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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.
Table performance considerationsSome performance issues are associated with unfragmented tables and table fragments.
Changing tables to improve performanceYou can change tables to improve performance by dropping indexes, attaching or detaching fragments, and altering table definitions. You can also create databases for decision-support applications by unloading and loading tables in OLTP databases.

Changing tables to improve performance

You can change tables to improve performance by dropping indexes, attaching or detaching fragments, and altering table definitions. You can also create databases for decision-support applications by unloading and loading tables in OLTP databases.

You might want to change an existing table for various reasons:

To refresh large decision-support tables with data periodically
To add or drop historical data from a certain time period
To add, drop, or modify columns in large decision-support tables when the need arises for different data analysis