【impdp】IMPDP中的TRANSFORM参数--【数据泵】EXPDP导出表结构(真实案例)后传
在上一篇文章【数据泵】EXPDP导出表结构(真实案例) 中：http://blog.itpub.net/26736162/viewspace-1657828/ ，由于表的storage参数存储很大，导致不能导入到测试库，我提出了2种办法，但是今天经过网友selectshen (http://blog.itpub.net/28539951/)的提醒说是有一个参数TRANSFORM可以解决这个问题，于是就研究了一下这个参数，发现大牛的一篇文章，http://blog.itpub.net/26736162/viewspace-1662276/ ，然后自己又去官网查看了这个参数的详细解释，颇有收获，现分享给大家。
[oracle@rhel6_lhr dpdump]$ impdp lhr/lhr directory=DATA_PUMP_DIR dumpfile=lhrsql20150515.dmp logfile=imp_exptest.log TRANSFORM=storage:n TRANSFORM=SEGMENT_CREATION:n
Import: Release 11.2.0.3.0 - Production on 星期二 5月 19 15:51:50 2015
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
连接到: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
已成功加载/卸载了主表 "LHR"."SYS_IMPORT_FULL_01"
启动 "LHR"."SYS_IMPORT_FULL_01": lhr/******** directory=DATA_PUMP_DIR dumpfile=lhrsql20150515.dmp logfile=imp_exptest.log TRANSFORM=storage:n TRANSFORM=SEGMENT_CREATION:n
处理对象类型 SCHEMA_EXPORT/USER
ORA-31684: 对象类型 USER:"LHR" 已存在
处理对象类型 SCHEMA_EXPORT/SYSTEM_GRANT
处理对象类型 SCHEMA_EXPORT/ROLE_GRANT
处理对象类型 SCHEMA_EXPORT/DEFAULT_ROLE
处理对象类型 SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA
处理对象类型 SCHEMA_EXPORT/DB_LINK
处理对象类型 SCHEMA_EXPORT/SEQUENCE/SEQUENCE
处理对象类型 SCHEMA_EXPORT/TABLE/TABLE
处理对象类型 SCHEMA_EXPORT/TABLE/GRANT/OWNER_GRANT/OBJECT_GRANT
处理对象类型 SCHEMA_EXPORT/TABLE/INDEX/INDEX
处理对象类型 SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT
处理对象类型 SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS
处理对象类型 SCHEMA_EXPORT/TABLE/COMMENT
处理对象类型 SCHEMA_EXPORT/PACKAGE/PACKAGE_SPEC
处理对象类型 SCHEMA_EXPORT/FUNCTION/FUNCTION
处理对象类型 SCHEMA_EXPORT/FUNCTION/GRANT/OWNER_GRANT/OBJECT_GRANT
处理对象类型 SCHEMA_EXPORT/PROCEDURE/PROCEDURE
处理对象类型 SCHEMA_EXPORT/PROCEDURE/GRANT/OWNER_GRANT/OBJECT_GRANT
处理对象类型 SCHEMA_EXPORT/PACKAGE/COMPILE_PACKAGE/PACKAGE_SPEC/ALTER_PACKAGE_SPEC
处理对象类型 SCHEMA_EXPORT/FUNCTION/ALTER_FUNCTION
处理对象类型 SCHEMA_EXPORT/PROCEDURE/ALTER_PROCEDURE
ORA-39082: 对象类型 ALTER_PROCEDURE:"FXDM"."SP_STAT_MAKER_AWARD_FX" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"FXDM"."SP_FXDM_FX_MBR_MMKNG_FX_F" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"DPA"."TEST" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"DPA"."SP_FX_SF_CP_RL_D_SUM" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"FXDM"."SP_FXDM_FX_MBR_MMKNG_AMNT_F_T" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"FXDM"."SP_STAT_MAKER" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"FXDM"."SP_FXDM_FX_MBR_MMKNG_F" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"FXDM"."SP_FX_MBR_MMKNG_ROLE_MTH_H_N" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"TEST"."GBP_ZUOSHISHANG" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"DPA"."SP_GOLD_MBR_MMKNG_NGTN_F" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"DPA"."I_DW_SP_RPT_MMKT_NET_INFO_CNY" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"DPA"."I_DW_SP_RPT_MMKT_NET_INFO_FX" