Disabling DECdtm Services

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HP OpenVMS System Manager's Manual, Volume 2:...

Managing DECdtm Services

Removing a Node

Enabling DECdtm Services

Disabling DECdtm Services

By default, DECdtm services start automatically when you boot the computer. The DECdtm process, TP_SERVER, then checks for a transaction log, and continues checking until it finds one.

Disable DECdtm services if you do not use, and do not plan to use, any software that uses DECdtm services. This saves memory and CPU time.

In an OpenVMS Cluster, disable DECdtm services on all the nodes in the cluster.

How to Perform This Task

For each node:
1. Log in to the node.
2. Stop the TP_SERVER process using LMCP's CLOSE LOG command:
```
$ RUN SYS$SYSTEM:LMCP
LMCP> CLOSE LOG
```
  The CLOSE LOG command stops the TP_SERVER process, providing no software is using DECdtm services.
  
  If the CLOSE LOG command fails, do not continue this task. If you have already stopped the TP_SERVER process on other nodes in a cluster system, restart the process using the SYS$STARTUP:DECDTM$STARTUP.COM command procedure.

Add the following line to the SYS$MANAGER:SYLOGICALS.COM command procedure:
```
$ !
$ DEFINE/SYSTEM/EXECUTIVE_MODE SYS$DECDTM_INHIBIT yes
$ !
```
If you created node-specific versions of SYLOGICALS.COM, edit all the versions.

This stops the TP_SERVER process being created the next time you boot the system.

Removing a Node

Enabling DECdtm Services