Conflicting PROCESSES values on 10g RAC+Dataguard

Hi peeps,
So i've set up a RAC+Dataguard environment for testing, and have recently encountered ORA-12518 errors; quite a few Google results suggest checking V$RESOURCE_LIMITS for any resource problems. Upon checking i noticed that the MAX_UTILIZATION for resource PROCESSES is set to 71, with CURRENT_UTILIZATION set to 70;i found this strange 'coz i specifically increased the PROCESSES parameter to 300 when i set up the db; i ran SHOW PARAMETER PROCESSES and verified it was set to 300.
Shouldn't i be getting the same values?
tia

Hello badkuk,
The max_utilization column means the greater value of this resource since last instance startup. See it on http://download.oracle.com/docs/cd/B19306_01/server.102/b14237/dynviews_2050.htm#REFRN30206
Also see the description of error message at http://ora-12518.ora-code.com
I think the root cause of this error was not processes parameter.
Take a look on Metalink note ID 556428.1
*"In general ORA-12518 occurs if there is a resource problem , may be on the listener side or on the Database server. It indicates a condition where the process is not able to make any more memory allocations either due to non-availability of resource or the process has reached the 32 bit (VM Size) limit"*
Best regards,
Rodrigo Mufalani
http://www.mrdba.com.br/mufalani

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answered by ssolbach
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Sebastian
reference:-
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Seeking a solid reccomendation concerning 10g RAC implementation.

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please find answers that i know for some questions.
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=> do not suggest thin provisioning for production.
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8.) Can I utilize 1 node to run ETL during production hours without drastically affecting database performance?
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=> attend a 5 day course from Oracle. install RAC on own and play with it.
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=> did not compare, though installed 11g.
11.) Are there any studies on the performance advantages/disadvantages of running Oracle 10g on Windows vs. Solaris (or any Unix)?
=> running on windows? please do not. used on linux a lot. pretty stable and solid. recommend to go with 10.2.0.4 or higher.
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Hi Laurent,
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Edited by: rgeier on Sep 1, 2009 3:51 PM

CRS-0210: Could not find resource while start ASM on 10G RAC

Dear All
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ORA-03113: end-of-file on communication channel
select value from v$parameter where name='instance_type'
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TYPE=application
TARGET=ONLINE
STATE=ONLINE on bfhxx-sql012
NAME=ora.bfhxx-sql012.ons
TYPE=application
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It all depends on what your mapping problem was and what you did to resolve it. Here are a couple of things you could try:
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Always a good practise to take a backup of status quo before you restore from the backups.
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Oracle 10g rac installation on IBM power server

Dear Gurus,
I am installing Oracle 10g RAC on IBM power server but while running CRS getting the following errors. Please help to resolve this issue.
OUTPUT from Installation log:
INFO: Start output from spawned process:
INFO: INFO:
INFO: /oracle/app/oracle/product/crs/bin/genclntsh
INFO: /usr/bin/ld: cannot find -lxl
INFO: collect2: ld returned 1 exit status
INFO: genclntsh: Failed to link libclntsh.so.10.1
INFO: make:
INFO: *** [client_sharedlib] Error 1
INFO: End output from spawned process.
INFO: INFO: Exception thrown from action: make
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SYSTEM:
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Those errors remind me on errors I encountered when I was trying to do installation that was not certified,
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In the meantime , visit metalink and read document [ID 460969.1] , */usr/bin/ld: Cannot Find -lxml10, Genclntsh: Failed To Link Libclntsh.so.10.1*

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Hello all,
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PRIF-50: duplicate interface is given in the input
PRIF-50: duplicate interface is given in the input
PRIF-50: duplicate interface is given in the input
Question:
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Output /etc/hosts
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
172.18.253.48 eu0266.[company].net cfmaster
172.16.128.11 eu0200.[company].net eu0200
172.16.128.12 eu0201.[company].net eu0201
172.16.128.13 eu0202.[company].net eu0202
172.16.128.14 eu0203.[company].net eu0203
172.18.13.11 eu0200m.[company].net eu0200m
172.18.13.12 eu0201m.[company].net eu0201m
172.18.13.13 eu0202m.[company].net eu0202m
172.18.13.14 eu0203m.[company].net eu0203m
# Private section
172.17.1.11 eu0200-priv.[company].net eu0200-priv
172.17.1.12 eu0201-priv.[company].net eu0201-priv
172.17.1.13 eu0202-priv.[company].net eu0202-priv
172.17.1.14 eu0203-priv.[company].net eu0203-priv
# Virtual section
172.16.128.16 eu0200-vip.[company].net eu0200-vip
172.16.128.17 eu0201-vip.l[company].net eu0201-vip
172.16.128.18 eu0202-vip.[company].net eu0202-vip
172.16.128.19 eu0203-vip.[company].net eu0203-vip
Output install log:
Checking existence of VIP node application (required)
Check failed.
Check failed on nodes:
eu0203,eu0202,eu0201,eu0200
Checking existence of ONS node application (optional)
Check ignored.
Checking existence of GSD node application (optional)
Check ignored.
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INFO: Configuration assistant "Oracle Cluster Verification Utility" failed
*** Starting OUICA ***
Oracle Home set to /opt/[company]/oracle/crs
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Regards

Tads wrote:
Hi all,
I have a question about Oracle RAC and network interface.
We're using Oracle 10gR2 RAC with two nodes on Linux Red Hat.
Let's assume that the public network interface goes down.
I would like to know what happens with existing connections
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You should spend some time in a test lab where you can test this stuff for yourself. Read the documentation and there are tons of sites out there that purport to have all of your RAC/TAF/FAN/FAF questions. - I would read and trust the documentation first.
>
I know that the listener goes down and any other connections is allowed.
Thank you very much!!!!

