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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.
Performance GuideThe Informix® Performance Guide describes how to configure and operate your HCL Informix® database server to improve overall system throughput and to improve the performance of SQL queries.
Effect of configuration on I/O activityThe configuration of your database server affects I/O activity.
Background I/O activitiesBackground I/O activities do not service SQL requests directly. Many of these activities are essential to maintain database consistency and other aspects of database server operation. However, they create overhead in the CPU and take up I/O bandwidth.
Configuration parameters that affect backup and restoreFour configuration parameters that affect backup and restore on all operating systems also affect background I/O. Additional configuration parameters affect backup and restore on UNIX™.
ontape configuration parameters (UNIX)On UNIX™, LTAPEBLK, LTAPEDEV, LTAPESIZE, TAPEBLK, TAPEDEV, and TAPESIZE are configuration parameters that affect the ontape utility.

ontape configuration parameters (UNIX)

On UNIX™, LTAPEBLK, LTAPEDEV, LTAPESIZE, TAPEBLK, TAPEDEV, and TAPESIZE are configuration parameters that affect the ontape utility.

On UNIX, the LTAPEBLK, LTAPEDEV, and TAPESIZE configuration parameters specify the block size, device, and tape size for logical-log backups made with ontape. The TAPEBLK configuration parameter specifies the block size for database backups made with ontape, onload, and onunload.

TAPEDEV specifies the tape device. TAPESIZE specifies the tape size for these backups.

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