ORA-31649: Master process string violated

admin

ORA-31649: Master process string violated startup protocol.
Cause: The master processwhose name is listed started up but then exited before
notifying the creating process that it was finished with initialization.
18-130 Oracle Database ErrorMessages
Action: Refer to anyfollowing error messages for possible actions. Check the trace
log for the failed process to see if there is any information about thefailure.
Correct the error, if possible, and try the operation again. If the erroroccurs again,
contact Oracle Customer Support and report the error.