Mirror of Root Dbspace

Mirroring allows fast recovery from a disk failure while the database server remains in online mode. When mirroring is active, the same data is stored on two disks simultaneously. If one disk fails, the data is still available on the other disk. Use the following parameters to describe mirroring of the root dbspace.

Configuration
Parameter

Description

MIRROR

Defines whether mirroring is enabled or disabled.

MIRRORPATH

Specifies the full pathname of the chunk that mirrors the initial chunk of the root dbspace.

You can specify MIRRORPATH in the coserver-specific section to override the global value and provide a different pathname for a specific coserver.

MIRROROFFSET

Specifies the offset into the device that serves as the mirror for the initial root dbspace chunk. For more information, see Specifying an Offset.

You can also specify MIRROROFFSET in the coserver-specific section to override the global value if you want a different offset for a specific coserver.