z/OS

No modifications are needed for IBM z/OS environments. If you are using the extended architecture (XA) option of CICS, the product performs the following activities:

  • Detects these environments dynamically and exploits them

  • Automatically places all programs and work areas above the 16-MB line, except for a control program of 266 bytes

  • Obtains storage from EDSA if you are using CICS/ESA

We recommend the storage that is listed in the following table. These recommendations are based on a z/OS environment (with the XA option of CICS being used) in which all storage that is used by SUPEROPT is obtained from above the 16-MB line. CICS storage is allocated from the EDSA.

Storage Recommendations for MVS

Product panel

Option

Recommendation

1.6.1

Set Imaging and SCS Storage Allocation size

2048 KB

1.6.1

To reduce Storage Compression Percentage

0%

1.6.2

Set data stream storage size

31 KB

2.0.0

Set the 3270 Buffer storage size

31 KB

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