Commands for dump files include exp/IMP and expdp/impdp. These four commands have been compiled in related articles.
Oracle exp/IMP description
Http://blog.csdn.net/tianlesoftware/article/details/4718366
Comparison between exp/IMP and expdp/impdp and some optimization items in use
Http://blog.csdn.net/tianlesoftware/article/details/6093973
Oracle expdp/impdp example
Http://blog.csdn.net/tianlesoftware/article/details/6260138
Oracle 10g Data Pump expdp/impdp
Http://blog.csdn.net/tianlesoftware/article/details/4674224
Example of Oracle expdp/impdp from high version to low version
Http://blog.csdn.net/tianlesoftware/article/details/6533421
For dump files, we cannot extract data directly, but we can extract the corresponding DDL statements from the dump file through relevant parameters.
(1) If it is an Export Import (exp/IMP), it is the indexfile parameter.
(2) if it is a data pump (expdp/impdp), it is the sqlfile parameter.
Preparations:
Sys @ anqing1 (Rac1)> create user dvdidentified by DVD;
User Created.
Sys @ anqing1 (Rac1)> grant DBA to DVD;
Grant succeeded.
Sys @ anqing1 (Rac1)> conn DVD/DVD;
Connected.
DVD @ anqing1 (Rac1)> Create Table T1 (idnumber );
Table created.
DVD @ anqing1 (Rac1)> insert into t1values (1 );
1 row created.
DVD @ anqing1 (Rac1)> commit;
Commit complete.
DVD @ anqing1 (Rac1)> Create index idx_t1on T1 (ID );
Index created.
DVD @ anqing1 (Rac1)>
1. Use the Export Import command
1.1 export the data of a DVD user and generate a dump file
[Oracle @ Rac1 ~] $ Exp DVD/DVD file = DVD. dmpowner = DVD
Export: Release 10.2.0.4.0-production onwed Sep 21 19:50:14 2011
Copyright (c) 1982,200 7, Oracle. All rights reserved.
Connected to: Oracle Database 10 genterprise Edition Release 10.2.0.4.0-Production
With the partitioning, real applicationters ters, OLAP, Data Mining
And real application testing options
Export done in us7ascii Character Set andal16utf16 nchar Character Set
Server uses zhs16gbk character set (possible charset conversion)
About to export specified users...
. Exporting pre-schema procedural objectsand actions
. Exporting foreign function library namesfor user DVD
. Exporting public type Synonyms
. Exporting private type Synonyms
. Exporting Object Type Definitions foruser DVD
About to export DVD's objects...
. Exporting database links
. Exporting sequence numbers
. Exporting cluster Definitions
. About to export DVD's tables via conventionalpath...
.. Exporting table T1 1 rows exported
EXP-00091: Exporting questionablestatistics.
. Exporting Synonyms
. Exporting views
. Exporting stored procedures
. Exporting Operators
. Exporting referential integrityconstraints
. Exporting triggers
. Exporting indextypes
. Exporting bitmap, functional andextensible Indexes
. Exporting posttables actions
. Exporting materialized views
. Exporting snapshot logs
. Exporting Job Queues
. Exporting refresh groups and children
. Exporting dimensions
. Exporting post-schema procedural objectsand actions
. Exporting statistics
Export terminated successfully withwarnings.
1.2 extract DDL statements from the dump file
[Oracle @ Rac1 ~] $ Imp DVD/DVD file = DVD. dmpfromuser = DVD touser = DVD indexfile = DVD. SQL
Import: Release 10.2.0.4.0-production onwed Sep 21 19:50:50 2011
Copyright (c) 1982,200 7, Oracle. All rights reserved.
Connected to: Oracle Database 10 genterprise Edition Release 10.2.0.4.0-Production
With the partitioning, real applicationters ters, OLAP, Data Mining
And real application testing options
Export File Created by export: v10.02.01 viaconventional path
Import done in us7ascii Character Set andal16utf16 nchar Character Set
Import server uses zhs16gbk character set (possiblecharset conversion)
.. Skipping table "T1"
Import terminated successfully withoutwarnings.
