Oracle DBA, How To, Error, Cause and Action

ORA-00840: PGA_AGGREGATE_TARGET cannot be modified to the specified value

ORA-00840: PGA_AGGREGATE_TARGET cannot be modified to the specified value


Cause:


The specified value of PGA_AGGREGATE_TARGET was not compatible with current settings of SGA_TARGET and MEMORY_TARGET/MEMORY_MAX_TARGET.



Action:


Set PGA_AGGREGATE_TARGET to be no more than the difference of MEMORY_TARGET/MEMORY_MAX_TARGET and SGA_TARGET.

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