Oracle DBA, How To, Error, Cause and Action

ORA-00839: SGA_TARGET cannot be modified to the specified value

ORA-00839: SGA_TARGET cannot be modified to the specified value


Cause:


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



Action:


Set SGA_TARGET to be no more than the difference of MEMORY_TARGET/MEMORY_MAX_TARGET and PGA_AGGREGATE_TARGET. Also ensure that the current PGA memory used for non-auto workareas is low.

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