z/OS MVS Setting Up a Sysplex
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Recover the Hung connectors

z/OS MVS Setting Up a Sysplex
SA23-1399-00

In this step you will be shutting down one or more jobs, systems, or both to recover the hung connector(s). If it becomes necessary to shut down more than one job or system, consider shutting down one job or system at a time and then check to see if that action recovered the hung connector. If not, proceed to the next job or system shut down.
  • If a job was identified as a candidate for recovery actions, shut down that job.
  • If a system was identified as a candidate for recovery actions, shut down that system.
  • If no jobs or systems were identified as candidates for recovery actions, shut down all jobs containing ACTIVE connectors to the structure with hung connectors.
After the shut down is complete, display the structure by issuing the following command:
DISPLAY XCF,STRUCTURE,STRNAME=strname 
Examine the output of the command (IXC360I) and locate information about the structure connections. (In the following example, IRLMA on SYS1 was shut down.)
CONNECTION NAME   ID   VERSION   SYSNAME  JOBNAME  ASID   STATE
-----------------  --  --------  --------  --------  ----  ------
IRLMGRP1$IRLA001   03   0003002F  SYS1       IRLMA     001D  FAILED-
                                                             PERSISTENT       
IRLMGRP1$IRLB002   02   0002008C  SYS2       IRLMB     0058   ACTIVE
IRLMGRP1$IRLC003   01   00010099  SYS3       IRLMC     003F  FAILED- 
                                                             PERSISTENT
  • If the FAILING and DISCONNECTING states have been resolved as indicated by the FAILING connector entering a FAILED-PERSISTENT or undefined state, and the DISCONNECTING connection becoming undefined, reinitialize the jobs that were shut down. Those jobs should restart and reconnect to the structure successfully.
  • If the FAILING and DISCONNECTING states have not been resolved:
    • For the structure with the hung connectors, shut down all the remaining ACTIVE connectors. With all the active connectors shut down, the connections should all be in an undefined state or a FAILED-PERSISTENT state depending on the exploiter of the structure. Issue DISPLAY XCF,STRUCTURE,STRNAME=strname and verify that all connections have entered a FAILED-PERSISTENT or undefined state. Once verified, restart all jobs.
    • If all the connector jobs were shut down and the connections still have not entered a FAILED-PERSISTENT or undefined state, contact XCF Programming Support for additional assistance.

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