The WebSphere MQ agent provides the ability to cleanup shared memory when the queue manager is shutting down. When this cleanup occurs it can on some occassions produce console messages if the shared memory segment is not found i.e.
# uname -r
5.8
# ipcrm -m 12
ipcrm: shmid(12): not found
usage: ipcrm [ [-q msqid] [-m shmid] [-s semid]
[-Q msgkey] [-M shmkey] [-S semkey] ... ]
#
# uname -r
5.9
# ipcrm -m 12
ipcrm: shmid(12): not found
usage: ipcrm [ [-q msqid] [-m shmid] [-s semid]
[-Q msgkey] [-M shmkey] [-S semkey] ... ]
#
# uname -r
5.10
# ipcrm -m 12
ipcrm: shmctl(12): not found
#