Oracle : Ошибка ORA-00827

"could not shrink sga_target to specified value"
*Cause: Attempted to shrink the SGA to the specified value but did not
succeed because the SGA components could not be shrunk as they
were already at their minimum sizes.
*Action: Do not set sga_target to a value below the current value without
first shrinking the individual SGA components.

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