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"TEST"."NZD_ZUOSHISHANG" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"FXDM"."SP_GOLD_MBR_MMKNG_NGTN_F_OLD" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"FXDM"."SP_GOLD_MBR_MMKNG_NGTN_F_BK" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"FXDM"."SP_STAT_MAKER_OPTION" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"FXDM"."SP_STAT_MAKER_OPTION_N" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"FXDM"."SP_STAT_MAKER_N" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"SOR"."BST_QT_ARCHIVE" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"SOR"."FX_BST_QT_ARCHIVE" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"FXDM"."SP_HANDREPORT_MAKE_JPYAUD" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"TEST"."USD_ZUOSHISHANG" 已创建, 但带有编译警告
ORA-39082: 对象类型 ALTER_PROCEDURE:"FXDM"."SP_GOLD_MBR_MMKNG_NGTN_F" 已创建, 但带有编译警告
处理对象类型 SCHEMA_EXPORT/VIEW/VIEW
处理对象类型 SCHEMA_EXPORT/VIEW/GRANT/OWNER_GRANT/OBJECT_GRANT
ORA-39082: 对象类型 VIEW:"DPA"."V_IRS_OFST_DTLS_F" 已创建, 但带有编译警告
处理对象类型 SCHEMA_EXPORT/VIEW/COMMENT
处理对象类型 SCHEMA_EXPORT/TABLE/CONSTRAINT/REF_CONSTRAINT
处理对象类型 SCHEMA_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
作业 "LHR"."SYS_IMPORT_FULL_01" 已经完成, 但是有 25 个错误 (于 15:59:01 完成)
[oracle@rhel6_lhr ~]$ ORACLE_SID=ora11g
[oracle@rhel6_lhr ~]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.3.0 Production on 星期二 5月 19 15:45:48 2015
Copyright (c) 1982, 2011, Oracle. All rights reserved.
已连接到空闲例程。
15:45:48 SQL> startup
ORACLE 例程已经启动。
Total System Global Area 409194496 bytes
Fixed Size 2228864 bytes
Variable Size 301993344 bytes
Database Buffers 96468992 bytes
Redo Buffers 8503296 bytes
数据库装载完毕。
数据库已经打开。
15:46:24 SQL> select name from v$datafile;
NAME
/u01/app/oracle/oradata/ora11g/system01.dbf
/u01/app/oracle/oradata/ora11g/sysaux01.dbf
/u01/app/oracle/oradata/ora11g/undotbs01.dbf
/u01/app/oracle/oradata/ora11g/users01.dbf
/u01/app/oracle/oradata/ora11g/example01.dbf
/u01/app/oracle/oradata/ora11g/aa.dbf
已选择6行。
已用时间: 00: 00: 00.00
15:47:13 SQL> create tablespace DWII_CNY_BK_F_01 datafile '/u01/app/oracle/oradata/ora11g/DWII_CNY_BK_F_01.dbf' size 10M;
create tablespace DWII_DPA_F_01 datafile '/u01/app/oracle/oradata/ora11g/DWII_DPA_F_01.dbf' size 10M;
create tablespace DWII_DPA_I_01 datafile '/u01/app/oracle/oradata/ora11g/DWII_DPA_I_01.dbf' size 10M;
create tablespace DWII_DPA_S_01 datafile '/u01/app/oracle/oradata/ora11g/DWII_DPA_S_01.dbf' size 10M;
create tablespace DWII_SOR_F_01 datafile '/u01/app/oracle/oradata/ora11g/DWII_SOR_F_01.dbf' size 10M;
create tablespace DWII_SOR_I_01 datafile '/u01/app/oracle/oradata/ora11g/DWII_SOR_I_01.dbf' size 10M;
create tablespace DW_USER datafile '/u01/app/oracle/oradata/ora11g/DW_USER.dbf' size 10M;
create tablespace SQCHECK datafile '/u01/app/oracle/oradata/ora11g/SQCHECK.dbf' size 10M;
create tablespace SD_CNY_D_01 datafile '/u01/app/oracle/oradata/ora11g/SD_CNY_D_01.dbf' size 10M;
