# System Parameters

'WL' | Use Write Locks

## Description

(UNIX/Linux Only)

Temporarily blocks all other access for both READ and WRITE directives to a Keyed data file. (For that split second, only one access will be allowed.)

## Default

Off - PxPlus allows multiple simultaneous READ accesses to a Keyed file but only one WRITE access.

## See Also

WRITE Add/Update Data in File
READ Read Data from File