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Is REDUNDANCY 1 a good retention policy for important DBs ?

Tesla_5Aug 19 2015 — edited Aug 21 2015

DB version: 11.2.0.4.0

Platform : RHEL 6.5

We have an important 2-Node RAC DB which is 14 TeraBytes in size. This is an Important DB which we can afford to have only 4 hours hours downtime ie. restore+recover needs to be completed in 4 hours.

During Restore test for this DB, we did a Full DB restore+recover from Hot backup in 3.5 hours .

Is a retention policy of REDUNDANCY 1 appropriate for this DB ? Any suggestion/correction , however trivial is welcome

Following is how we backup the DB using RMAN.

Full Backup (L0) ---- > Saturday and Wednesday early morning 1:00AM

Incremental (L1) -----> Remaining days morning 1:00 AM (Sunday, Monday, Tuesday, Thursday and Friday )

Archive Log backup and purge ----> 11AM, 4PM and 10PM everyday

DB size : 14 TB

SHOW ALL output.

$ rman target /

Recovery Manager: Release 11.2.0.4.0 - Production on Wed Aug 19 11:01:35 2015

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

connected to target database: RCASPRD (DBID=9247169542)

RMAN> show all;

using target database control file instead of recovery catalog

RMAN configuration parameters for database with db_unique_name RCASPRD are:

CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default

CONFIGURE BACKUP OPTIMIZATION OFF; # default

CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default

CONFIGURE CONTROLFILE AUTOBACKUP ON;

CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE 'SBT_TAPE' TO 'RCASCTRLFILE.%F';

CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default

CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default

CONFIGURE DEVICE TYPE SBT_TAPE PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default

CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default

CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE SBT_TAPE TO 1; # default

CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default

CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE SBT_TAPE TO 1; # default

CONFIGURE CHANNEL DEVICE TYPE 'SBT_TAPE' TRACE 1 PARMS  XXXXXXXXXXXXXX ;

CONFIGURE MAXSETSIZE TO UNLIMITED; # default

CONFIGURE ENCRYPTION FOR DATABASE OFF; # default

CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default

CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default

CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default

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Locked on Sep 18 2015
Added on Aug 19 2015
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