create tablespace SD_CNY_F_01 datafile '/u01/app/oracle/oradata/ora11g/SD_CNY_F_01.dbf' size 10M;
create tablespace SD_DPA_D_01 datafile '/u01/app/oracle/oradata/ora11g/SD_DPA_D_01.dbf' size 10M;
create tablespace SD_DPA_F_01 datafile '/u01/app/oracle/oradata/ora11g/SD_DPA_F_01.dbf' size 10M;
create tablespace SD_SORT_T_01 datafile '/u01/app/oracle/oradata/ora11g/SD_SORT_T_01.dbf' size 10M;
create tablespace DWII_FXDM_F_01 datafile '/u01/app/oracle/oradata/ora11g/DWII_FXDM_F_01.dbf' size 10M;
表空间已创建。
已用时间: 00: 00: 01.01
15:49:42 SQL> create tablespace SD_SOR_T_01 datafile '/u01/app/oracle/oradata/ora11g/SD_SOR_T_01.dbf' size 10M;
表空间已创建。
已用时间: 00: 00: 00.60
15:49:42 SQL>
表空间已创建。
已用时间: 00: 00: 00.45
15:49:43 SQL>
表空间已创建。
已用时间: 00: 00: 00.35
15:49:43 SQL>
表空间已创建。
已用时间: 00: 00: 00.47
15:49:44 SQL>
表空间已创建。
已用时间: 00: 00: 00.62
15:49:44 SQL>
表空间已创建。
已用时间: 00: 00: 00.55
15:49:45 SQL>
表空间已创建。
已用时间: 00: 00: 00.61
15:49:45 SQL>
表空间已创建。
已用时间: 00: 00: 01.76
15:49:47 SQL>
表空间已创建。
已用时间: 00: 00: 00.59
15:49:48 SQL>
表空间已创建。
已用时间: 00: 00: 00.66
15:49:48 SQL>
表空间已创建。
已用时间: 00: 00: 00.60
15:49:49 SQL>
表空间已创建。
已用时间: 00: 00: 00.51
15:49:50 SQL>
表空间已创建。
已用时间: 00: 00: 00.49
15:49:50 SQL>
表空间已创建。
已用时间: 00: 00: 00.59
15:49:51 SQL>
15:49:59 SQL>
15:50:00 SQL>
15:50:00 SQL> show parameter DEFERRED_SEGMENT_CREATION
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
deferred_segment_creation boolean TRUE
15:55:06 SQL> SET TERMOUT OFF;
16:04:10 SQL> COLUMN current_instance NEW_VALUE current_instance NOPRINT;
16:04:10 SQL> SELECT rpad(instance_name, 17) current_instance FROM v$instance;
已用时间: 00: 00: 00.00
16:04:10 SQL> SET TERMOUT ON;
16:04:10 SQL>
16:04:10 SQL> PROMPT
16:04:10 SQL> PROMPT +------------------------------------------------------------------------+
+------------------------------------------------------------------------+
16:04:10 SQL> PROMPT | Report : Tablespaces |
| Report : Tablespaces |
16:04:10 SQL> PROMPT | Instance : ¤t_instance |
| Instance : ora11g |
16:04:11 SQL> PROMPT +------------------------------------------------------------------------+
+------------------------------------------------------------------------+
16:04:11 SQL>
16:04:11 SQL> SET ECHO OFF
16:04:11 SQL> SET FEEDBACK 6
16:04:11 SQL> SET HEADING ON
16:04:11 SQL> SET LINESIZE 180
16:04:11 SQL> SET PAGESIZE 50000
16:04:11 SQL> SET TERMOUT ON
16:04:11 SQL> SET TIMING OFF
16:04:11 SQL> SET TRIMOUT ON
16:04:11 SQL> SET TRIMSPOOL ON
16:04:11 SQL> SET VERIFY OFF
16:04:11 SQL>
16:04:11 SQL> CLEAR COLUMNS
columns 已清除
16:04:11 SQL> CLEAR BREAKS
breaks 已清除
16:04:11 SQL> CLEAR COMPUTES
computes 已清除
16:04:11 SQL>
16:04:11 SQL> COLUMN status FORMAT a9 HEADING 'Status'
16:04:11 SQL> COLUMN name FORMAT a30 HEADING 'Tablespace Name'
16:04:11 SQL> COLUMN type FORMAT a15 HEADING 'TS Type'
16:04:11 SQL> COLUMN extent_mgt FORMAT a11 HEADING 'Extent Mgt.'
