Database Administration (MOSC)

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hidden db parameter on Standby Database

edited Sep 1, 2013 10:36PM in Database Administration (MOSC) 1 commentAnswered
 I have 10.2.0.4 databases.  One is primary database and the other is physical standby database.  On comparing all parameters between the 2 dbs I have noticed that 3 parameters differ.  These parameters are: 
Parameter Name                Primary DB       Standby DB
_db_block_buffers                 74841             72922
_small_table_threshold             1496               1458
shared_pool_reserved_size         43.19M           44M

The question is:  What are the impact to change the standby DB parameter to align with the Primary DB.  The idea is to have Standby DB have identical parameters with Primary DB for consistency after fail-over/switch between the 2 environments.  I understand hidden parameters are to be changed on advice from Oracle. 

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