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DBA 101 Bootcamp

DBA 101 Bootcamp . New DBA Series Backup 101. Definitions. Archivelogmode Noarchivelogmode Shutdown normal Shutdown immediate Shutdown transactional Shutdown abort. Definitions cont’d . Consistent Inconsistent Control Files Data Files Redo Logs Archive Logs. Definitions cont’d.

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DBA 101 Bootcamp

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  1. DBA 101 Bootcamp New DBA Series Backup 101 Paper #352

  2. Definitions • Archivelogmode • Noarchivelogmode • Shutdown normal • Shutdown immediate • Shutdown transactional • Shutdown abort Paper #352

  3. Definitions cont’d • Consistent • Inconsistent • Control Files • Data Files • Redo Logs • Archive Logs Paper #352

  4. Definitions cont’d • Physical Backup • Logical Backup • RMAN client • Target database • Recovery catalog database • Recovery catalog schema Paper #352

  5. Definitions cont’d • User Managed Backups • Hot Backup • Cold Backup • Flash/Fast recovery area Paper #352

  6. User Managed Backups (Physical) • YOU manage the: • Who • What • Where • When • Why • How Paper #352

  7. User Managed Backups cont’d • Cold (consistent noarchivelogmode) backup • (g)v$datafile • (g)v$controlfile • Shutdown (any mode EXCEPT ABORT) • Copy datafiles and 1 copy of controlfile to “other” location. Paper #352

  8. User Managed Backups cont’d • Cold (consistent archivelogmode) backup • Same as consistent noarchivelogmode AND • (g)v$archived_log • That’s it for COLD backups, any questions before we move on? Paper #352

  9. User Managed Backups cont’d • Hot (inconsistent) backup • Implies archivelogmode • Same as cold consistent archivelogmode • Put tablespaces in backup mode • Copy datafile • Take tablespaces out of backup mode • Switch logfile • Backup controlfile to trace Paper #352

  10. User Managed Backups cont’d • Questions to ponder: • We never backed up redo logs, why? • Why was methodology different for control file backup? • Why did we only backup 1 copy of the control file? Paper #352

  11. User Managed Backups Logical • Export (old exp command, shouldn’t be used anymore) • Data Pump • Whole presentation in itself. • Look at today at 11:45 for a datapump presentation. Paper #352

  12. Recovery Manager (RMAN) Backups • What is RMAN? • How do you access it? • Command line • OEM • What is a repository and do I need one? Paper #352

  13. Recovery Manager (RMAN) Backups cont’d • Connecting • connect catalog userid/password@______ • connect target / or userid/password@_______ Paper #352

  14. Recovery Manager (RMAN) Backups cont’d • Types of backups • Full • Incremental • Archivelog • Control File • Tablespace • Data File Paper #352

  15. Recovery Manager (RMAN) Backups cont’d • Full • Backup database [plus archivelog]; • Incremental • Backup incremental level 0 database; • Backup incremental level 1 database; Paper #352

  16. Recovery Manager (RMAN) Backups cont’d • Archivelog • Backup archivelog all [delete input]; • Controlfile • Backup current controlfile; Paper #352

  17. Recovery Manager (RMAN) Backups cont’d • Tablespace • Backup tablespace tsname; • Datafile • Backup datafile number; • Backup datafile “full path”; Paper #352

  18. Recovery Manager (RMAN) Backups cont’d • Reporting • List backup • Delete backup Paper #352

  19. Recovery Manager (RMAN) Backups cont’d • Questions to ponder: • Why do a controlfile backup AFTER the database backup? • Why can’t I do a backup of my noarchivelog mode database while its running? • Repository or no repository? Paper #352

  20. Pros/Cons • User Managed: • Pros: • You control all of it, control freaks, is this you? • It’s easy to just copy a file from a backup place to its original place • Cons: • You control all of it. • You have to maintain repository of when things were backed up last, etc. Paper #352

  21. Pros/Cons cont’d • RMAN managed: • Pros: • Oracle manages it all, you barely have to think about it • What has been backed up is kept for you automatically. Paper #352

  22. Pros/Cons cont’d • RMAN managed: • Cons: • You control freaks might not like Oracle “taking over it all” • Not just being able to cp a file from a backup location to the original location, you have to get RMAN involved. Paper #352

  23. Take home thought • Backups are important but are useless if they can't be recovered, so test your recovery plan. Paper #352

  24. Demo • Do you have a playground? • If not, why not? You need one • We’ll look at • User managed backup, both hot and cold • Recovery Manager(RMAN) backups full, incremental, tablespace, datafile, archivelog and control file. Paper #352

  25. Contact Info • Joe Testa • Cell: 614-774-3595 • Email: • ceo@teci-it.com • jtesta@gotvideographer.com • testaj3@nationwide.com • Facebook: joseph.s.testa • Twitter: n8xct Paper #352

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