16:04:11 SQL> COLUMN ts_size FORMAT 9,999,999,999,999 HEADING 'Tablespace Size'
16:04:11 SQL> COLUMN used FORMAT 9,999,999,999,999 HEADING 'Used (in bytes)'
16:04:11 SQL> COLUMN free FORMAT 9,999,999,999,999 HEADING 'Free (in bytes)'
16:04:11 SQL> COLUMN pct_used FORMAT 999 HEADING 'Pct. Used'
16:04:11 SQL>
16:04:11 SQL> BREAK ON report
16:04:11 SQL>
16:04:11 SQL> COMPUTE sum OF ts_size ON report
16:04:11 SQL> COMPUTE sum OF used ON report
16:04:11 SQL> COMPUTE sum OF free ON report
16:04:11 SQL> COMPUTE avg OF pct_used ON report
16:04:11 SQL>
16:04:11 SQL> SELECT
16:04:11 2 d.status status
16:04:11 3 , d.tablespace_name name
16:04:11 4 , d.contents type
16:04:11 5 , d.extent_management extent_mgt
16:04:11 6 , NVL(a.bytes, 0) ts_size
16:04:11 7 , NVL(a.bytes - NVL(f.bytes, 0), 0) used
16:04:11 8 , NVL(f.bytes, 0) free
16:04:11 9 , NVL((a.bytes - NVL(f.bytes, 0)) / a.bytes * 100, 0) pct_used
16:04:11 10 FROM
16:04:11 11 sys.dba_tablespaces d
16:04:11 12 , ( select tablespace_name, sum(bytes) bytes
16:04:11 13 from dba_data_files
16:04:11 14 group by tablespace_name
16:04:11 15 ) a
16:04:11 16 , ( select tablespace_name, sum(bytes) bytes
16:04:11 17 from dba_free_space
16:04:11 18 group by tablespace_name
16:04:11 19 ) f
16:04:11 20 WHERE
16:04:11 21 d.tablespace_name = a.tablespace_name(+)
16:04:11 22 AND d.tablespace_name = f.tablespace_name(+)
16:04:11 23 AND NOT (
16:04:11 24 d.extent_management like 'LOCAL'
16:04:11 25 AND
16:04:11 26 d.contents like 'TEMPORARY'
16:04:11 27 )
16:04:11 28 UNION ALL
16:04:11 29 SELECT
16:04:11 30 d.status status
16:04:11 31 , d.tablespace_name name
16:04:12 32 , d.contents type
16:04:12 33 , d.extent_management extent_mg
16:04:12 34 , NVL(a.bytes, 0) ts_size
16:04:12 35 , NVL(t.bytes, 0) used
16:04:12 36 , NVL(a.bytes - NVL(t.bytes,0), 0) free
16:04:12 37 , NVL(t.bytes / a.bytes * 100, 0) pct_used
16:04:12 38 FROM
16:04:12 39 sys.dba_tablespaces d
16:04:12 40 , ( select tablespace_name, sum(bytes) bytes
16:04:12 41 from dba_temp_files
16:04:12 42 group by tablespace_name
16:04:12 43 ) a
16:04:12 44 , ( select tablespace_name, sum(bytes_cached) bytes
16:04:12 45 from v$temp_extent_pool
16:04:12 46 group by tablespace_name
16:04:12 47 ) t
16:04:12 48 WHERE
16:04:12 49 d.tablespace_name = a.tablespace_name(+)
16:04:12 50 AND d.tablespace_name = t.tablespace_name(+)
16:04:12 51 AND d.extent_management like 'LOCAL'
16:04:12 52 AND d.contents like 'TEMPORARY'
16:04:12 53 /
Status Tablespace Name TS Type Extent Mgt. Tablespace Size Used (in bytes) Free (in bytes) Pct. Used
--------- ------------------------------ --------------- ----------- ------------------ ------------------ ------------------ ---------
ONLINE AA PERMANENT LOCAL 5,242,880 1,114,112 4,128,768 21
ONLINE DWII_DPA_S_01 PERMANENT LOCAL 10,485,760 1,048,576 9,437,184 10
ONLINE SD_DPA_F_01 PERMANENT LOCAL 10,485,760 1,048,576 9,437,184 10
ONLINE SYSAUX PERMANENT LOCAL 587,202,560 562,298,880 24,903,680 96
ONLINE DW_USER PERMANENT LOCAL 10,485,760 1,048,576 9,437,184 10
ONLINE SD_CNY_D_01 PERMANENT LOCAL 10,485,760 1,048,576 9,437,184 10
ONLINE SD_DPA_D_01 PERMANENT LOCAL 10,485,760 1,048,576 9,437,184 10
ONLINE USERS PERMANENT LOCAL 100,925,440 13,697,024 87,228,416 14
ONLINE DWII_CNY_BK_F_01 PERMANENT LOCAL 10,485,760 1,048,576 9,437,184 10
ONLINE DWII_SOR_I_01 PERMANENT LOCAL 10,485,760 1,048,576 9,437,184 10
ONLINE SYSTEM PERMANENT LOCAL 807,403,520 803,733,504 3,670,016 100
ONLINE EXAMPLE PERMANENT LOCAL 362,414,080 325,189,632 37,224,448 90
ONLINE DWII_SOR_F_01 PERMANENT LOCAL 10,485,760 1,048,576 9,437,184 10
ONLINE SQCHECK PERMANENT LOCAL 10,485,760 1,048,576 9,437,184 10
