## PAGESET_PAGENUM 

PAGESET_PAGENUM specifies whether range-partitioned table spaces and the associated partitioned indexes that are created are to use absolute page numbers across partitions, or relative page numbers by default. 

The following values for PAGESET_PAGENUM are acceptable: 

GLYPH<SM590000> ABSOLUTE: Range-partitioned table spaces and associated indexes are created with absolute page numbers, as is the case in Db2 11. 

GLYPH<SM590000> RELATIVE: Range-partitioned table spaces are created so that PGNUM in the page header has no partition number, and the partition number is contained only in the header page for the partition. 

The default value of PAGESET_PAGENUM is ABSOLUTE. 

Note:  It is recommended that the same value is used on all data sharing members to maintain consistency. The use of this value avoid situations, such as there being different page numbering schemes for a table space. This kind of situation can occur by running the same CREATE TABBLESPACE DML without specifying the PAGENUM option on different Db2 members. 

For more information about how relative page numbering works and related performance test results, see 2.5, “Range-partitioned table spaces with relative page numbering ” on page 63. 

## PEER_RECOVERY 

PEER_RECOVERY specifies whether a data sharing member is to participate in data sharing peer recovery. 

The following values for PEER_RECOVERY are acceptable: 

GLYPH<SM590000> NONE: This member is not to participate in peer recovery. Use this option if you configured the z/OS Automatic Recovery Manager (ARM) to restart failed Db2 members. 

GLYPH<SM590000> RECOVER: This member should be recovered by a peer member if it fails. 

GLYPH<SM590000> ASSIST: This member should attempt to start peer recovery for other failed members. When this member detects a failure, it attempts to start a LIGHT(YES) restart for the failed member if it does not start to recover the retained locks. 

GLYPH<SM590000> BOTH: RECOVER and ASSIST options are to be activated for this member. 

The default value for PEER_RECOVERY is NONE. 

For more information about the performance-related test results on peer recovery, see 4.7, “Db2 peer recovery” on page 149. 

## REMOTE_COPY_SW_ACCEL 

REMOTE_COPY_SW_ACCEL specifies whether Db2 uses software to control the remote copy process for active log writes in Peer-to-Peer Remote Copy (PPRC) environments. 

The following values for REMOTE_COPY_SW_ACCEL are acceptable: 

GLYPH<SM590000> DISABLE: The hardware PPRC function is used if available. This setting is appropriate for non-PPRC environments. 

GLYPH<SM590000> ENABLE: The host software is used. This option can improve overall Db2 performance in PPRC environments at the expense of some additional SRB CPU time in the xxxxMSTR address space. z/OS Version 2 Release 1 or later is required to support this function. 

