Configuration parameters that affect critical data

The configuration parameters that configure the root dbspace and the logical and physical logs affect critical data.

You can use the following configuration parameters to configure the root dbspace:
  • ROOTNAME
  • ROOTOFFSET
  • ROOTPATH
  • ROOTSIZE
  • MIRROR
  • MIRRORPATH
  • MIRROROFFSET

These parameters determine the location and size of the initial chunk of the root dbspace and configure mirroring, if any, for that chunk. (If the initial chunk is mirrored, all other chunks in the root dbspace must also be mirrored). Otherwise, these parameters have no major impact on performance.

The following configuration parameters affect the logical logs:
  • LOGSIZE
  • LOGBUFF

The LOGSIZE configuration parameter determines the size of each logical-log files. The LOGBUFF configuration parameter determines the size of the three logical-log buffers that are in shared memory.

The PHYSFILE configuration parameter determines the initial size of the physical log in rootdbs. This configuration parameter is used only when the instance is created.


Copyright© 2019 HCL Technologies Limited