The DB2 -nnnn subsystem STOP command issued from the master console will produce the following error messages:
DSN9016I -SB1A '-STOP' COMMAND REJECTED, UNAUTHORIZED REQUEST
DSN9023I -SB1A DSN9SCND '-STOP DB2' ABNORMAL COMPLETION
z/OS 1.10 and above.
The "-STOP" command requires authority to DB2SYS(SYSOPR).
Issue the following command to authorize the user.
TSS PERMIT(acid) DB2SYS(SYSOPR)