Automatic restart
If you run Db2 in a sysplex, you can have the automatic restart function of z/OS automatically restart Db2 or IRLM after a failure.
When Db2 or IRLM stops abnormally, z/OS determines whether z/OS failed too, and where Db2 or IRLM should be restarted. It then restarts Db2 or IRLM.
You must have Db2 installed with a command prefix scope of S to take advantage of automatic restart.