Enable Read Write On Physical Standby Database
Oracle 10g Enable Read Write On Physical Standby Database
On Standby Enable Flashback Database. SQL> show parameter db_recovery NAME TYPE VALUE ---------------------- ----------- ----------------------------------- db_recovery_file_dest string /u01/app/oracle/flash_recovery_area db_recovery_file_dest_size big integer 2G SQL> alter system set db_recovery_file_dest_size=6g; System altered. SQL> alter system set db_flashback_retention_target=1440; System altered. Retention period is 24 hours. SQL> alter database recover managed standby database cancel; Database altered. SQL> select open_mode from v$database; OPEN_MODE ---------- MOUNTED Prepare standby for read write. Cancel Redo apply. SQL> alter database recover managed standby database cancel; Database altered. Create a restore point named before_open_standby SQL> create restore point before_open_standby guarantee flashback database; Restore point created. SQL> select scn,storage_size,time, name from v$restore_point; SCN STORAGE_SIZE TIME NAME ------ ------------ ------------------------------ ------------------- 486759 8192000 19-JAN-12 06.37.39.000000000 AM BEFORE_OPEN_STANDBY SQL> On Primary SQL> alter system archive log current; System altered. Stop Remote Archive shipping since we are not going to use it. SQL> alter system set log_archive_dest_state_2=defer; System altered. SQL> alter system switch logfile; System altered. On Standby SQL> alter database activate standby database; Database altered. Skip the next statement. if the standby was not opened read-only since the instance was last started. SQL> startup mount force; Switch to maximum performance mode. SQL> alter database set standby database to maximize performance; Database altered. SQL> alter database open; Database altered. Stop remote redo shipping if any on standby. SQL> alter system set log_archive_dest_state_2 = defer; System altered. ---------------------------------------------------------------- Taking back the Standby Database to its original state. SQL> startup mount force; ORACLE instance started. Total System Global Area 285212672 bytes Fixed Size 1218992 bytes Variable Size 92276304 bytes Database Buffers 188743680 bytes Redo Buffers 2973696 bytes Database mounted. SQL> flashback database to restore point before_open_standby; Flashback complete. SQL> alter database convert to physical standby; Database altered. SQL> startup mount force; ORACLE instance started. Total System Global Area 285212672 bytes Fixed Size 1218992 bytes Variable Size 92276304 bytes Database Buffers 188743680 bytes Redo Buffers 2973696 bytes Database mounted. SQL> drop restore point before_open_standby; Restore point dropped. SQL> alter system set log_archive_dest_state_2=enable scope=both; System altered. SQL> alter database recover managed standby database disconnect from session; Database altered. All the gaps in the archive logs should be automatically applied because of the FAL_SERVER and FAL_CLIENT parameters. If that does not work and your database is too far behind, then make incremental backup on primary and apply it to standby. On Primary SQL> alter system set log_archive_dest_state_2 = enable scope=both; System altered.
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