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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
Data storageThe database server uses physical units of storage to allocate disk space. It stores data in logical units. Unlike the logical units of storage whose size fluctuates, each of the physical units has a fixed or assigned size that is determined by the disk architecture.
SbspacesAn sbspace is a logical storage unit composed of one or more chunks that store smart large objects.
Storage characteristics of sbspacesAs the database server administrator, you can use the system default values for these storage characteristics, or you can specify them in the -Df tags when you create the sbspace with onspaces -c. You can change these sbspace characteristics with the onspaces -ch option.
Lock modeWhen you create an sbspace, you can specify whether the database server locks the whole smart large object or a range of bytes within a smart large object with the LOCK_MODE tag of the onspaces -c -Df option.

Lock mode

When you create an sbspace, you can specify whether the database server locks the whole smart large object or a range of bytes within a smart large object with the LOCK_MODE tag of the onspaces -c -Df option.

The default is “LOCK_MODE=BLOB?, which means to lock the entire smart large object. For more information, see the locking chapter in your HCL OneDB™ Performance Guide.