Time synchoronization while configuring Oracle 10g RAC

I am installing Oracle 10g RAC on 3 EHEL5.0 systems. The problem is the time can not be synchoronized although I had already enaled the Network Time Protocol and let all the related servers to be synchoronized with the same NTP server.
I want to know why the time cannot be synchoronized on different servers?

Time synchronization with RAC is critical. Oracle will refuse to install if you do not perform this step.
You have three choices. The more risky one is to configure access to an external time server. I don't like this because it does create a path between my data server and the internet. The second is to build a time server in our data center that you reference. This is the best option as you can, and should, use that server for synchronize everything which is a great help with replication. The third choice is to arbitrarily choose one node and synchronize the other nodes with it. The downside is that if you lose that node you are at risk.
There are plenty of instructions on how to create a time server on the internet but no matter which choice you make ... you will need root privs on operating system to configure it.

Similar Messages

How to configure Oracle 10g RAC on windown sever 2003

hi all
plz tell me
how to configure Oracle 10g RAC on windown sever 2003 can any body help me , give be any link
plz it is very necessary for me
Regards

Hello,
There are a good doc written by Philip Newlan at www.jobcestbon.com/oracle/RacOnWindows.pdf
Regards,
Rodrigo Mufalani
http://mufalani.blogspot.com

Having problems in ocfs2 while installing oracle 10g rac on linux as 4

this is the frist time i am try to install oracle rac based on three PCs after installing ocfs2 when i try to configure nodes through console i see the following msg "Could not start cluster stack .this must be resolved before any OCFS2 file system can be mounted "

Please check the user guide
http://oss.oracle.com/projects/ocfs2/dist/documentation/01-cluster_start_stop.pdf
Regards
Jason

DO I need SFRAC for Oracle 10g RAC on Sun Solaris

My platform is SUN Solaris 10 64 bit on v490 server. On the backend side, we are using EMC CX500 storage. We will use Veritas File system and Veritas CFS.
I would like to ask, Do I must need SFRAC to configure Oracle 10g RAC or Can I just use only Oracle CRS. I do not want to use ASM.
Please advise
Thanks,
Sam..

The VCFS usually requires a Veritas Cluster, thus you would have to use the product combination that is bundled as SFRAC as mentioned before. Metalink in addition says:
10 10gR2 64-bit Veritas Storage Foundation for Oracle RAC 5.0 Certified
There is one exception to this rule: Linux.
Veritas and Oracle support a standalone version of the Veritas Cluster Files System (and only this component) on Linux. This does not hold true for Solaris.
Concluding, if you want to use the VCFS you would need to get a VCS, which then basically means using SFRAC.
However, in this case, as mentioned before, you would not need ASM.

Oracle database not starting up in oracle 10g RAC

Hi!
Recently I came across one problem with one node oracle 10g RAC.When the Oracle database is started,while opening it is giving ORA-03113:End of file on communication channel error.When I saw the the alert trace file and other trace files I found Disk group is exhausted error and it is not able to create .dbf files.Actually it is not a production server and I gave archive log destination in SAN.Even the spfile(content of init_database.ora) is in SAN..
I tried Asmcmd utility to delete the archive log files.As the oracle is not available I am not able to asmcmd prompt.
How to change the destination of archive log and to remove the old archive log files(as it is a testing environment we can remove) from SAN?Please let me know.
Thanks & Regards
Srikanth MVS

keithrust wrote:
On VMware there's a known issue with Oracle databases on a Windows client not starting up properly all the time and a manual startup using oradim -start -sid <whatever> is required to get it fully running. Hmmm, doing it several time, and never seen such issue. Which "known issue" and by who are you talking about ?
I created a brand new Oracle VM Windows 2003 32-bit server, installed the Oracle drivers for paravirtualization, and whammo, the problem is still hereI'm sure, you miss something somewhere in the config. Right now, you're on supported configuration, you could either raise a SR to the support, or get help from your peer on Oracle Database General forum.
Ah, but it's not a Windows issue. On a non-VM Windows box the database starts just fine all the time. Again, this is a known issue acknowledged by Oracle on the VMware side, I'm just surprised it exists on the Oracle VM side.Again, give more details about this "known issue". Never heard about that, eventhough I've been around for years.
I was afraid you were going to ask that. I'll have to search for it again, but I think you can do the same as well....Well, I doubt you could find a Metalink note about Oracle on VMWare. So far, Oracle has always refused to support database on OS virtualized on VMWare (or any VM software other than Oracle VM). Based on that, you could be sure, your "known issue" is not an issue on Oracle VM.
If you want more help, again, give more details about your issue.
Nicolas.

