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WTSupported in traditional Synergy on Windows
WNSupported in Synergy .NET on Windows
USupported on UNIX
VSupported on OpenVMS
One of the following identifiers or corresponding values: (n)
Do not lock the record.
Perform automatic locking on the record. (default)
Perform manual locking on the record.
Do not lock the record or probe the index tree.
The LOCK qualifier specifies whether the operation requires a record lock.
Manual locking is similar to automatic locking, except that manual locking blocks all update reads until either the channel is closed, an explicit UNLOCK with the RFA qualifier specified is performed, or the FREE subroutine is called.
Q_NO_LOCK allows you to READ a locked record when it’s opened in update mode. The read record is not locked.
On Windows and UNIX,
Q_NO_TLOCK and Q_NO_LOCK are synonymous on OpenVMS systems.
On the OPEN statement for both non‑ISAM and ISAM files, the Q_NO_LOCK and Q_AUTO_LOCK are the only valid options for the LOCK qualifier.
On the STORE statement, Q_NO_LOCK and Q_MANUAL_LOCK are the only valid options for the LOCK qualifier.