Defining Server Access to Shared Memory


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The SYSTEM_ACCESS parameter determines whether a server process may attach to shared memory and thus have access to internal tables outside system code. During application development, we recommend that such access be denied (PROTECTED). When the application is fully tested, you can change the value of SYSTEM_ACCESS to FASTPATH to yield better performance.

This parameter setting overrides the value specified in the RESOURCES section unless the NO_OVERRIDE value has been specified. In this case, the parameter is ignored. The NO_OVERRIDE value may not be used in this section.

Characteristics of the SYSTEM_ACCESS Parameter

The SYSTEM_ACCESS parameter has the following characteristics:

A value of PROTECTED indicates that the server may not attach to shared memory outside of system code.
A value of FASTPATH indicates that the server will attach to shared memory at all times.
If NO_OVERRIDE is specified in the RESOURCES section, this parameter is ignored.
The default is the value of the SYSTEM_ACCESS parameter in the RESOURCES section.
The BEA Tuxedo system runs more slowly when a value of PROTECTED is set.