Note the following two points:
(1) The import command does not actually import data, but only generates all the ddl SQL statements for the corresponding user.
(2) The DDL statements of the table are annotated with REM.
[Oracle @ Rac1 ~] $ Cat DVD. SQL
Rem create table "DVD". "T1" ("ID" Number) pctfree 10 pctused 40 initrans
Rem 1 maxtrans 255 storage (initial 65536 freelists 1 freelist groups 1
Rem buffer_pool default) tablespace "users" logging nocompress;
Rem... 1 rows
Connect DVD;
Create Index "DVD". "idx_t1" on "T1" ("ID") pctfree 10 initrans 2 maxtrans
255 storage (initial 65536 freelists 1 freelist groups 1 buffer_pool
Default) tablespace "users" logging;
If you only want to view the index DDL, you can use the grep command to say that REM is not displayed.
Linux grep command description
Http://blog.csdn.net/tianlesoftware/article/details/6277193
[Oracle @ Rac1 ~] $ Cat DVD. SQL | grep-V Rem
Connect DVD;
Create Index "DVD". "idx_t1" on "T1" ("ID") pctfree10 initrans 2 maxtrans
255 storage (initial 65536 freelists 1 freelist groups 1 buffer_pool
Default) tablespace "users" logging;
Ii. Data Pump (expdp/impdp)
2.1 export data of a DVD user
[Oracle @ Rac1 ~] $ Expdp DVD/dvddirectory = backup dumpfile = DVD. dmp schemas = DVD
Export: Release 10.2.0.4.0-production onwednesday, 21 September, 2011 20:16:59
Copyright (c) 2003,200 7, Oracle. All rights reserved.
Connected to: Oracle Database 10 genterprise Edition Release 10.2.0.4.0-Production
With the partitioning, real applicationters ters, OLAP, Data Mining
And real application testing options
Flashback automatically enabled to preservedatabase integrity.
Starting "DVD". "sys_export_schema_01": DVD/******** directory = backupdumpfile = DVD. dmp schemas = DVD
Estimate in progress using blocks method...
Processing object typeschema_export/table/table_data
Total estimation using blocks method: 64 KB
Processing object type schema_export/user
Processing object typeschema_export/system_grant
Processing object typeschema_export/role_grant
Processing object typeschema_export/default_role
Processing object typeschema_export/pre_schema/procact_schema
Processing object type schema_export/table
Processing object typeschema_export/table/index/Index
Processing object typeschema_export/table/constraint/Constraint
Processing object typeschema_export/table/index/statistics/index_statistics
Processing object type schema_export/table/comment
.. Exported "DVD". "T1" 4.906 kb 1 rows
Master table "DVD". "sys_export_schema_01" successfully Loaded/unloaded
**************************************** **************************************
Dump File set for DVD. sys_export_schema_01is:
/U01/backup/DVD. dmp
Job "DVD". "sys_export_schema_01" successfully completed at20: 17: 34
2.2 DDL generation
[Oracle @ Rac1 ~] $ Impdp DVD/dvddirectory = backup dumpfile = DVD. dmp sqlfile = DVD. SQL
Import: Release 10.2.0.4.0-production onwednesday, 21 September, 2011 20:18:50
Copyright (c) 2003,200 7, Oracle. All rights reserved.
Connected to: Oracle Database 10 genterprise Edition Release 10.2.0.4.0-Production
With the partitioning, real applicationters ters, OLAP, Data Mining
And real application testing options
Master table "DVD". "sys_ SQL _file_full_01" successfully Loaded/unloaded
Starting "DVD". "sys_ SQL _file_full_01": DVD/********* directory = backupdumpfile = DVD. dmp sqlfile = DVD. SQL
Processing object type schema_export/user
Processing object typeschema_export/system_grant
Processing object typeschema_export/role_grant
Processing object typeschema_export/default_role
Processing object typeschema_export/pre_schema/procact_schema
Processing object typeschema_export/table
Processing object typeschema_export/table/index/Index
Processing object typeschema_export/table/index/statistics/index_statistics
Job "DVD". "sys_ SQL _file_full_01" successfully completed at20: 18: 54
2.3 view DDL text
[Oracle @ Rac1 backup] $ cat DVD. SQL
-- Connect DVD
-- New object type path is: schema_export/user
-- Connect System
Create user "DVD" identified byvalues '1111602792579cce'
Default tablespace "users"
Temporary tablespace "Temp ";
-- New object type path is: schema_export/system_grant
Grant unlimited tablespace to "DVD ";
-- New object type path is: schema_export/role_grant
Grant "dba" to "DVD ";
-- New object type path is: schema_export/default_role
Alter user "DVD" default role all;
-- New object type path is: schema_export/pre_schema/procact_schema
-- Connect DVD
Begin
SYS. dbms_logrep_imp.instantiate_schema (Schema_name => sys_context ('userenv', 'current _ scheme'), export_db_name => 'anqing. regress. RDBMS. dev. us. oracle. com ', inst_scn => '123 ');
Commit;
End;
/
-- New object type path is: schema_export/table
Create Table "DVD". "T1"
("ID" Number
) Pctfree 10 pctused 40 initrans 1 maxtrans 255 nocompress Logging
Storage (initial 65536 next 1048576 minextents 1 maxextents 2147483645
Pctincrease 0 freelists 1 freelist groups 1 buffer_pool default)
Tablespace "users ";
-- New object type path is: schema_export/table/index/Index
Create Index "DVD". "idx_t1" on "DVD". "T1" ("ID ")
Pctfree 10 initrans 2 maxtrans 255
Storage (initial 65536 next 1048576 minextents 1 maxextents 2147483645
Pctincrease 0 freelists 1 freelist groups 1 buffer_pool default)
Tablespace "users" parallel 1;
Alter Index "DVD". "idx_t1" noparallel;
-- New object type path is: schema_export/table/index/statistics/index_statistics
Declare ind_name varchar2 (60 );
Ind_owner varchar2 (60 );
Begin
Delete from "sys". "impdp_stats ";
Ind_name: = 'idx _ t1'; ind_owner: = 'dvd ';
Insert into "sys". "impdp_stats" (type, version, flags, C1, C2, C3, C5,
N1, N2, N3, N4, N5, N6, N7, n8, records, N10, N11, n12, D1)
Values ('I', 4, 0, ind_name, null, null, 'dvd', 1, 1, 1, 1, 1, 1, 0, 1, null, null, null, null, to_date ('2017-09-21 19:45:20 ', 'yyyy-MM-DD: hh24: MI: ss '));
Dbms_stats.import_index_stats ('"' | ind_owner | '"', '"' | ind_name | '"', null, '"impdp_stats"', null, '"sys "');
Delete from "sys". "impdp_stats ";
End;
/
Compare the DDL results of exp/imp with expdp/impdp. expdp/impdp extracts DDL statements in more detail and has better readability.
Bytes -------------------------------------------------------------------------------------------------------
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Email: dvd.dba@gmail.com
Dba1 group: 62697716 (full); dba2 group: 62697977 (full) dba3 group: 62697850 (full)
Super DBA group: 63306533 (full); dba4 group: 83829929 (full) dba5 group: 142216823 (full)
Dba6 group: 158654907 (full) dba7 group: 69087192 (full) dba8 group: 172855474
DBA super group 2: 151508914 dba9 group: 102954821 chat group: 40132017 (full)
-- Add the group to describe the relationship between Oracle tablespace and data files in the remarks section. Otherwise, the application is rejected.