Sequence for starting CSL address spaces

The CSL comprises several address spaces, some of which need to be started either before or after other CSL and IMS address spaces.

The recommended starting sequence for the CSL is:

1. Start the SCI address space and IRLM.
2. Start the OM address space and, if your IMSplex includes queue structures and resource structures, CQS.
3. If needed, start the Repository Server (RS) address space.
4. If needed, start the RM address space, which manages resources that are shared by multiple IMS systems in an IMSplex.
5. Start the IMS control region. The IMS control region then automatically initiates the DBRC address space.
6. If needed, start any other optional IMSplex components, such as ODBM (which routes database access requests to IMS DB in DB/TM and DBCTL configurations) and IMS Connect.

If CQS is started before the SCI address space, message CQS0001E is issued. See IMS Version 15.4 Messages and Codes, Volume 2: Non-DFS Messages.