Re: How/when does Oracle know when to start ASMB background process?

From: Tanel Poder <tanel_at_tanelpoder.com>
Date: Fri, 18 Jan 2013 22:05:14 +0200
Message-ID: <CAMHX9JJJoU5BcJfFsDtt9ZQCDFUw8VOm2yGx8kV-WxCup-LLnA_at_mail.gmail.com>

I haven't looked into this, but they could be just started on demand - whenever a client function calls any of the kfk functions requiring ASM connection (like populating the ASM extent pointer array etc). There's a wait event "ASM background starting" for this I think ... Note that ASMB processes also quit after some time period (defined by _asm_wait_time). So we can assume that more processes will be started on demand.

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Tanel Poder
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On Thu, Jan 17, 2013 at 5:26 PM, <Christopher.Taylor2_at_parallon.net> wrote:



> I know this may seem rudimentary to many of you, but another DBA and I

> were discussing this question. (After I recently dorked up an spfile on one

> of my QA clustes - miscalculating sga_max_size)

> So we were talking and I was curious how (or when) does Oracle know to

> start the ASMB background process when starting up from a pfile when no

> spfile is specified in the pfile?

>

> I have to "assume" that because the control files have the "+" notation

> that the instance knows to start the ASMB process?

>

> I've tried verifying this on my own but couldn't put my hands on the

> answer right away.

>

> Regards,

>

> Chris Taylor

> Oracle DBA

> Parallon IT&S

>

>

> --

> http://www.freelists.org/webpage/oracle-l

>

>

>



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Received on Fri Jan 18 2013 - 21:05:14 CET