVENT                              Set trace event in process

SESSION_EVENT                      Set trace event in session

DUMPVAR        [level]  Print/dump a fixed PGA/SGA/UGAvariable

DUMPTYPE      

  Print/dump an address withtype info

SETVAR           Modify a fixed PGA/SGA/UGAvariable

PEEK           [level]      Print/Dump memory

POKE                 Modify memory

WAKEUP                           Wake up Oracle process

SUSPEND                                  Suspendexecution

RESUME                                   Resumeexecution

FLUSH                                    Flushpending writes to trace file

CLOSE_TRACE                              Close trace file

TRACEFILE_NAME                           Get name of tracefile

SETTRACEFILEID         Settracefile identifier

LKDEBUG                                  Invoke globalenqueue service debugger

NSDBX                                    Invoke CGSname-service debugger

-G                Parallel oradebug command prefix

-R                Parallel oradebug prefix (return output

SETINST              Set instance list in double quotes

SGATOFILE               Dump SGA to file; dirname in doublequotes

DMPCOWSGA      Dump & map SGAas COW; dirname in double quotes

MAPCOWSGA               Map SGA as COW; dirname in doublequotes

HANGANALYZE    [level] [syslevel]        Analyze system hang

FFBEGIN                                  Flash Freezethe Instance

FFDEREGISTER                             FF deregisterinstance from cluster

FFTERMINST                               Call exit andterminate instance

FFRESUMEINST                             Resume the flashfrozen instance

FFSTATUS                                 Flash freezestatus of instance

SKDSTTPCS                Helps translate PCs to names

WATCH         

  Watch aregion of memory

DELETE         watchpoint    Delete a watchpoint

SHOW           watchpoints        Show  watchpoints

DIRECT_ACCESS  Fixed table access

IPC                                      Dump ipcinformation

UNLIMIT                                  Unlimit thesize of the trace file

CALL           [-t count] [arg1]...[argn]  Invoke function witharguments

CORE                                     Dump corewithout crashing process

PROCSTAT                                 Dump processstatistics

 

 

 

 

使用方法举例

【获得 当前实例的trace文件】

SQL> oradebugsetmypid

Statement processed.

SQL>oradebug tracefile_name  ---获得文件名称

/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6877.trc

 

【获得非当前进程的trace】

selectpid,spid,username from v$process;

v$process 下的pid 是Oracle 的ID。spid 是系统的ID。

 

selecta.username,a.sid ,a.serial#,b.spid  fromv$session a,v$process b where a.paddr=b.addr;

v$session下的sid是指session id，b.spid是指系统ID。

 

 

oradebug setospid  --跟踪系统进程

oradebug setorapid --跟踪ORACLE进程

SQL> oradebugsetospid 6150

Oracle pid: 44, Unixprocess pid: 6150, image: oracle@dgdemo1

SQL> oradebugtracefile_name

/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc

SQL> oradebugsetorapid 44

Oracle pid: 44, Unixprocess pid: 6150, image: oracle@dgdemo1

SQL> oradebugtracefile_name

/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc

可以看到 文件名称都是一样的

 

 

【用oradebug做session级10046或10053】

oradebugsetmypid  ---跟踪当前的进程

oradebug unlimit        ---取消对trace文件大小的限制

oradebug session_event 10046 trace name context forever ,level4  --开启10046事件跟踪

oradebug tracefile_name ---查看trace的路径

oradebug event 10046 trace name context off --关闭10046事件跟踪

oradebug session_event 10053 trace name context forever ,level4  ---开启10053事件跟踪

oradebug event 10053 trace name context off --关闭10053事件跟踪

 

 

SQL> oradebugsetmypid

Statement processed.

SQL>  oradebug unlimit

Statement processed.

SQL> oradebugsession_event 10046 trace name context forever ,level 4

Statement processed.

SQL> oradebugtracefile_name

/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_11602.trc

SQL>  !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_11602.trc

-rw-r----- 1 oracle asmadmin 1629 12月 1516:56 /u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_11602.trc

SQL> oradebugevent 10046 trace name context off

Statement processed.

SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_11602.trc

-rw-r----- 1 oracle asmadmin 1829 12月 1516:57 /u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_11602.trc

 

 

【用oradebug做oracle process级10046】

跟踪oracle ID 14，系统进程6150的10046是事件情况

SQL>  select a.username,a.sid,a.serial#,b.spid  from v$sessiona,v$process b where a.paddr=b.addr;

SOE                                    11          3 6150

 

SQL>  select pid,spid,username from v$process;

        44 6150                     oracle

 

oradebug setorapid44

oradebug unlimit

oradebug event 10046trace name context forever ,level 4

oradebug event 10046trace name context off

oradebugtracefile_name

 

SQL> oradebugsetorapid 44

Oracle pid: 44, Unixprocess pid: 6150, image: oracle@dgdemo1

SQL> oradebugevent 10046 trace name context forever ,level 4

Statement processed.

SQL> oradebugtracefile_name

/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc

SQL> oradebugevent 10046 trace name context off

Statement processed.

SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc

-rw-r----- 1 oracle asmadmin 707546 12月 1517:19 /u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc

 

 

 

 

【radebug系统hang住原因分析】

oradebug setmypid

oradebug unlimit

oradebugsetinst all   --RAC环境

oradebug hanganalyze 3  -- 级别一般指定为3足够了

oradebug-g def dump systemstate 10  --RAC环境

oradebugtracefile_name

 

 

SQL> oradebugsetmypid

Statement processed.

SQL> oradebugunlimit

Statement processed.

SQL> oradebughanganalyze 3

Hang Analysis in/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_12457.trc

SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_12457.trc

-rw-r----- 1 oracle asmadmin 5547 12月 1517:20 /u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_12457.trc

 

SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_12457.trc

-rw-r----- 1 oracle asmadmin 5547 12月 1517:20 /u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_12457.trc

 

SQL> oradebugtracefile_name

/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_12457.trc

SQL> exit

 

 

 

 

【获取某进程的状态信息】  必须是Oracle 的进程

oradebug setospid6150

oradebug dumpprocessstate 10

oradebugtracefile_name

 

SQL> oradebugsetospid 6150

Oracle pid: 44, Unixprocess pid: 6150, image: oracle@dgdemo1

SQL> oradebugdump processstate 10

Statement processed.

SQL> oradebugtracefile_name

/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc

 

SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc

-rw-r----- 1 oracle asmadmin 1629700 12月 15 17:22/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc

 

SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc

-rw-r----- 1 oracle asmadmin 1629700 12月 15 17:22/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc

 

SQL> exit

 

【获得系统状态】

oradebug setospid6150

oradebug unlimit

oradebug dump systemstate 10  -使用level10 可以获得较全的信息

oradebugTRACEFILE_NAME

oradebug close_trace

 

 

 

【获取进程错误信息状态】

oradebug setospid6150

oradebug dumperrorstack 3

 

SQL> oradebugsetospid 6150

Oracle pid: 44, Unixprocess pid: 6150, image: oracle@dgdemo1

SQL> oradebugdump errorstack 3

Statement processed.

SQL> oradebugtracefile_name

/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc

 

SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc

-rw-r----- 1 oracle asmadmin 5403981 12月 15 17:23/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc

 

SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc

-rw-r----- 1 oracle asmadmin 5403981 12月 15 17:23/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc

 

SQL> exit

 

 

【追踪造成错误信息的原因，如ORA-04031】

oradebug event 4031trace name errorstack level 3

 

SQL> oradebugsetospid 6150

Oracle pid: 44, Unixprocess pid: 6150, image: oracle@dgdemo1

SQL> oradebugevent 4031 trace name errorstack level 3

Statement processed.

SQL> oradebugtracefile_name

/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc

 

 

oradebug flush 将当前trace buffer中的条目 刷新到trace文件中

 

 

 

【dump 相关文件信息】

 

SQL> oradebugdumplist

TRACE_BUFFER_ON

TRACE_BUFFER_OFF

LATCHES

PROCESSSTATE

SYSTEMSTATE

INSTANTIATIONSTATE

REFRESH_OS_STATS

SQLNET_SERVER_TRACE

CROSSIC

CONTEXTAREA

HANGDIAG_HEADER

HEAPDUMP

HEAPDUMP_ADDR

POKE_ADDRESS

POKE_LENGTH

POKE_VALUE

POKE_VALUE0

GLOBAL_AREA

REALFREEDUMP

FLUSH_JAVA_POOL

POOL_SIMULATOR

PGA_DETAIL_GET

PGA_DETAIL_DUMP

PGA_DETAIL_CANCEL

PGA_SUMMARY

MODIFIED_PARAMETERS

EVENT_TSM_TEST

ERRORSTACK

CALLSTACK

TEST_STACK_DUMP

TEST_GET_CALLER

RECORD_CALLSTACK

EXCEPTION_DUMP

BG_MESSAGES

ENQUEUES

KSTDUMPCURPROC

KSTDUMPALLPROCS

KSTDUMPALLPROCS_CLUSTER

SIMULATE_EOV

KSFQP_LIMIT

KSKDUMPTRACE

DBSCHEDULER

LDAP_USER_DUMP

LDAP_KERNEL_DUMP

DUMP_ALL_OBJSTATS

DUMPGLOBALDATA

HANGANALYZE

HANGANALYZE_PROC

HNGDET_MEM_USAGE_DUMP

DEAD_CLEANUP_STATE

HANGANALYZE_GLOBAL

GES_STATE

CGS

OCR

CSS

CRS

SYSTEMSTATE_GLOBAL

GIPC

MMAN_ALLOC_MEMORY

MMAN_CREATE_DEF_REQUEST

MMAN_CREATE_IMM_REQUEST

MMAN_IMM_REQUEST

DUMP_ALL_COMP_GRANULE_ADDRS

DUMP_ALL_COMP_GRANULES

DUMP_ALL_REQS

DUMP_TRANSFER_OPS

DUMP_ADV_SNAPSHOTS

ADJUST_SCN

NEXT_SCN_WRAP

CONTROLF

FLUSH_CACHE

FULL_DUMPS

BUFFERS

RECOVERY

SET_TSN_P1

GLOBAL_BUFFER_DUMP

BUFFER

PIN_BLOCKS

BC_SANITY_CHECK

PIN_RANDOM_BLOCKS

SET_NBLOCKS

CHECK_ROREUSE_SANITY

DUMP_PINNED_BUFFER_HISTORY

KCBO_OBJ_CHECK_DUMP

KCB_WORKING_SET_DUMP

KCBS_ADV_INT_DUMP

KCBI_DUMP_FREELIST

SCN_AUTO_ROLLOVER_TS_OVERRIDE

REDOLOGS

ARCHIVE_ERROR

LOGHIST

REDOHDR

LOGERROR

OPEN_FILES

DATA_ERR_ON

DATA_READ_ERR_ON

DATA_ERR_OFF

BLK0_FMTCHG

UPDATE_BLOCK0_FORMAT

TR_SET_BLOCK

TR_SET_ALL_BLOCKS

TR_SET_SIDE

TR_CRASH_AFTER_WRITE

TR_READ_ONE_SIDE

TR_CORRUPT_ONE_SIDE

TR_RESET_NORMAL

TEST_DB_ROBUSTNESS

LOCKS

GC_ELEMENTS

FILE_HDRS

KRB_CORRUPT_INTERVAL

KRB_CORRUPT_SIZE

KRB_CORRUPT_REPEAT

KRB_CORRUPT_OFFSET

KRB_PIECE_FAIL

KRB_OPTIONS

KRB_FAIL_INPUT_FILENO

KRB_SIMULATE_NODE_AFFINITY

KRB_TRACE

KRB_BSET_DAYS

KRB_SET_TIME_SWITCH

KRB_OVERWRITE_ACTION

KRB_CORRUPT_SPHEADER_INTERVAL

KRB_CORRUPT_SPHEADER_REPEAT

KRB_CORRUPT_SPBITMAP_INTERVAL

KRB_CORRUPT_SPBITMAP_REPEAT

KRB_CORRUPT_SPBAD_INTERVAL

KRB_CORRUPT_SPBAD_REPEAT

