Can a CICS Commarea be larger than 32K

We have some limitations due to the size of CICS Commarea.

A google search shows questions asking how to have more than 64K. But I have not found how to get more than 32K.

Is the max CICS Commarea 32K? If not how can it be increased.


  • A CICS commarea is limited to 32K - 1, the maximum value that can be stored in a signed halfword.

    There is no way to have a commarea larger than 32K - 1. One mechanism to get around this limitation is to use channels. There are also Redbooks on the subject.