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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.
Administrator's GuideThe HCL OneDB™ Administrator's Guide provides the information required to administer HCL OneDB™.
Disk, memory, and process management
Manage disk spaceYou can use several utilities and tools to manage disk spaces and the data that the database server controls.
Storage optimizationData compression and consolidation processes can minimize the disk space that is used by your data and indexes.Data compression and consolidation processes can minimize the disk space that is used by your data.
CompressionYou can compress and uncompress row data in tables and fragments and simple large objects in dbspaces. You can compress B-tree indexes.You can compress data in tables and table fragments to reduce the amount of disk space. You can also consolidate free space in a table or fragment and you can return this free space to the dbspace. Before you compress data, you can estimate the amount of disk space that you can save.
Tools for moving compressed dataYou can use the High-Performance Loader (HPL) and other HCL OneDB™ data migration utilities to move compressed data between databases.You can use HCL OneDB™ data migration utilities to move compressed data between databases.

Tools for moving compressed data

You can use the High-Performance Loader (HPL) and other HCL OneDB™ data migration utilities to move compressed data between databases.You can use HCL OneDB data migration utilities to move compressed data between databases.

You cannot use the onunload and onload utilities to move compressed data from one database to another. You must uncompress data in compressed tables and fragments before you use the onunload and onload utilities.

The dbexport utility uncompresses compressed data. Therefore, you must recompress the data after you use the dbimport utility to import the data.