ONLINE SD_SORT_T_01 PERMANENT LOCAL 10,485,760 1,048,576 9,437,184 10
ONLINE SD_SOR_T_01 PERMANENT LOCAL 10,485,760 1,048,576 9,437,184 10
ONLINE DWII_DPA_I_01 PERMANENT LOCAL 10,485,760 1,048,576 9,437,184 10
ONLINE SD_CNY_F_01 PERMANENT LOCAL 10,485,760 1,048,576 9,437,184 10
ONLINE DWII_FXDM_F_01 PERMANENT LOCAL 10,485,760 1,048,576 9,437,184 10
ONLINE DWII_DPA_F_01 PERMANENT LOCAL 10,485,760 1,048,576 9,437,184 10
ONLINE UNDOTBS1 UNDO LOCAL 298,844,160 298,844,160 0 100
ONLINE TEMP TEMPORARY LOCAL 87,031,808 85,983,232 1,048,576 99
------------------ ------------------ ------------------ ---------
avg 30
sum 2,406,350,848 2,106,589,184 299,761,664
已选择22行。
16:04:12 SQL>
这里尤其指出的是在 11.2.0.2以上有个新增的参数，SEGMENT_CREATION，如果设置其为n的话，ddl语句就不包含SEGMENT CREATION IMMEDIATE字段。如下：
。。。。
"ISSUE_TYPE" NUMBER(6,0) DEFAULT 0,
"CSTDTN_BANK_ID" NUMBER(6,0)
) SEGMENT CREATION IMMEDIATE
PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255
NOCOMPRESS LOGGING
。。。。。。。
。。。。。。。
"ISSUE_TYPE" NUMBER(6,0) DEFAULT 0,
"CSTDTN_BANK_ID" NUMBER(6,0)
) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255
NOCOMPRESS LOGGING
STORAGE(INITIAL 3145728 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
。。。。。。。
官网地址：
http://docs.oracle.com/cd/E11882_01/server.112/e22490/dp_import.htm#SUTIL300
TRANSFORM
Default: There is no default
Purpose
Enables you to alter object creation DDL for objects being imported.
Syntax and Description
TRANSFORM = transform_name:value[:object_type]
The transform_name specifies the name of the transform. The possible options are as follows:
-
SEGMENT_ATTRIBUTES - If the value is specified as y, then segment attributes (physical attributes, storage attributes, tablespaces, and logging) are included, with appropriate DDL. The default is y.
-
STORAGE - If the value is specified as y, then the storage clauses are included, with appropriate DDL. The default is y. This parameter is ignored ifSEGMENT_ATTRIBUTES=n.
-
OID - If the value is specified as n, then the assignment of the exported OID during the creation of object tables and types is inhibited. Instead, a new OID is assigned. This can be useful for cloning schemas, but does not affect referenced objects. The default value is y.
-
PCTSPACE - The value supplied for this transform must be a number greater than zero. It represents the percentage multiplier used to alter extent allocations and the size of data files.
Note that you can use the PCTSPACE transform with the Data Pump Export SAMPLE parameter so that the size of storage allocations matches the sampled data subset. (See "SAMPLE".)
-
SEGMENT_CREATION - If set to y (the default), then this transform causes the SQL SEGMENT CREATION clause to be added to the CREATE TABLE statement. That is, the CREATE TABLE statement will explicitly say either SEGMENT CREATION DEFERRED or SEGMENT CREATION IMMEDIATE. If the value is n, then the SEGMENT CREATION clause is omitted from the CREATE TABLE statement. Set this parameter to n to use the default segment creation attributes for the table(s) being loaded. (This functionality is available starting with Oracle Database 11g release 2 (11.2.0.2).)
The type of value specified depends on the transform used. Boolean values (y/n) are required for the SEGMENT_ATTRIBUTES, STORAGE, and OID transforms. Integer values are required for the PCTSPACE transform.
The object_type is optional. If supplied, it designates the object type to which the transform will be applied. If no object type is specified, then the transform applies to all valid object types. The valid object types for each transform are shown in Table 3-1.
