Modify CICS internal TCPIP support.
SET TCPIP >>-SET TCPIP--MAXSOCKETS(data-value)----------------------------> >--NEWMAXSOCKETS(data-value)--+-OPENSTATUS(data-value)-+------->< +-CLOSED-----------------+ +-IMMCLOSE---------------+ '-OPEN-------------------'
Conditions: INVREQ, IOERR, NOTAUTH, NOTSUPERUSER
For more information about the use of CVDAs, see CICS-value data areas (CVDAs).
SET TCPIP allows you to open or close CICS internal sockets support.
If the userid under which the CICS job is running has superuser authority, up to 65535 sockets can be managed by the sockets domain.
If the userid under which the CICS job is running does not have superuser authority, the maximum number of sockets that can be managed by the sockets domain is limited to the number specified in the MAXFILEPROC parameter in SYS1.PARMLIB member BPXPRMxx. If you specify a greater value, CICS sets the limit to MAXFILEPROC.
Note that sockets created by Java programs running on threads that are not managed by CICS do not count towards the MAXSOCKETS limit.
If you reduce the limit to less than the number of sockets currently active, CICS prevents new sockets from being created until the number of active sockets falls below the limit.
If the userid under which the CICS job is running does not have superuser authority, CICS may set the MAXSOCKETS limit to a smaller value than requested. NEWMAXSOCKETS tells you the limit that CICS has set.