Modify the CICS VTAM connection.
SET VTAM >>-SET VTAM--+------------------+-------------------------------> +-OPENSTATUS(cvda)-+ +-CLOSED-----------+ +-FORCECLOSE-------+ +-IMMCLOSE---------+ '-OPEN-------------' >--+--------------------------------+--+--------------+-------->< +-PSDINTERVAL(data-value)--------+ '-DEREGISTERED-' | .----------------------------. | | V | | '---+------------------------+-+-' +-PSDINTHRS(data-value)--+ +-PSDINTMINS(data-value)-+ '-PSDINTSECS(data-value)-'
Conditions: INVREQ, IOERR, NOTAUTH
For more information about the use of CVDAs, see CICS-value data areas (CVDAs).
The SET VTAM command allows you to:
Generic resources are described in the CICS® Intercommunication Guide.
If CICS is using VTAM multi-node persistent sessions, and VTAM has been restarted after an abend, opening the VTAM ACB causes CICS to restore the persistent sessions that VTAM has retained. However, CICS does not restore APPC synclevel 2 sessions, which are unbound.
When you specify a PSD interval, CICS sets the system initialization option PSDINT (see the CICS System Definition Guide for more about this option). CICS passes this value to VTAM whenever it opens the ACB. This occurs immediately if you specify an OPENSTATUS value of OPEN in the same SET SYSTEM command, or if the VTAM ACB is already open and you do not close it. If the ACB is closed or being closed, or if the open attempt fails, the new value is established on the next successful open.
If VTAM is below the level that supports persistent sessions (Version 3.4.1), VTAM rejects the PSD request. CICS then sets the PSDINT system option value to zero and returns an INVREQ condition, but goes on to continue any other processing you requested. The INVREQ occurs when the value is passed to VTAM, which may be later than the command that set it, as explained above. Consequently, you can get this condition on a command that does not specify a PSD interval.
The PSD interval can be expressed in several ways:
When you use PSDINTERVAL or more than one of the separate options, the minutes and seconds portions of the value must not be greater than 59 (PSDINTMINS or PSDINTSECS used alone can exceed 59). For example, you could express an interval of 1 hour and 30 minutes in any of the following ways: