# RSE Lock daemon

By switching to a single server setup, where multiple users are assigned to a single thread pool server, RSE lost the ability to track who owns a lock on a dataset or member. System commands stop at address space level, which is the thread pool server.

To address this problem, a new server has been created, the lock daemon. It can track all dataset/member locks done by RSE users, as well as locks done by other products, like ISPF.

Note: The Rational Developer for System z client will display the lock information where needed if the client is at a matching service level.

- Setup
- Usage

Parent topic: Rational Developer for System z v7.5.1 Host Readme