Oracle 10g RAC installation on HP-UX 11.31 for SAP ERP 6.04

Dear experts,
We are trying to install SAP ERP 6.0 EHP4 with Oracle 10g RAC on HP-UX 11.31. Please note that, We are using VERITAS cluster filesystem (CFS) for this purpose and not HP-UX ServiceGuard ClusterFileSystem.
*As per SAP procedure, we have installaed plain plain SAP system with single instance Oracle (ref: Configuration of SAP NetWeaver for Oracle Database 10gRAC guide). Now we are first trying to install Oracle Clusterware (CRS) and then we will install Oracle RAC software. Is this procedure right?*
Which file (and its path) we have to use for CRS installation and its patch? Is it runInstaller under /oracle/stage/102_64/clusterware? With this file we can install CRS 10.2.0.1. Similarly for Oracle RAC, which files we are supposed to use, i.e for installation and patch upgrade?
Also can we use clusterware package available from Oracle directly in the SAP environment?
We tried to install CRS with runInstaller while running Configuration Assistant after root.sh script.
The following commands are failing in Configuration Assistant:
/oracle/CRS/102_64/bin/racgons add_config erpprdd1:4948 erpprdd2:4948
/oracle/CRS/102_64/bin/oifcfg setif -global lan1/20.20.20.0:cluster_interconnect lan0/192.168.3.0:public
/oracle/CRS/102_64/bin/cluvfy stage -post crsinst -n erpprdd1,erpprdd2
1st command does not give any output if run manually.
2nd commands o/p: PRIF-12: failed to initialize cluster support services
3rd commands fails in every check
Please suggest the solution and expecting answers to the above mentioned questions.
Thanks & Regards,
Tejas

>
Charles Yu wrote:
> Q1: Oracle RAC with 9.2.x on HP-UX?
> A: For HA environment, cluster software is: MC/SG on HP-UX 11.31; there are optional components of MC/SG for supporting Oracle RAC and SAP application. I was confused that I could not find the installation guide regarding 4.6C on MC/SG HA environment of HP-UX.
> Charles
Relevant docs for Service Guard (SG) cluster are available at http://docs.hp.com. Hope you have checked for the suport of oracle 92x on HP-UX 11.31
>
Charles Yu wrote:
> Q2: Any reason why you don't use a supported database version?
> A: Actually, in order to avoiding the the risk of database upgrade and minimizing the migration risk, top level has decided that keeping the same Oracle version. Indeed, we don't plan the migration of application. On the other hand, it is complicated to do the assessment for application migration.
> Charles
You can go for combined os migration and db release upgrade also at a stretch with the same downtime.

Oracle 10G RAC - Public & Heartbeat on 1 NIC

Hello all,
actually I am installing Oracle 10G RAC on rhel 4 (4 node cluster). But the Cluster Verification Utility aborts with errors. I checked the configToolAllCommands and tried to run the failed commands manually:
#/opt/oracle/crs/bin/oifcfg setif -global eth0.100/172.18.0.0:cluster_interconnect eth0.728/172.16.128.0:public eth0.498/172.17.1.0:cluster_interconnect
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:
Is it possible to put Public & Heartbeat on one NIC (eth0.728 & eth0.498)
If not is their any workaround for that issue?
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.
Post-check for cluster services setup was unsuccessful on all the nodes.
Command = /opt/[company]/oracle/crs/bin/cluvfy has failed
INFO: Configuration assistant "Oracle Cluster Verification Utility" failed
*** Starting OUICA ***
Oracle Home set to /opt/[company]/oracle/crs
Configuration directory is set to /opt/[company]/oracle/crs/cfgtoollogs. All xml files under the directory will be processed
INFO: The "/opt/[company]/oracle/crs/cfgtoollogs/configToolFailedCommands" script contains all commands that failed, were skipped or were cancelled. This file may be used to run these configuration assistants outside of OUI. Note that you may have to update this script with passwords (if any) before executing the same.
SEVERE: OUI-25031:Some of the configuration assistants failed. It is strongly recommended that you retry the configuration assistants at this time. Not successfully running any "Recommended" assistants means your system will not be correctly configured.
1. Check the Details panel on the Configuration Assistant Screen to see the errors resulting in the failures.
2. Fix the errors causing these failures.
3. Select the failed assistants and click the 'Retry' button to retry them.
Thanks in advance for your help!
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
on node with network interface with problems.
Are connections frozen, actives?
Can the users continue to use theses existing connections using the another node of RAC?If the interface is down? what do you think? All connections to this node will die. How does your application handle fail-over, does it attempt to reconnect or just have a complete application failure?
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!!!!

