READSEMA

The READSEMA option specifies whether the system attempts to gain a semaphore for shared files when I/O operations are performed that do not modify the file.

Syntax:

READSEMA = { ON } { OFF }

Parameters:

ON
Attempt to gain a semaphore for every file operation, including READ and START operations.
OFF
Do not attempt to gain a semaphore for shared files during operations such as READ and START.

Properties:

Default: OFF

Comments:

Where a file is being read by multiple users, to improve throughput set this parameter to OFF.