Escalating incremental copies to full copies
BMC AMI Copy
might escalate an incremental copy request to a full copy request under certain conditions.
When you use FULL NO, the setting of the ESCALATE installation option controls whether escalation occurs. When you use FULL AUTO or CHANGELIMIT, BMC AMI Copy ignores ESCALATE. The conditions under which escalation occurs and the impact of the setting of ESCALATE are summarized in the following table. For more information, refer to the pages shown in the table.
BMC AMI Copy action for FULL NO, FULL AUTO, and CHANGELIMIT escalations
Condition causing escalation | Reference | BMC AMI Copy action for FULL AUTO and CHANGELIMIT 1 | BMC AMI Copy action for FULL NO | |
|---|---|---|---|---|
For ESCALATE=NO | For ESCALATE=YES | |||
An incremental copy is prohibited by an entry in the SYSIBM.SYSCOPY table 2 | Escalation always occurs. BMC AMI Copy issues BMC47312 and creates a full copy. | Escalation is not allowed. BMC AMI Copy issues message BMC30576 and return code 8 | Escalation is allowed. BMC AMI Copy issues message BMC30586 and return code 4. | |
The target table space or partition is in COPY-pending status 2 | ||||
The target table space is a 'special case' catalog or directory space 2 | ||||
A specified number of incremental copies has been reached | (Not valid for FULL NO) | |||
A specified percentage of changed pages has been reached 3 | ||||
Point-in-time recovery done within the copy set (related full and incremental copies) and incrementals made with RESETMOD NO or there is only a full copy prior to the point-in-time recovery. | BMC AMI Copy issues BMC47312 and creates a full copy. If RESETMOD NO is coded, READTYPE FULLSCAN is used. | If RESETMOD NO is coded, READTYPE FULLSCAN is used. Otherwise, escalation is not allowed. BMC AMI Copy issues message BMC30576 and return code 8. | If RESETMOD NO is coded, READTYPE FULLSCAN is used. Otherwise, escalation is allowed. BMC AMI Copy issues message BMC30586 and return code 4. | |
A specified minimum number of pages has been reached. | BMC AMI Copy makes a full copy if the space or partition has less than the number of pages specified by MINPAGES. | (Not valid for FULL NO) | ||
A day of the week is specified for making full copies | BMC AMI Copy makes a full copy. FULLDAY specifies the weekday on which a full copy is to be made; the option takes precedence over all other FULL AUTO or CHANGELIMIT options regardless of the changed pages percentages. | (Not valid for FULL NO) | ||
1 The ESCALATE installation option is ignored for FULL AUTO and CHANGELIMIT.
2 If you specify FULL NO, FULL AUTO, or CHANGELIMIT with CUMULATIVE YES, as well as either SHRLEVEL REFERENCE or SHRLEVEL NONE and escalation occurs, any RESETMOD NO specification is automatically changed to RESETMOD YES. If you specify CUMULATIVE NO under the same conditions, a RESETMOD NO specification is not changed.
3 If you specify 0 as the second (highest) value with FULLPCT, escalation will be bypassed for FULLPCT.
This section contains the following topics: