Question

Delete log.xml

Asked by: TyghLehman

I have an unruly database that writes massive amounts to the alert logs.   I have no choice but to clean these up somehow.  I have taken measures to copy the results from x$dbgalertext that exclude the error in question to a table.   Then comes the nastiness.

From previous experience you can move or delete the alert log and the database will recreate the log the next time it needs it.

My question is, can you do the same with the new log.xml file in 11g?  Or will this cause some sort of catastrophe?  

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Asked On
2009-09-10 at 13:41:54ID24722849
Tags

Oracle 11g alertlog alert log log.xml file

Topics

Oracle 11.x Database

,

Oracle Database

Participating Experts
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Answers

 

by: MikeOM_DBAPosted on 2009-09-10 at 14:02:40ID: 25304330

It will automatically cycle when it reaches around 10MB.

You can remove the old ones.

 

by: MikeOM_DBAPosted on 2009-09-10 at 14:03:36ID: 25304338

PS: It's just an xml copy of the alert.log

 

by: Pra4444Posted on 2009-09-10 at 14:05:15ID: 25304354

You could just try renaming the current file and see what happens...??

 

by: TyghLehmanPosted on 2009-09-10 at 14:12:08ID: 25304415

MikeOM_DBA:

You say t will automatically cycle when it reaches around 10MB.  Does it rename them?  Where do the go?  Is there documentation on this.  I have not found any.  

So by saying it is just a copy, you mean it is not tied to anything?  or that it will update to blank if I delete the alertlog?  I thought it was written to just like the alert log but in another format, meaning both will be too big in about a month and I will have to delete them (I thought).

I am close to the rename move as suggested by Pra4444 but I don't want to deal with messing up my test users (at the moment anyhow) on something I know so little about.

 

by: mrjoltcolaPosted on 2009-09-10 at 14:19:04ID: 25304512

Since you are unsure, I'll second the vote. MikeOM is correct. You can always either remove or rename alert logs, including the new log.xml, and Oracle will be fine. It will create the new one the next time it flushes a message to disk.

 

by: MikeOM_DBAPosted on 2009-09-10 at 14:29:06ID: 25304667

Check it out:

$ ls -alp
total 54100
drwxrwxr-x  2 oracle dba     4096 Sep  3 08:00 ./
drwxr-x--- 16 oracle dba     4096 Jun 25 08:10 ../
-rw-r-----  1 oracle dba 10485793 Jul 15 11:52 log_1.xml
-rw-r-----  1 oracle dba 10485890 Aug 11 15:21 log_2.xml
-rw-rw----  1 oracle dba 10485765 Aug 15 18:02 log_3.xml
-rw-r-----  1 oracle dba 10485778 Aug 16 03:17 log_4.xml
-rw-r-----  1 oracle dba 10486257 Sep  3 08:00 log_5.xml
-rw-r-----  1 oracle dba      570 Sep  3 08:00 log_6.xml
-rw-r-----  1 oracle dba  2932405 Sep 10 17:00 log.xml

                                              
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by: TyghLehmanPosted on 2009-09-10 at 14:32:08ID: 31627295

Thank you, that is a huge help, as all I will have to worry about is removing log_* and not the current file at all.  

 

by: mrjoltcolaPosted on 2009-09-10 at 14:34:09ID: 25304739

Or:

[oracle@vice alert]$ mv log.xml log.xml.old
[oracle@vice alert]$ ls -l
total 3852
-rw-r----- 1 oracle dba 3936835 Sep 10 16:37 log.xml.old


-- Wait a short moment...

[oracle@vice alert]$ ls -l
total 3856
-rw-r----- 1 oracle dba    1253 Sep 10 17:17 log.xml
-rw-r----- 1 oracle dba 3936835 Sep 10 16:37 log.xml.old

20120131-EE-VQP-002

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