Home
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.
Loading and unloading tablesYou can create databases for decision-support applications by periodically loading tables that have been unloaded from active OLTP databases.

Loading and unloading tables

You can create databases for decision-support applications by periodically loading tables that have been unloaded from active OLTP databases.

You can use one or more of the following methods to load large tables quickly:

External tables
Nonlogging tables
The database server provides support to:
- Create nonlogging or logging tables in a logging database.
- Alter a table from nonlogging to logging and vice versa.
The two table types are STANDARD (logging tables) and RAW (nonlogging tables). You can use any loading utility such as dbimport or HPL to load raw tables.
The two table types are STANDARD (logging tables) and RAW (nonlogging tables). You can use any loading utility, such as dbimport, to load raw tables.
High-Performance Loader (HPL)
You can use HPL in express mode to load tables quickly.

The following sections describe: