RE: Checkpoint & Redo ratio(High)

Seema:

    Regarding the "Checkpoint not completed." message, make sure you're checkpointing only at redo log switches.

    Check loc_checkpoint_timeout and log_checkpoint_interval values.     If these values are OK and you still keep getting "Checkpoint not completed." messages in the alert.log
you should enlarge your redo logs.

HTH
Diego Cutrone

• Original Message ----- To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> Sent: Thursday, January 17, 2002 4:25 PM

> Hi
> I checked my database and see redo ratio is high.
> I ran the folling query
> select (req.value * 5000) / entries.value "Redo Ratio"
> from v$sysstat req, v$sysstat entries
> where req.name = 'redo log space requests'
> and entries.name = 'redo entries';
> But the
> background checkpoints completed and background checkpoints started are
> having diffrence 1.
> When I do large insert and delete I receive message in alert log
> "Checkpoint not completed." but not regulary.
> My redo log file size is 20m.
> oracle is running on 8.1.6 on unix.
> LEt me know group suggestion.
> Thanks
> -Seema
>
>
>
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-- 
Author: Diego Cutrone
  INET: dcutrone_at_afip.gov.ar

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