Controls the locking isolation level for catalog store tables.
Each locking isolation level is defined as follows:
0 – Allow dirty reads, nonrepeatable reads, and phantom rows.
1 – Prevent dirty reads. Allow nonrepeatable reads and phantom rows.
2 – Prevent dirty reads and guarantee repeatable reads. Allow phantom rows.
3 – Serializable. Do not allow dirty reads, guarantee repeatable reads, and do not allow phantom rows.
ISOLATION_LEVEL determines the isolation level for tables in the catalog store. Sybase IQ always enforces level 3 for tables in the IQ store. Level 3 is equivalent to ANSI level 4.