The lock promotion thresholds set the number of page or row locks permitted by a task or worker process before Adaptive Server attempts to escalate to a table lock on the object. You can set lock promotion thresholds at the server-wide level, at the database level, and for individual tables.
The default values provide good performance for a wide range of table sizes. Configuring the thresholds higher reduces the chance of queries acquiring table locks, especially for very large tables where queries lock hundreds of data pages.
Lock promotion is always two-tiered: from page locks to table locks or from row locks to table locks. Row locks are never promoted to page locks.