z/OS V1R6.0 DFSMS Access Method Services for Catalogs

ALTERUNLOCKSpecifies that the catalog identified by entryname is to be unlocked. ForRACF and nonprotected catalogs, unlocking a locked catalog requires readauthority to RACF FACILITY class profile IGG.CATLOCK.MANAGEMENTCLASS(class)For SMS-managed data sets: Gives the name, 1 to 8 characters, of themanagement class for a data set. Your storage administrator defines the namesof the management classes you can include. If MANAGEMENTCLASS is usedfor a non-SMS-managed data set, or if SMS is inactive, the ALTER command isunsuccessful.When the storage or management class is altered for a DFSMShsm migrateddata set, ALTER will not recall the data set to make the change, provided noother parameters are specified.You must have RACF access authority to alter the management class.Abbreviation: MGMTCLASNEWNAME(newname)Indicates that the entry to be altered is to be given a new name.When you rename an SMS-managed data set residing on DASD, theMGMTCLAS ACS routine is called and lets you reassign a new managementclass.You can use ALTER NEWNAME to rename SMS-managed generation data sets(GDS). Table 4 on page 65 shows how NEWNAME resolves renaming a GDSunder different conditions. You can successfully rename the following:v An SMS-managed GDS to an SMS-managed non-VSAM data setv An SMS-managed non-VSAM data set to an SMS-managed GDSv An SMS-managed GDS to another SMS-managed GDSRestriction: You cannot ALTER the data portion of a page space data set to anew name. Also, catalog names and catalog component names cannot berenamed.You might not be able to rename a data set if you are changing the high-levelqualifiers of the data set’s name and those qualifiers are an alias name of acatalog. (The number of high-level qualifiers used to form an alias can be oneto four, depending on the multilevel alias search level used at yourinstallation.)If you are changing a high-level qualifier, NEWNAME acts differently,depending on whether the data set being renamed is SMS-managed ornon-SMS-managed, and whether the data set has aliases or not. Table 4 onpage 65 shows how NEWNAME resolves under different conditions.64 z/OS V1R6.0 DFSMS Access Method Services for Catalogs