Errors in alert log

Posted on 2007-12-06
Last Modified: 2013-12-19
Hi experts,

I have seen some errors in alert log file.

> pleaes refer below alter log contents -
> Mon Dec  3 09:56:26 2007
> Thread 1 advanced to log sequence 75248
>  Current log# 1 seq# 75248 mem# 0: /mtsoradata4/MATRIX/MATRIXredo01.log
>  Current log# 1 seq# 75248 mem# 1: /mtsoradata5/MATRIX/MATRIXredo01a.log
> Mon Dec  3 09:56:26 2007
> ARC1: Evaluating archive   log 2 thread 1 sequence 75247
> ARC1: Beginning to archive log 2 thread 1 sequence 75247
> Creating archive destination LOG_ARCHIVE_DEST_1:
> '/mtsarchive/MATRIX/archive/matrix175247.arc'
> ARC1: Completed archiving  log 2 thread 1 sequence 75247
> Mon Dec  3 09:56:45 2007 *
> Process P006 started up but failed with error = 20* *
> Mon Dec  3 09:56:47 2007* *
> Process P006 started up but failed with error = 20* *
> Mon Dec  3 09:57:03 2007* *
> Process P006 started up but failed with error = 20* *
> Mon Dec  3 09:57:16 2007* *
> Process P006 started up but failed with error = 20* *
> Process P006 started up but failed with error = 20* *
> Mon Dec  3 09:57:50 2007* *
> Process P006 started up but failed with error = 20* *
> Process P006 started up but failed with error = 20*
What are these error?
Please suggest.
Question by:sunitdhake
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
LVL 11

Accepted Solution

Akenathon earned 168 total points
ID: 20418518
Pnnn are parallel query slaves, Oracle tried to start some but could not due to OS error 20. Check your OS log and cross-check what events are logged at that time (/var/syslog, or wherever your flavour of *nix happens to have it)
LVL 48

Assisted Solution

schwertner earned 166 total points
ID: 20419258
There are many reasons for that.
Check the alert log files for detail explanation.
Check the available RAM and disk space.

Assisted Solution

Fayyaz earned 166 total points
ID: 20571466
It relates to parallel Query option. It may be due to the fact that, you have configured your server for parallel server, but there are not enough servers (processors ) that you want to use. For example, in your machine, you have only two processors... but in your queries you are trying to use more than 2 processors using PARALLEL_MAX_SERVERS parameter.

Please check the No. of processors in your machine and value of PARALLEL_MAX_SERVERS parameter.

Expert Comment

ID: 20936939
Forced accept.

Community Support Moderator

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Note: this article covers simple compression. Oracle introduced in version 11g release 2 a new feature called Advanced Compression which is not covered here. General principle of Oracle compression Oracle compression is a way of reducing the d…
This post first appeared at Oracleinaction  ( Anju Garg (Myself). I  will demonstrate that undo for DML’s is stored both in undo tablespace and online redo logs. Then, we will analyze the reaso…
Video by: Steve
Using examples as well as descriptions, step through each of the common simple join types, explaining differences in syntax, differences in expected outputs and showing how the queries run along with the actual outputs based upon a simple set of dem…
This video shows how to copy an entire tablespace from one database to another database using Transportable Tablespace functionality.
Suggested Courses

635 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question