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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.

Related topic

Installation-considerations-for-products

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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