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Recovery always is the most danger and pressure task in DBA jobs.
I suggest everyone should know the following list (part1), before you
Perform the recovery. You will know how (at right time use the right
Commands) to safe your database.
Fundamental Data Structures
o Controlfile
§ Database Info Record (Controlfile)
§ Datafile Record (Controlfile)
§ Thread Record (Controlfile)
§ Logfile Record (Controlfile)
§ Filename Record (Controlfile)
§ Log-History Record (Controlfile)
o Datafile Header
o Logfile Header
o Change Vector
o Redo Record
o System Change Number (SCN)
o Redo Logs
o Thread of Redo
o Redo Byte Address (RBA)
o Checkpoint Structure
o Log History
o Thread Checkpoint Structure
o Database Checkpoint Structure
o Datafile Checkpoint Structure
o Stop SCN
o Checkpoint Counter
o Tablespace-Clean-Stop SCN
o Datafile Offline Range
· Redo Generation
o Atomic Changes
o Write-Ahead Log
o Transaction Commit
o Thread Checkpoint
o Online-Fuzzy Bit
o Datafile Checkpoint
o Log Switch
o Archiving Log Switches
o Thread Open
o Thread Close
o Thread Enable
o Thread Disable |
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