KRB_UNUSED_OPTION

KRBMRSR_LIMIT

KRBMROR_LIMIT

KRBABR_TRACE

KRDRSBF

KRC_TRACE

KRA_OPTIONS

KRA_TRACE

FBTAIL

FBINC

FBHDR

FLASHBACK_GEN

KTPR_DEBUG

DUMP_TEMP

DROP_SEGMENTS

TEST_SPACEBG

TREEDUMP

LONGF_CREATE

KDLIDMP

ROW_CACHE

LIBRARY_CACHE

LIBRARY_CACHE_OBJECT

CURSORDUMP

CURSORTRACE

CURSOR_STATS

XS_SESSION_STATE

SHARED_SERVER_STATE

LISTENER_REGISTRATION

JAVAINFO

KXFPCLEARSTATS

KXFPDUMPTRACE

KXFPBLATCHTEST

KXFXSLAVESTATE

KXFXCURSORSTATE

KXFRHASHMAP

WORKAREATAB_DUMP

KUPPLATCHTEST

OBJECT_CACHE

SAVEPOINTS

RULESETDUMP

RULESETDUMP_ADDR

FAILOVER

OLAP_DUMP

SELFTESTASM

ASMDISK_ERR_ON

ASMDISK_READ_ERR_ON

ASMDISK_ERR_OFF

ASM_EVENREAD

IOERREMUL

IOERREMULRNG

ALRT_TEST

AWR_TEST

AWR_FLUSH_TABLE_ON

AWR_FLUSH_TABLE_OFF

ASHDUMP

ASHDUMPSECONDS

MMON_TEST

ATSK_TEST

HM_FW_TRACE

HM_FDG_VERS

IR_FW_TRACE

KSDTRADV_TEST

 

具体使用方法

SQL>oradebug setmypid

Statementprocessed.

SQL>oradebug dump LOCKS 10

Statementprocessed.

SQL>oradebug tracefile_name

/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_12730.trc

 

具体 参考http://psoug.org/reference/oradebug.html

 

 

 

 

【Trace  SQL】

使用DBMS_SYSTEM包：

 select a.username,a.sid ,a.serial#,b.spid fromv$session a,v$process b  wherea.paddr=b.addr;

 SOE                                    11          3 oradebug setospid

 

execute dbms_system.set_sql_trace_in_session(11,3,true); 开启对进程6150的跟踪

 

execute dbms_system.set_sql_trace_in_session(11,3,false); 关闭

 

SQL> l

  1* select a.username,a.sid ,a.serial#,b.spidfrom v$session a,v$process b  wherea.paddr=b.addr

SQL> executedbms_system.set_sql_trace_in_session(11,3,true);

 

PL/SQL proceduresuccessfully completed.

 

SQL> executedbms_system.set_sql_trace_in_session(11,3,false);

 

PL/SQL proceduresuccessfully completed.

 

 

 

使用oradebug

oradebug setospid6150

oradebug event 10046trace name context forever,level 4

oradebug event 10046trace name context off

 

SQL> oradebugsetospid 6150

Oracle pid: 44, Unixprocess pid: 6150, image: oracle@dgdemo1

SQL> oradebugevent 10046 trace name context forever,level 4

Statement processed.

SQL> oradebugevent 10046 trace name context off

Statement processed.

 

 

 

参考

http://blog.csdn.net/tianlesoftware/article/details/6525628

http://blog.sina.com.cn/s/blog_61cd89f60102ee3j.html