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   Setting Up a BEA Tuxedo Application

You can shield system tables kept in shared memory from application clients and/or servers using the SYSTEM_ACCESS parameter. This parameter is useful when applications are being developed because faulty application code can inadvertently corrupt shared memory with a bad pointer. Once an application is fully debugged and tested, the value of this parameter can be changed to allow for faster responses. Following are valid values for this parameter:

• PROTECTED-BEA Tuxedo libraries compiled with application code do not attach to shared memory while executing system code.

• FASTPATH-BEA Tuxedo libraries attach to shared memory at all times.

Once you select a value, you can specify NO_OVERRIDE, which means that the selected option cannot be changed either by the client, in the TPINIT structure of the tpinit() call, or by the administrator, in the SERVERS section for servers.

Parameter	Characteristics
PROTECTED	Internal structures in shared memory are not corrupted inadvertently by application processes.
FASTPATH (default)	Application processes join the application with access to shared memory at all times.
NO_OVERRIDDE	The specified option (either PROTECTED or FASTPATH) cannot be changed.

Example Settings

 SYSTEM_ACCESS PROTECTED, NO_OVERRIDE