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AdministeringIn addition to administering the database server, you can tune performance, replicate data, and archive data.
System administrationThese topics contain concepts, procedures, and reference information for database and database server administrators to use for managing and tuning HCL OneDB™ database servers.
Performance GuideThe HCL OneDB™ Performance Guide describes how to configure and operate your HCL OneDB™ database server to improve overall system throughput and to improve the performance of SQL queries.
LockingThe database server uses locks, which can affect concurrency and performance. You can monitor and administer locks.
LocksA lock is a software mechanism that you can set to prevent others from using a resource. You can place a lock on a single row or key, a page of data or index keys, a whole table, or an entire database.
Database locksYou can place a lock on the entire database when you open the database with the DATABASE statement. A database lock prevents read or update access by anyone but the current user.

Database locks

You can place a lock on the entire database when you open the database with the DATABASE statement. A database lock prevents read or update access by anyone but the current user.

The following statement opens and locks the sales database:

DATABASE sales EXCLUSIVE