The following JCL can be used to disconnect a User Catalog from the Master Catalog of your z/OS system: //EXPORT EXEC PGM=IDCAMS //SYSPRINT DD SYSOUT=* //SYSIN DD * EXPORT user_catalog_name DISCONNECT /* user_catalog_name should be replaced by the name of your User Catalog dataset name. Alternatively you can issue […]
ISRFIND, ISRDDN and DDLIST are 3 of the most useful utilities under ISPF. ISRFIND and ISRDDN can be invoked as TSO commands, i.e., by issuing TSO ISRFIND and TSO ISRDDN on the ISPF command line. DDLIST on the other hand is an ISPF command table entry that invokes ISRDDN. This […]
VVDS stands for VSAM Volume Data Set and it’s a VSAM file that contains the information of all VSAM and SMS-managed non-VSAM data sets that reside on the volume where the VVDS file is allocated. A VVDS is recognised by the restricted data set name SYS1.VVDS.Vvolser, where volser is the volume […]
Sometimes we come across the need of changing the SMS information of a data set. The question of course is: how can we do it? Well, an easy way is to do it via batch job using the IDCAMS utility and the ALTER command: //SMSCHG EXEC PGM=IDCAMS //SYSPRINT DD SYSOUT=* […]
When setting up program control protection in RACF via the PROGRAM general resource class, you have the option to specify if the profile is to be PADCHK or NOPADCHK. PADCHK This is the default. With PADCHK, RACF will check for Program-Accessed Data Sets (PADS) that are already open before executing […]
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