SAV= parameter for procedures

Use the SAV= parameter in procedure to specify a 1- to 3-digit number of dynamic save area sets for communication terminal I/O requests. IMS expands the number of SAPs up to 10 times this number as it needs to process the work being given to the system.

You can use the following formula for calculating the number of SAPs that your IMS system requires:

Formula for calculating the number of SAPs:

((# of VTAM terminals + 39) ÷ 40)
+ ((# of MSC links + 1) ÷ 2)
+ 1 (if VTAM required) + 60 (if ETO defined)
+ 4 (base ITASKs)

Valid values are from 1 to 999.

Note: Message DFS0769I could be issued while IMS is expanding the number of SAPs. If this message is issued, see IMS Version 15.2 Messages and Codes, Volume 1: DFS Messages for additional information.