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Message was edited by:
MEXMAN

You know its not certified?
My first thought when I read the subject of this thread, and before reading what you posted, is that you've either done no research on RAC or didn't understand what you've read.
You can create a RAC cluster using any operating system certified by Oracle.
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Never mind ....... I had already figured it out .....

What could be the disadvantage of the "AUTO_SPACE_ADVISOR_JOB" in 10g RAC?

Hi, all.
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The 2 node RAC database seems to be experiencing performance degrade
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GATHER_STATS_JOB.
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Thanks and Regards.

Dear Justin.
Thanks for your reply.
1) What is the magnitude of the waits you're seeing? Over what time frame?
--> I found the above wait events in the top 5 wait event section from AWR report.
The AWR snapshot time frame is one hour.
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--> I applogize for insufficient information. I took "system state dump" and "hang analyze" at the time of database hang.
--> It is hard for me to understand the system dump file. I reported those files to Oracle Support, but no answer was returned now.
--> As you said, it may be caused by different issues. I will try to investigate other factors.
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--> I investigated AWR reports during the period of database hang. I found the above wait events with gather_database_stats in common. That is all why I suspect "gather_database_stats" job.
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--> I am considering gathering statistics manually (only application schema, not all database objects)
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--> I applogize for insufficient explanation. I mean the problems occur when "gather_database_stats" job takes statistics of "AWR snapshot data",
because application data is very very small, only 10 Mega and 28 tables.
Currently, we have deployed only 1 % of the entire application.
● This is the first time I manage a RAC database. I think a RAC database is something different from a single database.
I do not think the same problem could occur in a single database.
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Best Regards.

Oracle 10g RAC to 11g RAC Upgrade on Solaris

Hi,
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a) Do a rolling upgrade of Oracle from 10g to 11g. Then take down individual nodes and upgrade the Solaris OS from 9 to 10 and bring them up back into the cluster. Is there any known issues taking this path? Is a rolling upgrade like this possible?Hi,
first of all i would not change several components (OS, database version) at a time. My recommendation is to make small steps and start with the operating system first. Seconds recommendation is to test and test everything in your dev or test environment prior doing the upgrades in the productive environment. Trust me: You will face problems :-) So you better try it beforehand!
b) Do an upgrade of the Solaris OS from 9 to 10 on each node and then bring them back up? Is this practical? Does Oracle allow different versions of OS running on different nodes?As far i know you can run different operating system versions on different nodes if they are supported (Solaris 9 and 10 are).
Ronny Egner
My blog: http://ronnyegner.wordpress.com

Putting Oracle Apps 11i on 10g RAC using VMware

Hello All,
I am building a Oracle Applications 11i on 10g RAC, using VMware..Since there aren't any docs I could find on internet explaining how to do this, I have come up with my own. I have combined the MEtalink doc:362135.1 and the docs describing building a 10gRAC "database" using VMware..I want to know if the below process is good enough to get the required results:
Steps:
-Install VMware on HOST m/c
-Configure 1st virtual m/c, say RAC1
-Install RHEL on RAC1
-Install 11i with 9i database on the local SCSI bus- SCSI 0:0
-Install VMware client tools
-Create a new ethernet adapter(for private interconnect) on RAC1
-Create shared disks on RAC1
-Partition the disks
-Add the disks as RAW devices in /etc/rawdevices
-Clone RAC1 to a new virtual m/c,say RAC2
-Delete the 11i apps directories from its local SCSI bus..since these would be redundant on RAC2
-Install Clusterware s/w on RAC1 using the same oraInventory that is used by the Applications 11i installation-
-Install the 10g DB software and create ASM instances using dbca
-Install Database componenets from 10g companion CD
-Upgrade CRS abd DB s/w to 10.2.0.4
-Upgrade the 9i database to 10g using dbua from the 10g ORACLE_HOME
-Convert the newly upgraded 10g databse to RAC using the rconfig tool
-Post migration steps for RAC
-Enable AutoConfig on the Applications Database tier
- Follow the "Establish Applications Environment for RAC" section from Doc:362135.1
-Configure PArallel Concurrent Processing(PCP)
Thanks,
Sandeep

(Considering that there are only 2 nodes the scenario the steps would be as follows:
1. Install RAC using the steps provided at the link:
http://oracle-base.com/articles/10g/OracleDB10gR2RACInstallationOnCentos4UsingVMware.php
2.On RAC1 create a single instance of Oracle 11i (Both DB and Apps are on the same node)
3. Follow the steps outlined in the Note:362135.1
One thing to note is that the steps are the same whether the nodes are real or virtual.

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