Re: Data Guard Question

From: Andrew Kerber <andrew.kerber_at_gmail.com>
Date: Fri, 2 Jul 2021 10:46:53 -0500
Message-ID: <CAJvnOJajPLbUog8CtsJKAusg0DGK5pnW9AX-AxWxkwBQbKbUBA_at_mail.gmail.com>



Well, if they arent available you should be able to do an incremental recovery of the standby.

On Fri, Jul 2, 2021 at 10:42 AM Scott Canaan <srcdco_at_rit.edu> wrote:

> I did find a gap. There are missing logs. I’m trying to get them from
> backup, but it doesn’t appear they are there.
>
>
>
> *Scott Canaan ‘88*
>
> *Sr Database Administrator *Information & Technology Services
> Finance & Administration
>
>
> *Rochester Institute of Technology *o: (585) 475-7886 | f: (585) 475-7520
>
> *srcdco_at_rit.edu <srcdco_at_rit.edu>* | c: (585) 339-8659
>
> *CONFIDENTIALITY NOTE*: The information transmitted, including
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>
> *From:* Sweetser, Joe <JSweetser_at_icat.com>
> *Sent:* Friday, July 2, 2021 11:37 AM
> *To:* nassyambasha_at_gmail.com; Scott Canaan <srcdco_at_rit.edu>
> *Cc:* oracle-l_at_freelists.org
> *Subject:* RE: Data Guard Question
>
>
>
> I have sometimes had to register ‘missing’ log files like:
>
>
>
> alter database register logfile '/full/path/to/arch/logs/arch_1234.arc';
>
>
>
> If there are many files, you can use the RMAN catalog command:
>
>
>
> catalog start with ‘/full/path/to/arch/logs/’;
>
>
>
> Hth,
>
> -joe
>
>
>
>
>
> *From:* oracle-l-bounce_at_freelists.org <oracle-l-bounce_at_freelists.org> *On
> Behalf Of *Nassyam Basha
> *Sent:* Friday, July 2, 2021 9:29 AM
> *To:* srcdco_at_rit.edu
> *Cc:* oracle-l_at_freelists.org
> *Subject:* Re: Data Guard Question
>
>
>
> Hello Scott,
>
>
>
> Are you sure that all required archives are available at standby database?
>
>
>
> > PR00 (PID:29394): GAP - thread 1 sequence *44056-44081*
>
>
>
> Can you verify the sequences are available or not by this query?
>
>
>
> Standby> Select sequence#, name from v$archived_log where sequence# >
> 44055 and sequence# < 44082;
>
>
>
> In short, as per the alert log info it seems few set of archive logs are
> not shipped from primary to standby. The reason could be either data guard
> configuration issue or archives might got deleted at primary.
>
>
>
>
>
> Nassyam on iPhone
>
>
>
> On 2 Jul 2021, at 6:21 PM, Scott Canaan <srcdco_at_rit.edu> wrote:
>
> 
>
> I have a data guard set up where the logs are being shipped to the
> secondary, but not being applied. I’ve verified that all the needed logs
> are there, but it won’t apply them. I don’t know how to get it to start.
>
>
>
> I tried ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;, but that
> did nothing. All I got was an error in the alert log. I tried bouncing
> the database and got the following:
>
>
>
> Completed: ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DISCONNECT
> NODELAY
>
> 2021-07-02T11:13:24.778232-04:00
>
> ALTER SYSTEM SET fal_server='clawbeta' SCOPE=BOTH;
>
> 2021-07-02T11:13:48.721856-04:00
>
> PR00 (PID:29394): FAL: Failed to request gap sequence
>
> PR00 (PID:29394): GAP - thread 1 sequence 44056-44081
>
> PR00 (PID:29394): DBID 2700461164 branch 1043824278
>
> PR00 (PID:29394): FAL: All defined FAL servers have been attempted
>
> PR00 (PID:29394):
> -------------------------------------------------------------------------
>
> PR00 (PID:29394): Check that the CONTROL_FILE_RECORD_KEEP_TIME
> initialization
>
> PR00 (PID:29394): parameter is defined to a value that's sufficiently large
>
> PR00 (PID:29394): enough to maintain adequate log switch information to
> resolve
>
> PR00 (PID:29394): archived redo log gaps.
>
> PR00 (PID:29394):
> -------------------------------------------------------------------------
>
>
>
> Control_file_record_keep_time is 30, which I understand is in days. The
> oldest log to be applied is from June 25, so that’s within the 30 days.
>
>
>
> How do I get the secondary to apply the needed logs?
>
>
>
> *Scott Canaan ‘88*
>
> *Sr Database Administrator *Information & Technology Services
> Finance & Administration
>
>
> *Rochester Institute of Technology *o: (585) 475-7886 | f: (585) 475-7520
>
> *srcdco_at_rit.edu <srcdco_at_rit.edu>* | c: (585) 339-8659
>
> *CONFIDENTIALITY NOTE*: The information transmitted, including
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-- 
Andrew W. Kerber

'If at first you dont succeed, dont take up skydiving.'

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Received on Fri Jul 02 2021 - 17:46:53 CEST

Original text of this message