逻辑备库是在物理备库的基础上搭建的，所以需要先搭建好物理备库。

备库执行如下操作：

[oracle@localhost ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production onFri Nov 7 15:03:30 2014

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Connected to:

Oracle Database 11g Enterprise EditionRelease 11.2.0.3.0 - 64bit Production

With the Partitioning, Oracle LabelSecurity, OLAP, Data Mining,

Oracle Database Vault and Real ApplicationTesting options

SQL> alter database recover managed standby database cancel;

Database altered.

SQL> exit

Disconnected from Oracle Database 11gEnterprise Edition Release 11.2.0.3.0 - 64bit Production

With the Partitioning, Oracle LabelSecurity, OLAP, Data Mining,

Oracle Database Vault and Real ApplicationTesting options

主库：

[oracle@localhost ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production onFri Nov 7 15:04:46 2014

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Connected to:

Oracle Database 11g Enterprise EditionRelease 11.2.0.3.0 - 64bit Production

With the Partitioning, Oracle LabelSecurity, OLAP, Data Mining,

Oracle Database Vault and Real ApplicationTesting options

SQL> alter database force logging; ---强制日志记录

Database altered.

SQL> alter database add supplemental log data; ----增加附加日志

Database altered.

SQL> exec dbms_logstdby.build; ---脚本

PL/SQL procedure successfully completed.

SQL>

备库

[oracle@localhost ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production onFri Nov 7 15:11:37 2014

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Connected to:

Oracle Database 11g Enterprise EditionRelease 11.2.0.3.0 - 64bit Production

With the Partitioning, Oracle LabelSecurity, OLAP, Data Mining,

Oracle Database Vault and Real ApplicationTesting options

SQL> alter database recover to logical standby jadl11g;

Database altered.

SQL> shutdown immediate----注意必须一致性性关闭数据库

ORA-01507: database not mounted

ORACLE instance shut down.

SQL> startup mount

ORACLE instance started.

Total System Global Area  626327552 bytes

Fixed Size                  2230952 bytes

Variable Size             268436824 bytes

Database Buffers          352321536 bytes

Redo Buffers                3338240 bytes

Database mounted.

SQL> alter database open resetlogs; *********

Database altered.

SQL> alter database start logical standby apply;

Database altered.

登录DGMGRL：

DGMGRL> createconfiguration dgc as primary database is pjadl11g connect identifier ispjadl11g;

Configuration "dgc" created withprimary database "pjadl11g"

DGMGRL> add database sjadl11g as connect identifier issjadl11g maintained as logical;

Database "sjadl11g" added

DGMGRL> enable configuration

Enabled.

DGMGRL> show configuration

Configuration - dgc

  Protection Mode: MaxPerformance

  Databases:

    pjadl11g - Primary database

    sjadl11g - Logical standby database

Fast-Start Failover: DISABLED

Configuration Status:

SUCCESS

至此逻辑备库搭建完毕！！！！！！！

DGMGRL> show configuration verbose;

Configuration - dgc

 Protection Mode: MaxPerformance

 Databases:

   pjadl11g - Primary database

   sjadl11g - Logical standby database

 Properties:

   FastStartFailoverThreshold      =‘30‘

   OperationTimeout                =‘30‘

   FastStartFailoverLagLimit       =‘30‘

   CommunicationTimeout            =‘180‘

   FastStartFailoverAutoReinstate  =‘TRUE‘

   FastStartFailoverPmyShutdown    =‘TRUE‘

   BystandersFollowRoleChange      =‘ALL‘

Fast-Start Failover: DISABLED

Configuration Status:

SUCCESS

DGMGRL> show database verbose sjadl11g;

Database - sjadl11g

 Role:            LOGICAL STANDBY

 Intended State:  APPLY-ON

 Transport Lag:   0 seconds

 Apply Lag:       0 seconds

 Instance(s):

   jadl11g

 Properties:

   DGConnectIdentifier             =‘sjadl11g‘

   ObserverConnectIdentifier       =‘‘

    LogXptMode                      = ‘ASYNC‘

   DelayMins                       =‘0‘

   Binding                         =‘optional‘

   MaxFailure                      =‘0‘

   MaxConnections                  =‘1‘

   ReopenSecs                      =‘300‘

   NetTimeout                      =‘30‘

   RedoCompression                 =‘DISABLE‘

   LogShipping                     =‘ON‘

    PreferredApplyInstance          = ‘‘

   ApplyInstanceTimeout            =‘0‘

   LsbyASkipTxnCfgPr               =‘0,0,0‘

   LsbyDSkipTxnCfgPr               =‘0,0,0‘

   LsbyASkipCfgPr                  =‘‘

   LsbyDSkipCfgPr                  =‘‘

    LsbyASkipErrorCfgPr             = ‘‘

   LsbyDSkipErrorCfgPr             =‘‘

   LsbyMaxEventsRecorded           =‘0‘

   LsbyPreserveCommitOrder         =‘‘

   LsbyRecordSkipErrors            =‘‘

   LsbyRecordSkipDdl               =‘‘

   LsbyRecordAppliedDdl            =‘‘

   ArchiveLagTarget                =‘0‘

   LogArchiveMaxProcesses          =‘4‘

   LogArchiveMinSucceedDest        =‘1‘

   FastStartFailoverTarget         =‘‘

   InconsistentProperties          =‘(monitor)‘

   InconsistentLogXptProps         =‘(monitor)‘

   SendQEntries                    =‘(monitor)‘

   LogXptStatus                    =‘(monitor)‘

   RecvQEntries                    =‘(monitor)‘

   LsbyParameters                  =‘(monitor)‘

   LsbySkipTxnTable                =‘(monitor)‘

   LsbySkipTable                   =‘(monitor)‘

   LsbyFailedTxnInfo               =‘(monitor)‘

   SidName                         =‘jadl11g‘

   StaticConnectIdentifier         =‘(DESCRIPTION=(ADDRESS=(PROTOCOL=tc                        =localhost.localdomain)(PORT=1521))(CONNECT_DATA=http://www.mamicode.com/(SERVICE_NAME=sjadl11g_D INSTANCE_NAME=jadl11g)(SERVER=DEDICATED)))‘

   StandbyArchiveLocation          =‘USE_DB_RECOVERY_FILE_DEST‘

   AlternateLocation               = ‘‘

   LogArchiveTrace                 =‘0‘

   LogArchiveFormat                =‘%t_%s_%r.dbf‘

   LsbyMaxSga                      =‘0‘

   LsbyMaxServers                  =‘0‘

   TopWaitEvents                   =‘(monitor)‘

Database Status:

SUCCESS

DGMGRL> edit database sjadl11g set propertylogxptmode=‘sync‘;---修改参数

DG搭建逻辑备库