You can use the following configuration parameters to configure the root dbspace:
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 determines the size of each logical-log files. LOGBUFF determines the size of the three logical-log buffers that are in shared memory. For more information on LOGBUFF, see LOGBUFF.
The following configuration parameters determine the location and size of the physical log: