Shulou(Shulou.com)06/01 Report--

During the construction of Oracle11g RAC + DG, the error of duplicate Times in preparing the database is as follows:

[oracle@xxxx-dg:/u01/app/oracle/11.2/db_1/dbs] $rman target sys/password@racdb auxiliary sys/password@racdg nocatalogRecovery Manager: Release 11.2.0.4.0-Production on Fri Abc 21 17:33:01 xxxxCopyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.connected to target database: RACDB (DBID=938466123) using target database control file instead of recovery catalogconnected to auxiliary database (not started) RMAN > duplicate target database for standby from active database nofilenamecheck Starting Duplicate Db at xxxx-xx-21 17:33:04RMAN-00571: = = RMAN-00569: = ERROR MESSAGE STACK FOLLOWS = RMAN-00571: = RMAN-03002: failure of Duplicate Db command at xx/21/xxxx 17:33:05RMAN-05501: aborting duplication of target databaseRMAN-06403: could not obtain a fully authorized sessionRMAN-04006: error from auxiliary database: ORA-01034: ORACLE not availableORA-27101: shared memory realm does not existLinux-x86_64 Error: 2: No such file or directoryRMAN > exit

Pass through

RMAN-04006: error from auxiliary database: ORA-01034: ORACLE not availableORA-27101: shared memory realm does not existLinux-x86_64 Error: 2: No such file or directory

As you can see, due to the failure to connect to the database, it is found that when you connected to the database through Rman, the standby library was already started to the nomount state, but when

RMAN > duplicate target database for standby from active database nofilenamecheck

When the slave database lost down for some reason, check the alert log and find that after the RMAN connection and after the slave database nomount starts, the database performs shutdown immediate operation and restarts the database to nomount state, startup nomount. Proceed again

Duplicate

The same error was not reported

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