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DWACT fails with message IST242I sense 08010000 when z/OS Enterprise Extender switched major node is activated

Question & Answer


Question

The names of the z/OS Enterprise Extender (EE) XCA major node and EE switched major node are specified, in that order, in the VTAM configuration list. DWACT=YES is specified on the definition of the switched PU in the EE switched major node. DWACT=YES indicates that the switched PU is to be automatically dialed when activated.

When VTAM initializes, the EE XCA major node is expected to be automatically activated successfully, followed by the successful automatic activation of the EE switched major node. However, the following error messages are issued instead:

IST2179I NO DIAL-OUT LINE FOUND FOR SWITCHED PU switched_pu_name

IST242I DWACT COMMAND FAILED FOR ID = switched_pu_name SENSE = 08010000

Answer

The sense code 08010000 (resource not available) indicates that the EE logical line is not available yet.

REDIAL was not specified on the PATH statement, so the default value of 3 was taken.

There was a delay in the EE XCA lines becoming active (something like a delay in starting IUTSAMEH) and the PU dial had exhausted its 3 retries.

REDDELAY was also not coded on the PATH statement, with the result that the number of seconds between each attempt to redial the Enterprise Extender connection defaulted to 30 seconds.

In summary, the combination of REDIAL and REDDELAY default values taken in this situation did not permit enough time for recovery from network problems.

You can code REDIAL=FOREVER, or increase the overall time of REDIAL processing by increasing REDIAL or REDDELAY (or both), setting them to values significantly higher than their default values.

REDIAL=FOREVER will result in dialing being retried as necessary until either a connection is established or the PU is deactivated.

Coding REDIAL=high_number in the associated PATH statement, where high_number is a high number in the valid range of 0 - 254, will cause VTAM to keep trying the connection for the number of times specified on REDIAL. No redialing is specified if REDIAL is set to zero. The REDIAL parameter can also be specified on the PU definition in the model major node.

REDDELAY, the number of seconds between each attempt to redial an Enterprise Extender connection, should be set to a high value in the valid range of 1 - 1200.

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Product Synonym

ZOSCS COMMSERVER

Document Information

Modified date:
19 November 2015

UID

dwa1185675