Oracle Tips by Burleson

Oracle 10g Shared Server Configuration

DISPATCHERS="(PROTOCOL=tcp)"

When you need to use shared servers while the system is running, you can simply set the dynamic shared_servers initialization parameter to a value greater than zero with an ALTER SYSTEM command.

As with other parameters, you can change just the current instance with this command and, if you are using an SPFILE, you can change the parameter for future instances as well. For example, to activate three shared servers in the current instance and the SPFILE, enter this command:

SQL> ALTER SYSTEM SET SHARED_SERVERS=3 SCOPE=BOTH;

There are several other parameters that can be set in the shared server environment, but they are not required. Once you set shared_servers, your system will be running in shared server mode.

Parameters with the prefix MTS are now obsolete. This means if you try to start an instance using these parameters you will receive the following error: “ORA-25138: <parameter> initialization parameter has been made obsolete “

Even if you try to set mts_servers during the runtime of an instance:

SQL> ALTER SYSTEM SET MTS_SERVERS = 2;
ALTER SYSTEM SET MTS_SERVERS = 2
*
ERROR at line 1:
ORA-25138: MTS_SERVERS initialization parameter has been made obsolete

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