COMM (Communicate with MUF) › COMM NEWRXX (Request New Recovery File)

COMM NEWRXX (Request New Recovery File)

The COMM NEWRXX option requests a new Recovery File (RXX) be started. In response, the MUF performs an IBM CLOSE/OPEN on the Recovery File, allowing operations to mount a new tape.

Note: When running with active recovery (LOGRCV=YES) in z/OS, it is possible to specify a DASD file for the Recovery File (RXX). However, we recommend that you do not do this. The COMM NEWRXX function of DBUTLTY is ignored in this mode. Also, a DASD file that becomes full causes a system x37 abend (such as B37) and the MUF is unusable until canceled and restarted.

The COMM NEWRXX function communicates with one MUF. Be aware of the following:

• Ensure that DBUTLTY is communicating with the desired MUF by executing DBUTLTY with the same System Identifier module (DBSIDPR) that is being used by the MUF, and
• Ensure proper load library concatenation by keeping the System Identifier modules (DBSIDPR) in separate load libraries.

If the z/OS Cross-System Coupling Facility (XCF) is being used, ensure that the TOGROUP DBSIDPR parameter is correctly defined. See the CA Datacom/DB Database and System Administration Guide for more information on XCF.

When using a console command, these steps are unnecessary.