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
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 47

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

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

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…
Checking the Alert Log in AWS RDS Oracle can be a pain through their user interface.  I made a script to download the Alert Log, look for errors, and email me the trace files.  In this article I'll describe what I did and share my script.
Via a live example show how to connect to RMAN, make basic configuration settings changes and then take a backup of a demo database
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…

932 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

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now