CICS Communication Area Max Size

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CICS Communication Area Max Size

Postby freelar » Wed Jan 07, 2009 8:51 pm

We are on version 2.3 of CICS on our LPAR and I assume the Communication Area max size for it is 32K? That's what I'm finding but not the versions 32K is the max or is it still all current versions?
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Re: CICS Communication Area Max Size

Postby CICS Guy » Thu Jan 08, 2009 12:54 am

According to the LENGTH options in CICS commands:
When a CICS command offers the LENGTH option, it is generally expressed as a signed halfword binary value. This puts a theoretical upper limit of 32 763 bytes on LENGTH. In practice (depending on issues of recoverability, function shipping, and so on), the achievable upper limit varies from command to command, but is somewhat less than this theoretical maximum. To be safe, do not let the value assigned to the length option for any CICS command exceed 24KB.
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