DCMT VARY LOG DRIVER

DCMT VARY LOG DRIVER varies the log service driver task online or offline.
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DCMT VARY LOG DRIVER varies the log service driver task online or offline.
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Syntax
Following is an example of the syntax for DCMT VARY LOG DRIVER:
►►─── DCMT ─┬───────────────────┬─────────────────────────────────────────────►             └─ 
broadcast-parms
 ─┘  ►─── Vary Log Driver ─┬─ ONline ──┬──────────────────────────────────────────►◄                        └─ OFFline ─┘
Parameters
Following are the descriptions for the DCMT VARY LOG DRIVER parameters:
  • broadcast-parms
    Indicates to execute the DCMT command on all or a list of data sharing group members. For more information about broadcasting and
    broadcast-parms
    syntax, see How to Broadcast System Tasks.
  • ONline
    Varies the log service driver task online.
  • OFFline
    Varies the log service driver task offline.
Usage
Use Log Service Drivers Depending on System Activity
When a non-z/VSE system with more than one log service driver shows only a small amount of logging activity, you can use this command to disable a driver to save system resources. When logging activity increases, you can restart the log service driver to optimize log I/O operations.
Allowable Number of Log Service Drivers
Non-z/VSE systems can have up to three log service drivers. z/VSE systems can have one log service driver.
You define a log service driver to the system each time you issue a DCMT VARY LOG DRIVER ONLINE command.
Examples
The following examples display output using the OFFline and ONline parameters:
DCMT VARY LOG DRIVER OFFLINE
      VARY LOG DRIVER OFFLINE IDMS DC260100 V105 USER:JSMITH DCMT       VARY LOG DRIVER OFFLINE IDMS DC286001 V105 USER:JSMITH   SHUTTING DOWN LOG SERVICE DRIVER TASK   : 10
DCMT VARY LOG DRIVER ONLINE
      VARY LOG DRIVER ONLINE IDMS DC260100 V105 USER:JSMITH DCMT       VARY LOG DRIVER ONLINE IDMS DC286002 V105 USER:JSMITH   ATTACHING TASK FOR SERVICE DRIVER RHDCLGSD
More Information
For more information, see
DCMT DISPLAY LOG.