If you use a security exit with WMQ v7 on AIX, the amqrmppa process has a bug that causes it to leak memory. When the security exit accepts/allows a connection, about 0.24KB of memory per connection is leaked. When the security exit rejects a connection, about 0.61KB of memory per connection is leaked.
IBM has the following APAR IV10032 for the fix:
http://www.ibm.com/support/docview.wss?rs=171&uid=swg1IV10032
Regards,
Roger Lacroix
Capitalware Inc.