Table 3-1 Valid Object Types For the Data Pump Import TRANSFORM Parameter
| |
SEGMENT_ATTRIBUTES | STORAGE | OID | PCTSPACE | SEGMENT_CREATION |
|---|---|---|---|---|---|
| CLUSTER |
X |
X |
X |
||
| CONSTRAINT |
X |
X |
X |
||
| INC_TYPE |
X |
||||
| INDEX |
X |
X |
X |
||
| ROLLBACK_SEGMENT |
X |
X |
X |
||
| TABLE |
X |
X |
X |
X |
X |
| TABLESPACE |
X |
X |
|||
| TYPE |
X |
Example
For the following example, assume that you have exported the employees table in the hr schema. The SQL CREATE TABLE statement that results when you then import the table is similar to the following:
CREATE TABLE "HR"."EMPLOYEES"
( "EMPLOYEE_ID" NUMBER(6,0),
"FIRST_NAME" VARCHAR2(20),
"LAST_NAME" VARCHAR2(25) CONSTRAINT "EMP_LAST_NAME_NN" NOT NULL ENABLE,
"EMAIL" VARCHAR2(25) CONSTRAINT "EMP_EMAIL_NN" NOT NULL ENABLE,
"PHONE_NUMBER" VARCHAR2(20),
"HIRE_DATE" DATE CONSTRAINT "EMP_HIRE_DATE_NN" NOT NULL ENABLE,
"JOB_ID" VARCHAR2(10) CONSTRAINT "EMP_JOB_NN" NOT NULL ENABLE,
"SALARY" NUMBER(8,2),
"COMMISSION_PCT" NUMBER(2,2),
"MANAGER_ID" NUMBER(6,0),
"DEPARTMENT_ID" NUMBER(4,0)
) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
STORAGE(INITIAL 10240 NEXT 16384 MINEXTENTS 1 MAXEXTENTS 121
PCTINCREASE 50 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
TABLESPACE "SYSTEM" ;
If you do not want to retain the STORAGE clause or TABLESPACE clause, then you can remove them from the CREATE STATEMENT by using the Import TRANSFORMparameter. Specify the value of SEGMENT_ATTRIBUTES as n. This results in the exclusion of segment attributes (both storage and tablespace) from the table.
> impdp hr TABLES=hr.employees DIRECTORY=dpump_dir1 DUMPFILE=hr_emp.dmp TRANSFORM=SEGMENT_ATTRIBUTES:n:table
The resulting CREATE TABLE statement for the employees table would then look similar to the following. It does not contain a STORAGE or TABLESPACE clause; the attributes for the default tablespace for the HR schema will be used instead.
CREATE TABLE "HR"."EMPLOYEES"
( "EMPLOYEE_ID" NUMBER(6,0),
"FIRST_NAME" VARCHAR2(20),
"LAST_NAME" VARCHAR2(25) CONSTRAINT "EMP_LAST_NAME_NN" NOT NULL ENABLE,
"EMAIL" VARCHAR2(25) CONSTRAINT "EMP_EMAIL_NN" NOT NULL ENABLE,
"PHONE_NUMBER" VARCHAR2(20),
"HIRE_DATE" DATE CONSTRAINT "EMP_HIRE_DATE_NN" NOT NULL ENABLE,
"JOB_ID" VARCHAR2(10) CONSTRAINT "EMP_JOB_NN" NOT NULL ENABLE,
"SALARY" NUMBER(8,2),
"COMMISSION_PCT" NUMBER(2,2),
"MANAGER_ID" NUMBER(6,0),
"DEPARTMENT_ID" NUMBER(4,0)
);
As shown in the previous example, the SEGMENT_ATTRIBUTES transform applies to both storage and tablespace attributes. To omit only the STORAGE clause and retain the TABLESPACE clause, you can use the STORAGE transform, as follows:
> impdp hr TABLES=hr.employees DIRECTORY=dpump_dir1 DUMPFILE=hr_emp.dmp TRANSFORM=STORAGE:n:table
The SEGMENT_ATTRIBUTES and STORAGE transforms can be applied to all applicable table and index objects by not specifying the object type on the TRANSFORMparameter, as shown in the following command:
> impdp hr DIRECTORY=dpump_dir1 DUMPFILE=hr.dmp SCHEMAS=hr TRANSFORM=SEGMENT_ATTRIBUTES:n
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本文作者：小麦苗，只专注于数据库的技术，更注重技术的运用
ITPUB BLOG：http://blog.itpub.net/26736162
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创作时间地点：2015-05-19 09:00~ 2015-05-19 11:20 于外汇交易中心
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