Microsoft KB Archive/11738

COBOL Record Locking Failure in System V XENIX

PSS ID Number: Q11738 Article last modified on 11-16-1992

2.10 2.20 XENIX

Summary: Record locking on ISAM files in COBOL Version 2.10 or 2.20 for XENIX does not work correctly under certain versions of XENIX System V. When a file is opened and a record is read and locked, the same record can then be read from another terminal. This problem is caused by IBM’s System V XENIX. You can obtain a patch for this problem from IBM by calling (800) 426-2569. After installing the patch, record locking functions properly. Santa Cruz Operations (SCO) Version 2.03 of System V XENIX had a very similar problem; SCO has a patch for that problem as well. You can obtain this patch by calling SCO at (800) 626-4381. The problem does not occur in later Versions of SCO System V XENIX, such as Version 2.06.

Copyright Microsoft Corporation 1992.