Oracle Error ORA-09987: unable to attach to SGA in READ-ONLY mode Oracle 18 Views 0 Min Read Oracle Error Message ORA-09987: unable to attach to SGA in READ-ONLY mode Reason for the Error The instance is not up, or SGA segments are not read-accessible Solution Verify that the instance is up and read permissions for the SGA segments are set. Related admin November 20, 2024
