How to fix the error ORA-00839: SGA_TARGET cannot be modified to the specified value?

In this post, you’ll learn more about the Oracle ErrorORA-00839: SGA_TARGET cannot be modified to the specified value with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

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

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

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

How to fix the Error ORA-00839: SGA_TARGET cannot be modified to the specified value ?

You can fix this error in Oracle by following the below steps

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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