Revision as of 17:10, 10 March 2009

SET LOCKWAIT

Class

Environment

Purpose

Enable or disable automatic record locking

Syntax

SET LOCK ON | OFF | (<expL>)

SET LOCKWAIT ON | OFF | (<expL>)

See Also

FLOCK(), LOCK(), LOCKF, LOCKR, RLOCK(), UNLOCK

Description

The SET LOCKWAIT command determines locking behavior when you attempt to gain UPDATE access to a record which is already locked by another user. This command is only effective with shared tables. With SET LOCKWAIT ON, commands such as REPLACE will wait until a lock can be obtained. With SET LOCKWAIT OFF, an error will be generated, telling you that the operation cannot take place as the ’Record is in use by another user’. In the forms system, both settings give you the opportunity to either wait for the record to be unlocked by the other user and your lock to be granted, or, to access the record in QUERY mode. To switch from ’Query’ mode to ’Update’ mode in a form, press the [UPDATE MODE] key. By default, LOCKWAIT is ON.

Example

use patrons index events, dates, names
set filter to event = "HAMLET"
browse

Products

Recital Database Server, Recital Mirage Server, Recital Terminal Developer