Using an alias to refer to an MQ library
You can define an alias to refer to an MQ library in your JCL, rather than use the name of the MQ library directly. Then, if the name of the MQ library changes, you have only to delete and redefine the alias.
Example
The following example defines an
alias MQM.SCSQANLE to refer to the MQ library MQM.V600.SCSQANLE:
//STEP1 EXEC PGM=IDCAMS
//SYSPRINT DD SYSOUT=*
//SYSIN DD *
DEFINE ALIAS (NAME(MQM.SCSQANLE) RELATE(MQM.V600.SCSQANLE))
/*
Then, to refer to the MQM.V600.SCSQANLE library in your
JCL, use the alias MQM.SCSQANLE.Note: The library and alias names
must be in the same catalog, so use the same high level qualifier
for both; in this example, the high level qualifier is MQM.