Lgwr , CKPT - Some Misc. Puzzlers ?

From: VIVEK_SHARMA <VIVEK_SHARMA_at_infosys.com>
Date: Mon, 17 Feb 2003 07:18:42 -0800
Message-ID: <F001.0054F4B0.20030217071842@fatcity.com>

Any Brief info on following :-

Qs lgwr writes the redo log buffer to disk when posted by the smon process under what conditions ?

Qs What is metadata ? How are Changes to metadata managed in the log_buffer ?

Qs Why does the Checkpoint process (CKPT) maintains a heartbeat with the control file at a periodic frequency of every 3 seconds ?

Qs The number of Disks "n" in a stripe volume should preferably be a power of 2 namely (2,4,8,16 and so on) for Oracle Databases . For RAID levels 3, 5 and 7, the number of disks should preferably be n+1 . Why ?

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Author: VIVEK_SHARMA
  INET: VIVEK_SHARMA_at_infosys.com

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