8i implements lazy checkpointing. The dirty buffers
are flushed to disk but the datafile headers are
updated later and when all the datafile headers are
updated the checkpoint complete is written to the
alert log. So it is not uncommon to checkpoints taking
longer in 8i.
Scott
- Kevin Tsay <ktsay_at_sitesmith.com> wrote:
> Ross:
>
> I believe that RBA is referred to Redo Byte Address
> (Checkpoint RBA).
> The checkpoint RBA is stored in the control file.
> When recovery is required,
> the checkpoint RBA determines the location in the
> redo stream from which to
> start applying recovery.
>
> kevin
>
> -----Original Message-----
> Sent: Tuesday, August 21, 2001 7:21 PM
> To: Multiple recipients of list ORACLE-L
>
>
> smacks of incremental checkpointing...new
> implemented
> in 8i i think....the RBA is a redo block address.
>
> More than that, and you'll have to smoke some DBA
> crack,
> make some guru mushroom tea, hack the internals,
> write a
> book, and then become highly enigmatic and largely
> helpful.
>
> -----Original Message-----
> Sent: Tuesday, August 21, 2001 10:01 PM
> To: Multiple recipients of list ORACLE-L
>
>
> I get the same kind of message, anyone knows what it
> means?
>
> Saludos,
> Veronica Levin Enriquez
> Administrador AIX
> Compañía Cervecera de Nicaragua
>
>
> -----Mensaje original-----
> De: mala singh [mailto:mala_singhm_at_hotmail.com]
> Enviado el: Lunes, 23 de Octubre de 2000 03:01 p.m.
> Para: Multiple recipients of list ORACLE-L
> Asunto: checkpoint message
>
>
> Hi all
>
> I think there is some wait in our
> checkpointing.please correct me.I received
>
> the following message in alert.log file
>
> Beginning log switch checkpoint up to RBA
> [0x55.3.11], SCN: 0x0000.000505b1
>
> Completed checkpoint up to RBA [0x55.3.11], SCN:
> 0x0000.000505b1
>
> Please advice me for correction.
> Thanks in advance.
>
> Mala
> DBA-USA
>
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> Author: mala singh
> INET: mala_singhm_at_hotmail.com
>
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>
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Received on Tue Aug 21 2001 - 22:24:48 CDT
