Alter a Cluster's Attributes Using SMS Keywords: Example 1

In this example, the ALTER command is used with the MANAGEMENTCLASS and STORAGECLASS keywords.

//ALTER    JOB  ...
//STEP1    EXEC PGM=IDCAMS
//SYSPRINT DD   SYSOUT=A
//SYSIN    DD   *
    ALTER  -
           CLUS.ALTER.EXAMPLE -
           MANAGEMENTCLASS(VSAM) -
           STORAGECLASS(FAST) -
           LOG(ALL) -
           LOGSTREAMID(LogA)
/*

The ALTER command modifies some of the attributes of SMS-managed data set CLUS.ALTER.EXAMPLE. The data set is SMS-managed and is about to be used in production. Through use in production, it is expected to grow and require an increase in the frequency of backup, availability and performance. The parameters are MANAGEMENTCLASS, indicating a new management class of VSAM, and STORAGECLASS, indicating a storage class of FAST.

LOG(ALL) specifies that changes to the sphere accessed in RLS and DFSMStvs mode can be backed out and forward recovered using external logs. LOGSTREAMID gives the name of the forward recovery log stream.