The database server contains several files called logical logs that record data transactions and administrative information such as checkpoint records and additions and deletions of chunks.
Typical logical-log administration tasks include backing up logical-log files, adding, freeing, and resizing logical-log files, and specifying high-watermarks.
The database server dynamically allocates logical-log files while online to prevent long transactions from hanging the database server.
For more information, see Logging Parameters and Logical Log. For instructions on creating and modifying the logical-log configuration, see Managing Logical-Log Files. For information on backing up the logical log, see the IBM Informix Backup and Restore Guide.
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