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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 Informix® database servers.
High-Performance Loader User's GuideThe describes how to use the HCL Informix® to load and unload large quantities of data efficiently to or from Informix® databases.
Manage the High-Performance Loader
HPL performanceYou can improve the HPL performance by preparing an environment that is optimized for the particular load or unload job that you are performing.
HPL usage tasks
Alter the schema of a tableWhen you need to alter a table (add, drop, or change the data type of columns), use the Fixed Internal format. In Fixed Internal format, rows are unloaded in HCL Informix® internal format on a column-by-column basis. Thus you can drop, add, or modify columns and still minimize conversion overhead.

Alter the schema of a table

When you need to alter a table (add, drop, or change the data type of columns), use the Fixed Internal format. In Fixed Internal format, rows are unloaded in HCL Informix® internal format on a column-by-column basis. Thus you can drop, add, or modify columns and still minimize conversion overhead.

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