Backup requirements

About this task

Backup cycle for point-of-failure DRP defines the backup intervals required to ensure you can successfully restore to point-of-failure. Some data sets need only be backed up weekly; others are required to be backed up after every CP or JS backup. N/A shows that a backup is not applicable for DRP purposes.

Table 1. Backup cycle for point-of-failure DRP
ddname Format Defines Backup interval
EQQADDS VSAM Applications and JCL variables Daily
EQQCKPT PS Checkpoint data set N/A
EQQCP1DS VSAM Current-plan-1 data set N/A
EQQCP2DS VSAM Current-plan-2 data set N/A
EQQCXDS VSAM Current-plan-extension data set N/A
EQQDLnn PS Dual job-tracking-log data set N/A (already in secondary)
EQQEVDS PS Event data set for the event-writer task N/A
EQQEVDnn PS Event data set for the event-reader task N/A
EQQHTTP0 PS Event data set for end-to-end scheduling with z-centric capabilities N/A
EQQINCWK PS JCC incident work file N/A
EQQJBLIB PDS JCL library data set Minimum weekly, daily if high activity
EQQJCLIB PDS JCC message-table data set Minimum weekly, N/A if same as primary
EQQJS1DS VSAM JCL-repository-1 data set See note 1
EQQJS2DS VSAM JCL-repository-2 data set See note 1
EQQJTARC PS Job-tracking-archive data set See note 2
EQQJTnn PS Job-tracking-log data set N/A
EQQLDDS VSAM Work data set for long-term-plan batch jobs See note 3
EQQLTBKP VSAM Long-term plan backup See note 3
EQQLTDS VSAM Long-term plan data set See note 3
EQQMLIB PDS Message library N/A (already in secondary)
EQQMLOG PS Message log N/A
EQQNCPDS VSAM New-current-plan data set After every NCP
EQQNCXDS VSAM New-current-plan extension data set After every NCP
EQQOIDS VSAM Operator-instruction database Minimum weekly, daily if high activity
EQQPARM PDS

Initialization-statement-parameter library

Initialization-statement- parameter library

 Minimum weekly, daily if high activity
EQQPRLIB PDS Automatic-recovery-procedure library Minimum weekly, daily if high activity
EQQRDDS VSAM Special resource descriptions Daily
EQQSIDS VSAM ETT criteria and configuration data Minimum weekly, daily if high activity
EQQSTC PDS Started-task-submit data set N/A
EQQWSDS VSAM Workstation, calendar, and period definitions Minimum weekly, daily if high activity
STEPLIB PDS HCL Workload Automation for Z load-module library N/A, already in secondary
Note:
  1. EQQJSnDS: after every JS copy is complete, make a backup of the inactive file. HCL Workload Automation for Z issues message EQQN015I to show when the copy is complete and to identify the inactive JS ddname. You should update the message to include WTO=YES to trigger the backup using NetView®.
  2. EQQJTARC: after every CP backup, the contents of the current job-tracking log are copied to this data set. Take the backup after message EQQN090I is issued to show that the JT data is copied to the archive data set.
  3. When an LTP or daily-planning batch job runs a copy of the LTP is written to the EQQLTBKP data set. Use EQQLTBKP for your DRP backup to ensure that no updates have occurred before the backup is taken. Perform the DRP backup after every NCP. The contents of the LT, LD and LB data sets must be kept in synch in case a new LTP needs to be re-created from scratch.
  4. HCL Workload Automation for Z issues message EQQN057I to show that a CP backup is complete. You should update the message to include WTO=YES so you can use NetView® to trigger DRP data set backups. Message EQQN051I shows why the CP backup occurred. The DRP backups can be triggered when the scheduler issues message EQQN057I following message EQQN051I with reason "DP END". In fact, now, EQQLTBKP, EQQNCPDS and EQQNCXDS are all synchronized with the other scheduler data.