dg备库怎么逻辑导出exp/expdp?

以下技能在备库部署ogg初始化时可用到。

exp可直接执行:

exp jyc/jyc@pdbdgorcl buffer=409600000 file=dg_jyc.dmp log=dg_jyc.log owner=jyc

[oracle@dgrac2 ~]$ exp jyc/jyc@pdbdgorcl buffer=409600000 file=dg_jyc.dmp log=dg_jyc.log owner=jyc

Export: Release 19.0.0.0.0 - Production on Wed Feb 16 09:52:56 2022
Version 19.5.0.0.0

Connected to: Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.5.0.0.0
Export done in ZHS16GBK character set and AL16UTF16 NCHAR character set

About to export specified users ...
. exporting pre-schema procedural objects and actions
. exporting foreign function library names for user JYC
. exporting PUBLIC type synonyms
. exporting private type synonyms
. exporting object type definitions for user JYC
About to export JYC's objects ...
. exporting database links
. exporting sequence numbers
. exporting cluster definitions
. about to export JYC's tables via Conventional Path ...
. . exporting table TEST 2 rows exported
. exporting synonyms
. exporting views
. exporting stored procedures
. exporting operators
. exporting referential integrity constraints
. exporting triggers
. exporting indextypes
. exporting bitmap, functional and extensible indexes
. exporting posttables actions
. exporting materialized views
. exporting snapshot logs
. exporting job queues
. exporting refresh groups and children
. exporting dimensions
. exporting post-schema procedural objects and actions
. exporting statistics
Export terminated successfully without warnings.

expdp需通过主库或其它库的network_link方式导出

expdp jyc/jyc@pdborcl network_link=expdp_primary directory=dmp schemas=JYC dumpfile=dg_jyc.dmp logfile=dg_jyc.log cluster=n exclude=statistics

备库操作报错如下：

[oracle@dgrac1 trace]$ expdp jyc/jyc@pdbdgorcl directory=dmp schemas=JYC dumpfile=dg_jyc.dmp logfile=dg_jyc.log cluster=n exclude=statistics

Export: Release 19.0.0.0.0 - Production on Wed Feb 16 09:42:03 2022
Version 19.5.0.0.0

Connected to: Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
ORA-31626: job does not exist
ORA-31633: unable to create master table "JYC.SYS_EXPORT_SCHEMA_05"
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95
ORA-06512: at "SYS.KUPV$FT", line 1163
ORA-16000: database or pluggable database open for read-only access
ORA-06512: at "SYS.KUPV$FT", line 1056
ORA-06512: at "SYS.KUPV$FT", line 1044

主库操作：（主备库先创建好dmp目录）

[oracle@rac1 ~]$ sqlplus jyc/jyc@pdborcl

SQL*Plus: Release 19.0.0.0.0 - Production on Wed Feb 16 09:32:25 2022
Version 19.5.0.0.0

Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.5.0.0.0

SQL> select table_name from user_tables;

no rows selected

SQL> create table test (id int);

Table created.

SQL> insert into test values(1);

1 row created.

SQL> insert into test values(2);

1 row created.

SQL> commit;

Commit complete.

SQL> set line 130
SQL> set wrap off
SQL> col DIRECTORY_NAME for a30
SQL> select * from dba_directories;
rows will be truncated

OWNER DIRECTORY_NAME DIRECTORY_PATH
----- ------------------------------ ---------------------------------------------------------------------------------------------
SYS SDO_DIR_WORK
SYS SDO_DIR_ADMIN /oracle/app/oracle/product/19c/dbhome_1/md/admin
SYS XMLDIR /oracle/app/oracle/product/19c/dbhome_1/rdbms/xml
SYS XSDDIR /oracle/app/oracle/product/19c/dbhome_1/rdbms/xml/schema
SYS OPATCH_INST_DIR /oracle/app/oracle/product/19c/dbhome_1/OPatch
SYS ORACLE_OCM_CONFIG_DIR2 /oracle/app/oracle/product/19c/dbhome_1/ccr/state
SYS ORACLE_BASE /oracle/app/oracle
SYS ORACLE_HOME /oracle/app/oracle/product/19c/dbhome_1
SYS ORACLE_OCM_CONFIG_DIR /oracle/app/oracle/product/19c/dbhome_1/ccr/state
SYS DATA_PUMP_DIR /oracle/app/oracle/product/19c/dbhome_1/rdbms/log/A0044C1C44692EE6E0539634A8C0A37C
SYS DBMS_OPTIM_LOGDIR /oracle/app/oracle/product/19c/dbhome_1/cfgtoollogs

15 rows selected.

SQL> !mkdir -p /oracle/app/oracle/dmp

SQL> create directory dmp as '/oracle/app/oracle/dmp';
grant read,write on directory dmp to public;

Directory created.

SQL>
Grant succeeded.

此处开始备库操作：先取消同步，这样备库数据不变情况下导出对比主库新增记录的情况：

[oracle@dgrac1 trace]$ dgmgrl sys/oracle@dgorcl
DGMGRL for Linux: Release 19.0.0.0.0 - Production on Wed Feb 16 09:43:20 2022
Version 19.5.0.0.0

Welcome to DGMGRL, type "help" for information.
Connected to "dgorcl"
Connected as SYSDBA.

DGMGRL> show CONFIGURATION;

Configuration - adg

Protection Mode: MaxPerformance
Members:
orcl - Primary database
dgorcl - Physical standby database

Fast-Start Failover: Disabled

Configuration Status:
SUCCESS (status updated 11 seconds ago)

DGMGRL> show database verbose dgorcl

Database - dgorcl

Role: PHYSICAL STANDBY
Intended State: APPLY-ON
Transport Lag: 0 seconds (computed 0 seconds ago)
Apply Lag: 0 seconds (computed 0 seconds ago)
Average Apply Rate: 42.00 KByte/s
Active Apply Rate: 1.45 MByte/s
Maximum Apply Rate: 1.63 MByte/s
Real Time Query: ON
Instance(s):
orcl1
orcl2 (apply instance)

Properties:
DGConnectIdentifier = 'dgorcl'
ObserverConnectIdentifier = ''
FastStartFailoverTarget = ''
PreferredObserverHosts = ''
LogShipping = 'ON'
RedoRoutes = ''
LogXptMode = 'ASYNC'
DelayMins = '0'
Binding = 'optional'
MaxFailure = '0'
ReopenSecs = '300'
NetTimeout = '30'
RedoCompression = 'DISABLE'
PreferredApplyInstance = ''
ApplyInstanceTimeout = '0'
ApplyLagThreshold = '30'
TransportLagThreshold = '30'
TransportDisconnectedThreshold = '30'
ApplyParallel = 'AUTO'
ApplyInstances = '0'
StandbyFileManagement = ''
ArchiveLagTarget = '0'
LogArchiveMaxProcesses = '0'
LogArchiveMinSucceedDest = '0'
DataGuardSyncLatency = '0'
LogArchiveTrace = '0'
LogArchiveFormat = ''
DbFileNameConvert = ''
LogFileNameConvert = ''
ArchiveLocation = ''
AlternateLocation = ''
StandbyArchiveLocation = ''
StandbyAlternateLocation = ''
InconsistentProperties = '(monitor)'
InconsistentLogXptProps = '(monitor)'
LogXptStatus = '(monitor)'
SendQEntries = '(monitor)'
RecvQEntries = '(monitor)'
HostName(*)
StaticConnectIdentifier(*)
TopWaitEvents(*)
SidName(*)
(*) - Please check specific instance for the property value

Log file locations(*):
(*) - Check specific instance for log file locations.

Database Status:
SUCCESS

DGMGRL> edit database 'dgorcl' set state='apply-off';
Succeeded.
DGMGRL> show database verbose dgorcl

Database - dgorcl

Role: PHYSICAL STANDBY
Intended State: APPLY-OFF
Transport Lag: 0 seconds (computed 1 second ago)
Apply Lag: 12 seconds (computed 1 second ago)
Average Apply Rate: (unknown)
Active Apply Rate: (unknown)
Maximum Apply Rate: (unknown)
Real Time Query: OFF
Instance(s):
orcl1
orcl2 (apply instance)

Log file locations(*):
(*) - Check specific instance for log file locations.

Database Status:
SUCCESS

DGMGRL> show database dgorcl

Database - dgorcl

Role: PHYSICAL STANDBY
Intended State: APPLY-OFF
Transport Lag: 0 seconds (computed 0 seconds ago)
Apply Lag: 24 seconds (computed 0 seconds ago)
Average Apply Rate: (unknown)
Real Time Query: OFF
Instance(s):
orcl1
orcl2 (apply instance)

Database Status:
SUCCESS

DGMGRL>

此处开始主库操作：主库增加3条记录，这样主库是5条，备库是2条

SQL>
SQL> insert into test values(3);

1 row created.

SQL> insert into test values(4);

1 row created.

SQL> insert into test values(5);

1 row created.

SQL> commit;

Commit complete.

SQL> create database link expdp_primary connect to jyc identified by jyc using 'pdbdgorcl';

Database link created.

SQL> select db_unique_name from v$database;

DB_UNIQUE_NAME
------------------------------
orcl

SQL> select db_unique_name from v$database@expdp_primary;

DB_UNIQUE_NAME
------------------------------
dgorcl

SQL> exit
Disconnected from Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.5.0.0.0
[oracle@rac1 ~]$ expdp jyc/jyc@pdborcl network_link=expdp_primary directory=dmp schemas=JYC dumpfile=dg_jyc.dmp logfile=dg_jyc.log cluster=n exclude=statistics

Export: Release 19.0.0.0.0 - Production on Wed Feb 16 09:49:45 2022
Version 19.5.0.0.0

Connected to: Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
FLASHBACK automatically enabled to preserve database integrity.
Starting "JYC"."SYS_EXPORT_SCHEMA_01": jyc/********@pdborcl network_link=expdp_primary directory=dmp schemas=JYC dumpfile=dg_jyc.dmp logfile=dg_jyc.log cluster=n exclude=statistics
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
Processing object type SCHEMA_EXPORT/USER
Processing object type SCHEMA_EXPORT/SYSTEM_GRANT
Processing object type SCHEMA_EXPORT/ROLE_GRANT
Processing object type SCHEMA_EXPORT/DEFAULT_ROLE
Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA
Processing object type SCHEMA_EXPORT/TABLE/TABLE
. . exported "JYC"."TEST" 5.5 KB 2 rows
Master table "JYC"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded
******************************************************************************
Dump file set for JYC.SYS_EXPORT_SCHEMA_01 is:
/oracle/app/oracle/dmp/dg_jyc.dmp
Job "JYC"."SYS_EXPORT_SCHEMA_01" successfully completed at Wed Feb 16 09:50:33 2022 elapsed 0 00:00:39

[oracle@rac1 ~]$ expdp jyc/jyc@pdborcl directory=dmp schemas=JYC dumpfile=pri_jyc.dmp logfile=pri_jyc.log cluster=n exclude=statistics

Export: Release 19.0.0.0.0 - Production on Wed Feb 16 09:50:58 2022
Version 19.5.0.0.0

Connected to: Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
FLASHBACK automatically enabled to preserve database integrity.
Starting "JYC"."SYS_EXPORT_SCHEMA_01": jyc/********@pdborcl directory=dmp schemas=JYC dumpfile=pri_jyc.dmp logfile=pri_jyc.log cluster=n exclude=statistics
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
Processing object type SCHEMA_EXPORT/USER
Processing object type SCHEMA_EXPORT/SYSTEM_GRANT
Processing object type SCHEMA_EXPORT/ROLE_GRANT
Processing object type SCHEMA_EXPORT/DEFAULT_ROLE
Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA
Processing object type SCHEMA_EXPORT/DB_LINK
Processing object type SCHEMA_EXPORT/TABLE/TABLE
Processing object type SCHEMA_EXPORT/TABLE/COMMENT
Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX
. . exported "JYC"."TEST" 5.093 KB 5 rows
Master table "JYC"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded
******************************************************************************
Dump file set for JYC.SYS_EXPORT_SCHEMA_01 is:
/oracle/app/oracle/dmp/pri_jyc.dmp
Job "JYC"."SYS_EXPORT_SCHEMA_01" successfully completed at Wed Feb 16 09:51:54 2022 elapsed 0 00:00:48