Reconfiguration of the locking system is sometimes required. You can set the default locking level (system_lock_level) and the maximum number of locks that can be obtained per transaction (system_maxlocks). These parameters are located under the DBMS Server component. The locking parameters are installation-wide.

On UNIX systems, shared memory is used as a resource during lock control. The shared memory used by your installation is configured in the operating system when the UNIX kernel is configured.