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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.
Administrator's GuideThe HCL OneDB™ Administrator's Guide provides the information required to administer HCL OneDB™.
Disk, memory, and process management
Shared memoryThese topics describe the content of database server shared memory, the factors that determine the sizes of shared-memory areas, and how data moves into and out of shared memory.
Virtual-extension portion of shared memoryThe virtual-extension portion of shared memory contains additional virtual segments and virtual-extension segments.

Virtual-extension portion of shared memory

The virtual-extension portion of shared memory contains additional virtual segments and virtual-extension segments.

Virtual-extension segments contain thread heaps for DataBlade® modules and user-defined routines that run in user-defined virtual processors.

The EXTSHMADD configuration parameter sets the size of virtual-extension segments. The SHMADD and SHMTOTAL configuration parameters apply to the virtual-extension portion of shared memory, just as they do to the other portions of shared memory.

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