An issue while installing oracle 10g express edition on Ubuntu 10.04-64bit

Hi,
I'm running into an issue while installing oracle 10g express edition on my Ubuntu 10.04-64 bit installed machine using oracle-xe-universal_10.2.0.1-1.0_i386.deb package. The issue actually came up when I was trying to reinstall the package after uninstalling it due to some problem I had with my login credentials. To elaborate further on it, the /etc/init.d/oracle-xe script does not get created when I execute the debian package and thus i'm unable to configure the required credentials and stuff after the installation. I doubt whether this has something to do with the procedure I followed when uninstalling the previous package it. But what I did was just what's mentioned in the following [http://download.oracle.com/docs/cd/B25329_01/doc/install.102/b25144/toc.htm] user guide published by oracle.
Another important clue would be, the platform of my machine is amd64bit although I'm dealing with an installation package preferred for i386. But I believe it's the only thing available in the oracle software download section. Hence I had to use the --force-architecture option to install it. But after reading some post published on this forum, I've figured out that it does not affect the usual execution of the software. Anyway, I would greatly appreciate some help on this matter.
[1] http://download.oracle.com/docs/cd/B25329_01/doc/install.102/b25144/toc.htm
Thanks and Regards,
Prabath Abeysekara
Edited by: 829281 on Jan 18, 2011 7:52 PM

Hi,
Finally I've managed to find a solution for this issue. Thanks a lot for all the replies.
Here's how I got rid of it.
Addressing all the facts one by one,
1.The problem of not getting the /etc/init.d/oracle-xe script generated was avoided
by removing all the configuration files that were previously created while installing
the product. The following command can be used to accomplish that task.
*$ dpkg --purge oracle-xe*
2.Next, Initially the password I used during the configuration process was "admin".
Although I tried a couple of times installing the product providing the aforementioned
password, the web UI kept prompting "Invalid Credentials" message not allowing me
to login. But, this particular issue could be avoided by giving some other simple
password.
Finally, got it working and once again thanks a bunch for taking the burden of
replying this thread.
Cheers,
Prabath

Problem with Oracle 10g RAC VIP network setting at Solaris 9

Dear All,
I have tried to set up a Oracle 10g RAC Release 2.
With OS solaris 9, and 2 nodes.
The nodes setting as the following:
nodes 1:
Public address: 172.16.0.121
Private address: 192.168.0.121, 192.168.1.121 (dual path for heart beat)
nodes 2:
Public address: 172.16.0.122
Private address: 192.168.0.122, 192.168.1.122
And i have assigned two IP adress 172.16.0.131, 172.16.0.132 as the VIP address for the
RAC.
And the following is the /etc/hosts file:
root@shk01 # cat /etc/hosts
# Internet host table
127.0.0.1 localhost
# public address
172.16.0.121 shk01 loghost
172.16.0.122 shk02
# heart beat
192.168.0.121 shk01-priv1
192.168.1.121 shk01-priv2
192.168.0.122 shk02-priv1
192.168.1.122 shk02-priv2
# VIP address
172.16.1.131 vip-shk01
172.16.1.132 vip-shk02
But when i run the command "$ ./runcluvfy.sh comp nodecon -n shk01,shk02 -verbose"
it shows the error:
ERROR:
Could not find a suitable set of interfaces for VIPs.
Result: Node connectivity check failed.
I did try to add the VIP address on bge0:1, as i using bge0 for the public address.
Both nodes i did using the same interface name for it.
Anyone have idea for me to check out the error?
Also, I have other question about the raw device.
As there is option for setting for ASM or raw device. If choosing raw device, does it mean that it just need to
format the storage disk but without newfs it? And then the Oracle program will able to handle it?
Thanks,
Xentar

