z/OS DFSMStvs Planning and Operating Guide
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Defining a parmlib member that applies to multiple systems

z/OS DFSMStvs Planning and Operating Guide
SC23-6877-00

This example defines a PARMLIB member that applies to multiple systems and sets up these properties:
  • An ACDS of SYS1.ACDS10
  • A communications data set of SYS1.COMMDS10
  • An interval of 20 seconds before synchronizing with any other SMS subsystems in the complex
  • Three instances of the DFSMStvs name, IGWTV001, IGWTV002, and IGWTV003, to be established on the systems named SYSTEM1, SYSTEM2, and SYSTEM3, respectively
  • The default quiesce timeout value (300)
  • The default activity keypoint value (1000)
  • A log of logs, which has the log stream name: IGWLOG.LOGLOGS
  • DFSMStvs performs a cold start on all systems
The IGDSMSxx member of PARMLIB includes this statement:
SMS ACDS(SYS1.ACDS10) COMMDS(SYS1.COMMDS10) INTERVAL(20)
    LOG_OF_LOGS(IGWLOG.LOGLOGS)
    SYSNAME (SYSTEM1,SYSTEM2,SYSTEM3)
    TVSNAME( 1, 2, 3)
    TV_START_TYPE(COLD,COLD,COLD)

Recommendation: You should cold start DFSMStvs only when the log has been damaged and cannot be trusted to use for backouts. In any other situation, you should always warm start DFSMStvs because you would leave your data sets damaged if you did a cold start. Before a cold start, print the log so that you have some information about what might be damaged.

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