Overview
Prerequisites
Delegates will learn how to
- describe the structure and format of Db2 pagesets
- list all of the major recovery components
- describe the need for Db2 logging to assist in recovery situations
- describe the need for and use of all Db2 utilities
- identify when service aids may be required for use in recovery situations
- describe the additional considerations when recovering catalog and directory tablespaces.
Outline
VSAM file requirements; Creating VSAM files; Page sets; Page set structure; Index structure; Index keys & pointers; Data navigation; RIDS, pointers, and holes; Table row header format; Large Object data; Large Object columns; XML data; XML storage structure names.
Db2 LoggingDb2 logging; Unit Of Recovery; Two phase commit; Logging parameters - size & number of logs; logging parameters - checkpoints; Checkpoint records; Forcing an archive log.
Introduction to Db2 UtilitiesDb2 utilities; Db2 utility packaging; Invoking online utilities - Db2i defaults panel; Invoking online utilities - Db2 utilities panel; Invoking online utilities - dataset names panel; Invoking online utilities - control statements panel; Control statements; LISTDEF control statement; Use of Wild Cards with LISTDEF; TEMPLATE control.
Utilities for Data IntegrityCHECK DATA utility; CHECK INDEX utility; CHECK LOB utility; REPAIR utility.
Utilities for Backup & RecoveryBackup & recovery components; COPY utility; COPY list of objects; COPY using LISTDEF and TEMPLATE; COPYTOCOPY utility; MERGECOPY utility; QUIESCE utility; RECOVER utility; RECOVER list of objects; Recovery involving referential integrity; Recovery and large objects: recover either to current point, recover either to prior point, recover both to prior point; Resetting status codes; XML data recovery; REBUILD INDEX utility; REPORT utility; MODIFY utility; BACKUP SYSTEM utility; RESTORE SYSTEM utility; Restoring to a specified point.
Other Online UtilitiesLOAD utility; REORG TABLESPACE utility; Using shadow copies during REORG; REORG utility - BUILD2 phase; Shadow copies - FASTSWITCH; RUNSTATS utility; STOSPACE utility; UNLOAD utility.
Stand-Alone Utilities (service aids)Invoking stand-alone utilities; DSN1COPY stand-alone utility; DSN1PRNT stand-alone utility; DSNJU004 (print log map) stand-alone utility; DSNJU003 (change log inventory) stand-alone utility; DSN1LOGP stand-alone utility; DSN1CHKR stand-alone utility; DSN1COMP stand-alone utility; DSNJLOGF stand-alone utility; DSNJCNVB stand-alone utility.
Catalog & Directory RecoveryCatalog / Directory recovery implications; Recovery sequence; Catalog & Directory point-in-time recovery; Recovery implications - DEFINE option; Recovery implications - FASTSWITCH; Recovery implications - identity columns & sequences; System-wide points of consistency.
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