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тАО08-05-2003 10:30 PM
тАО08-05-2003 10:30 PM
Re: Oracle Redo logs processes
Alex - Thanks very much. The docs (will refer) but the table info is really helpful.
TG - Thanks for the parameter.
Malay - Thanks for the table info.
Twang - Appreciate your comprehensive info.
Steven - Thanks for the table info.
Appreciate again.
TG - Thanks for the parameter.
Malay - Thanks for the table info.
Twang - Appreciate your comprehensive info.
Steven - Thanks for the table info.
Appreciate again.
Co-operation - The biggest chain reaction
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тАО08-05-2003 10:52 PM
тАО08-05-2003 10:52 PM
Re: Oracle Redo logs processes
hi,
to add to the above replies, note that
to know how many archiving proccess running you can run the following query:
select program from v$process where program like '%(ARC_)%'
and also note that there exists a side effect of having more than one archiver.
If automatic archiving is turned on then all of the archiver process will try to archive this logfile, however they will not be able to aquire the lock 'kcrrlt', the lock to protect multiple arch processes from archiving the same logfile.
The failing process process will write to the trace/alert message that it was unable to archive the logfile.
The file is successfully archived by some other process.
hope this helps too!
regards
Yogeeraj
to add to the above replies, note that
to know how many archiving proccess running you can run the following query:
select program from v$process where program like '%(ARC_)%'
and also note that there exists a side effect of having more than one archiver.
If automatic archiving is turned on then all of the archiver process will try to archive this logfile, however they will not be able to aquire the lock 'kcrrlt', the lock to protect multiple arch processes from archiving the same logfile.
The failing process process will write to the trace/alert message that it was unable to archive the logfile.
The file is successfully archived by some other process.
hope this helps too!
regards
Yogeeraj
No person was ever honoured for what he received. Honour has been the reward for what he gave (clavin coolidge)
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тАО08-05-2003 10:58 PM
тАО08-05-2003 10:58 PM
Re: Oracle Redo logs processes
Hi Yogeeraj,
Thanks for the good information. Yes, I've made of note of this.
Cheers, Sanjay
Thanks for the good information. Yes, I've made of note of this.
Cheers, Sanjay
Co-operation - The biggest chain reaction
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тАО08-06-2003 12:01 AM
тАО08-06-2003 12:01 AM
Re: Oracle Redo logs processes
A little opinion add to above, multiple archive processes can be beneficial if you have more than one archive log destination specified. Archive processes are added automatically to balance your workload.
However, if you feel your load is such that more processes are needed before Oracle decides to add them you can use the LOG_ARCHIVE_MAX_PROCESSES parameter to increase the initial number of ARC processes.
Good luck!
twang
However, if you feel your load is such that more processes are needed before Oracle decides to add them you can use the LOG_ARCHIVE_MAX_PROCESSES parameter to increase the initial number of ARC processes.
Good luck!
twang
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