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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.
Effect of configuration on I/O activityThe configuration of your database server affects I/O activity.
Environment variables and configuration parameters for the Optical SubsystemThe STAGEBLOB and OPCACHEMAX configuration parameters and the INFORMIXOPCACHE environment variable affect the performance of the Optical Subsystem.
INFORMIXOPCACHE, an Optical Subsystem environment variableThe INFORMIXOPCACHE environment variable sets the size of the memory cache that a given application uses for simple-large-object retrieval.

INFORMIXOPCACHE, an Optical Subsystem environment variable

The INFORMIXOPCACHE environment variable sets the size of the memory cache that a given application uses for simple-large-object retrieval.

If the value of this variable exceeds the maximum that the OPCACHEMAX configuration parameter specifies, OPCACHEMAX is used instead. If INFORMIXOPCACHE is not set in the environment, the cache size is set to OPCACHEMAX by default.