Planning user IDs

When planning user IDs for use with ETO there are a number steps you should take.

• Ensure that dynamic user structures have unique names in IMS. Support for unique user IDs depends on whether user-based security is important. For user-based security, user IDs must be unique to the user. Otherwise, user IDs can be the same as the terminal LU name.
• Code the Signon exit routine (DFSSGNX0) to provide user ID suffixing, if users need to sign on to more than one terminal with the same user ID at the same time. Review and select the SGN and RCF EXEC keyword parameters.
• Analyze how application programs use the user field in the I/O PCB.