Shared Memory Area

Because an MSS-enabled enterprise server contains more types of object than a non-CICS enabled enterprise server, there are more objects to take into account when you are deciding how much space to allocate to the shared memory area.
Item Calculation
Remote systems
  • Number of sysids x 96
  • Number of sessions x 32
PCT Number of entries x 48
FCT Number of entries x 88 + (4 x number of split key components used)
DCT Number of entries x 48
PPT Number of entries x 48
Programs (load hold)1 Number active x (average length + 8)
TST Number of entries x 32
PLT Number of entries x (56 + (8 x average number of items in list))
JCT Number of entries x 48
ICE2 Number active x 64
AID3 Number active x 64
Getmain SHARED4 Number active x (average length + 8)
ENQ5
  • Number active x (24 + average argument length)
  • Number of processes waiting on ENQ x 16
CICS client requests6 (3270 data stream length + COMMAREA + TEUA + 64) x number of servers
Parent topic: Configuring CICS-enabled Enterprise Servers