You don't seem to state categorically that you are using Solaris Cluster, so I'll assume it since this is mainly a forum about Solaris Cluster (and IMHO, Solaris Cluster with Clusterware is better than Clusterware on its own).
Clusterware has to see the same device names from all cluster nodes. This is why Solaris Cluster (SC) is a positive benefit over Clusterware because SC provides an automatically managed, consistent name space. Clusterware on its own forces you to manage either the symbolic links (or worse mknods) to create a consistent namespace!
So, given the SC consistent namespace you simple add the raw devices into the ASM configuration, i.e. /dev/did/rdsk/dXsY. If you are using Solaris Volume Manager, you would use /dev/md/<setname>/rdsk/dXXX and if you were using CVM/VxVM you would use /dev/vx/rdsk/<dg_name>/<dev_name>.
Of course, if you genuinely are using Clusterware on its own, then you have somewhat of a management issue! ... time to think about installing SC?
Tim
---

Solaris 10 and Hitachi LUN mapping with Oracle 10g RAC and ASM?

Hi all,
I am working on an Oracle 10g RAC and ASM installation with Sun E6900 servers attached to a Hitachi SAN for shared storage with Sun Solaris 10 as the server OS. We are using Oracle 10g Release 2 (10.2.0.3) RAC clusterware
for the clustering software and raw devices for shared storage and Veritas VxFs 4.1 filesystem.
My question is this:
How do I map the raw devices and LUNs on the Hitachi SAN to Solaris 10 OS and Oracle 10g RAC ASM?
I am aware that with an Oracle 10g RAC and ASM instance, one needs to configure the ASM instance initialization parameter file to set the asm_diskstring setting to recognize the LUNs that are presented to the host.
I know that Sun Solaris 10 uses /dev/rdsk/CwTxDySz naming convention at the OS level for disks. However, how would I map this to Oracle 10g ASM settings?
I cannot find this critical piece of information ANYWHERE!!!!
Thanks for your help!

You don't seem to state categorically that you are using Solaris Cluster, so I'll assume it since this is mainly a forum about Solaris Cluster (and IMHO, Solaris Cluster with Clusterware is better than Clusterware on its own).
Clusterware has to see the same device names from all cluster nodes. This is why Solaris Cluster (SC) is a positive benefit over Clusterware because SC provides an automatically managed, consistent name space. Clusterware on its own forces you to manage either the symbolic links (or worse mknods) to create a consistent namespace!
So, given the SC consistent namespace you simple add the raw devices into the ASM configuration, i.e. /dev/did/rdsk/dXsY. If you are using Solaris Volume Manager, you would use /dev/md/<setname>/rdsk/dXXX and if you were using CVM/VxVM you would use /dev/vx/rdsk/<dg_name>/<dev_name>.
Of course, if you genuinely are using Clusterware on its own, then you have somewhat of a management issue! ... time to think about installing SC?
Tim
---

Does managing Oracle 10g RAC with ASM require full root access?

We currently have three entirely separate support areas, Unix, Storage and DBA. We're now considering using Oracle 10g RAC with ASM and as part of the assessment trying to work out if we can still draw similar support boundaries. I know that installing RAC and configuring ASM requires root access but will DBA continue to need root access to manage & support RAC? If so, does anyone know if the commands they need can be RBAC'd or if we just need to share root access going forwards. I've had a look at a number of docs including http://download.oracle.com/docs/cd/B19306_01/rac.102/b14197/toc.htm. which is fairly informative but none of them seem to mention the requirement for root access on Solaris. I'm guessing they just assume that it's available, but that's not generally the case in our environment.
All advice / info welcome!

I would have thought that the only reason you would need root access once RAC and ASM had been set up would be to add more disks to the ASM configuration. This would be needed to change the ownership on the raw LUNs or to make additions to metasets (SVM/Oban) or diskgroups (VxVM/CVM). Beyond that, I can't imagine needing root access.
I'm sure others will chime in if they can think of other reasons!
Regards,
Tim
Edited by: Tim.Read on Jun 3, 2008 2:25 AM

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
Exception Name: MakefileException
Exception String: Error in invoking target 'client_sharedlib' of makefile '/oracle/app/oracle/product/crs/network/lib/ins_net_client.mk'. See '/oracle/app/oracle/oraInventory/logs/installActions2011-12-26_04-40-48PM.log' for details.
Exception Severity: 1
INFO: Exception handling set to prompt user with options to Retry Ignore
SYSTEM:
IBM power server
Linux 5.3
I have already tried changing ORACLE_HOME,CRS_HOME,LD_LIBRARY_PATH but nothing worked.
Regards,
Prajash

