Oracle Tips  by Burleson Consulting

The Data Warehouse Development Life Cycle

MANAGING A MULTITHREADED SERVER (MTS)
* If you encounter problems with the MTS, you can quickly regress to dedicated servers by issuing an ALTER SYSTEM command. The following command turns off the MTS by setting the number of MTS servers to zero:

SQLRemote DBA> ALTER SYSTEM SET MTS_SERVERS=0;

* In order to use OPS$, you must set two init.ora values to true (they default to false).

remote_os_authent = true
remote_os_roles = true

* When both SQL*Net 1.0 and 2.0 are installed, the user may connect to the server either via a dedicated server or the MTS. However, you cannot stop and restart the listener when connecting via the MTS. You must connect to SQL*Remote DBA with a dedicated server.

* In some cases, the instance must be bounced if the listener is stopped, or the listener will restart in dedicated mode. Whenever an instance is to be bounced, stop the listener, shut down the instance, restart the listener, and start up the instance. The listener reads the MTS parameters only if it is running before the startup of the instance. Therefore, bouncing the listener will disable the MTS.

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This is an excerpt from "High Performance Data Warehousing".

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