Those errors remind me on errors I encountered when I was trying to do installation that was not certified,
so try to check if installation you are doing is actually supported.
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*

Oracle 10g RAC

Hi All,
I am a research student currently struggling to install Oracle 10g RAC on Windows OS.What i understand about a Oracle RAC database system is that it involves a configuration of multiple hosts or servers joined together with a clustering software and accessing the shared disk structures.What i also understand is that i need a CRS provided by Oracle for a Windows or Linux based RAC installation.
What i don't understand is for a Two node RAC system do i need a Third machine which has the shared storage device.If yes do i have to install a copy of Oracle 10g Enterprise Edition and CRS on the shared storage device moreover do i need to install a copy of Oracle 10g Enterprise edition on each of the nodes or just the clusterware is enough.

Hi Salil
No, you do not need a third machine. You can even setup RAC as a single node on one machine! What you do need is to have some sort of cluster aware file system. Try looking at OCFS on Windows in your case.
If you are interested in a Linux example please have a look at the examples at http://ocpdba.net/oracle9i_rac/cheaprac.html and http://ocpdba.net/oracle10g_rac for an OCFS implementation I am working on.
regards,
Ahbaid

Oracle 10g RAC on Windows

Installed Oracle 10g RAC on Windows... Everything was
working fine, now when I install CRS it completed at 100% and then in the configuration it gives error
INFO: exitonly tools to be excuted passed: 0
INFO: Starting to execute configuration assistants
INFO: Command = C:\WINDOWS\system32\cmd /c call C:\oracle\product\10.2.0\crs/install/crssetup.config.bat
PROT-1: Failed to initialize ocrconfig
Step 1: checking status of CRS cluster
Step 2: creating directories (C:\oracle\product\10.2.0\crs)
Step 3: configuring OCR repository
ocr upgrade failed with (-1)
Execution of the plugin was aborted
INFO: Configuration assistant "Oracle Clusterware Configuration Assistant" was canceled.
*** Starting OUICA ***
Oracle Home set to C:\oracle\product\10.2.0\crs
Configuration directory is set to C:\oracle\product\10.2.0\crs\cfgtoollogs. All xml files under the directory will be processed
INFO: The "C:\oracle\product\10.2.0\crs\cfgtoollogs/configToolFailedCommands" script contains all commands that failed, were skipped or were cancelled. This file may be used to run these configuration assistants outside of OUI. Note that you may have to update this script with passwords (if any) before executing the same.
I am using VMware WorkStation 5
http://www.oracle-base.com/articles/10g/OracleDB10gR2RACInstallationOnWindows2003UsingVMware.php
I can see my disks from both machines. Open the "Computer Management" dialog (Start > All Programs > Administrative Tools > Computer Management
I use Windows XP SP2 as the host operating system
Any suggestion?
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.
But the operating system is the least important part of creating a cluster. The questions you need to be able to address are:
1. What is your solution to created shared storage?
2. What is your solution to create the cache fusion interconnect and VIPs?
If you don't have an answer to these questions you can not build a RAC cluster.

Oracle 10g RAC+ASM - Storage Issue

I’ve an issue related to Oracle 10g RAC.
I’ve 2 node cluster each being Dell 2850 Server with RHEL 4.0
I’ve EMC CX300 SAN storage with following partitions
/orasoft     10 Gb          OCFS2 File system
/oracrs          2 Gb          OCFS2 File system
/orabackup      100 Gb          OCFS2 File system
The datafiles are on ASM which is not directly visible in OS.
I’ve common Oracle Home installed in /orasoft/db_1 which is shared by both nodes in cluster.
I’ve faced an issue recently related to EMC storage.
The /orasoft partition displays 1.4 Gb space available using df command.
With both nodes sharing the common Oracle Home (/orasoft/db_1), when ever I try to touch a file I get an error as No Space left on device. I’m unable to start any service with the same reason.
Is this setup correct ??
Can anyone help me with this storage issue ??

Hi,
If you create a new diskgroup you may be to add the same diskgroup to parameter file or spfile and which will be needing down time.
sugestion: Instead of creating new diskgroup you should to add disk to existing group.if you add asm disk to existing group your all problem will be solved and Oracle itself will be managing all.And than i am sure no need to add entry in the parameter or spfile like +db_create_file_dest=.....
regards,
Sher khan

Time synchoronization while configuring Oracle 10g RAC

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