Single to rac using dbca

i am trying to convert single node to rac using dbca. (11.2.0.3 on Linux5 )
During the template, creation i am choosing the Structure only Option ( I am not backing up the data ie., structure as well as data) as the
single instance running (TEST) is on the same cluster and i want to retain the datafile path also which is already on shared storage.
While creating db using template for rac conversion, the dbca screen doesn't proceed further after choosing the Storage.
All, i wanted to know, if this way it is possible or not.. ie without backup. The documentation says only about taking the backup along with strcuture.
I know rconfig works fine in this way; why not dbca.

Similar Messages

Using DBCA to duplicate a 10gR2 RAC DB to another box...

Hi All :)
Background:
=========
I am attempting to use DBCA to create a database based on a template dump (structure and data) from my source system.
My source systems is/was RAC enabled and was using a NFS "clustered" file system for shared storage (not RAW or ASM).
The target DB $ORACLE_HOME was "cloned" from the source system using an Apps methodology called RapidClone (which is a supported way to install a new DB Techstack for use with Apps - Apendix - A of 406982.1).
I am running DBCA from the new target $ORACLE_HOME however it is really only a software home at present...meaning, the tns listeners are not correct, there exists no valid pfile, etc....nothing that really associates the instance to this home.
QUESTIONS:
==========
1. Let's remove Apps from the picture for a minute. If I was attempting to clone a RAC DB to another box, and I did a software only install on the target box and used DBCA to create the DB based on my existing DB template......would I need to "prep" the new target DB $ORACLE_HOME before running the DBCA create from template script??
2. Because this is RAC...I fully expect to have to add the instances and listeners to CRS manually, and understand I will need to configure the listener and tnsnames files....But does DBCA have the ability to at least bring up the new target system DB on a single node such that I can create my spfiles, and listeners and such?
3. Would it be advisable to disable RAC, simplifying my source system configuration, and then create my DBCA template based on the system "data as well as structure" and then create the new target DB with the more simplistic configuration and then re-enable RAC?
Thanks for any guidance or help.

Wow Sybrand...
You are just full of hostility man. People using Oracle products come from differing backgrounds and while your strong suit might be RMAN and the DB....others might know more about framework, java or the middleware products...and come here seeking guidance...and then get insulted by folks like you.
DBCA can be run from the command line, which is my objective later. Yes, RMAN is better suited to do what I am trying to do however I have additional existing (Apps specific) code which is NOT suited to RMAN.
I would suggest you see the DBCA docs:
This is just one example:
http://download.oracle.com/docs/cd/B19306_01/server.102/b14196/install003.htm#i1008647-->scroll down to "From an existing database (structure and data)"....
Also...try the following search in google:
DBCA clone database....
You will see many people seem to advocate using this method of database cloning and it has worked for them and not just for empty databases.
I would be appreciative if responses would be limited to those with experience in using DBCA to duplicate an existing database....not with criticisms and reasons why some other tool should be used.
Thanks in advance.

Problem in create database use dbca in RAC

i setup a two-nodes RAC, and use dbca to create db
here is the output of dbca
[oracle@rac1 ~]$ dbca -silent -responseFile /home/oracle/dbca.rsp
Copying database files
1% complete
3% complete
9% complete
15% complete
21% complete
27% complete
30% complete
Creating and starting Oracle instance
32% complete
36% complete
40% complete
44% complete
45% complete
48% complete
50% complete
Creating cluster database views
52% complete
70% complete
Completing Database Creation
73% complete
76% complete
79% complete
80% complete
81% complete
90% complete
99% complete
100% complete
Look at the log file "/opt/ora/product/10.2.0/db_1/cfgtoollogs/dbca/mydb/mydb.log" for further details.
and here is the log output:
Failed to retrieve network listener resources required for the Real Application Clusters high
availability extensions configurations on the following nodes: [rac1, rac2].
Do you want listeners on port 1521 with prefix LISTENER to be created on nodes [rac1, rac2]
automatically? If you would like to configure the listener with different properties, run NetCA
before continuing.
PRKS-1009 : Failed to start ASM instance "+ASM1" on node "rac1", [CRS-0215: Could not start
resource 'ora.rac1.ASM1.asm'.]
PRKS-1009 : Failed to start ASM instance "+ASM2" on node "rac2", [CRS-0215: Could not start
resource 'ora.rac2.ASM2.asm'.]
Could not mount the diskgroup on node: rac2. The ASM instance on node rac2 is not started.
Could not mount the diskgroup on node: rac2. The ASM instance on node rac2 is not started.
Copying database files
DBCA_PROGRESS : 1%
DBCA_PROGRESS : 3%
DBCA_PROGRESS : 9%
DBCA_PROGRESS : 15%
DBCA_PROGRESS : 21%
DBCA_PROGRESS : 27%
DBCA_PROGRESS : 30%
Creating and starting Oracle instance
DBCA_PROGRESS : 32%
DBCA_PROGRESS : 36%
DBCA_PROGRESS : 40%
DBCA_PROGRESS : 44%
DBCA_PROGRESS : 45%
DBCA_PROGRESS : 48%
DBCA_PROGRESS : 50%
Creating cluster database views
DBCA_PROGRESS : 52%
DBCA_PROGRESS : 70%
Completing Database Creation
Failed to start listeners on nodes "[rac1, rac2]" of cluster database "mydb", "CRS-1028: Dependency
analysis failed because of:
CRS-0223: Resource 'ora.rac2.LISTENER_RAC2.lsnr' has placement error.".
DBCA_PROGRESS : 73%
DBCA_PROGRESS : 76%
DBCA_PROGRESS : 79%
ORA-01078: failure in processing system parameters
ORA-01078: failure in processing system parameters
ORA-01565: error in identifying file '+ORADG/mydb/spfilemydb.ora'
ORA-17503: ksfdopn:2 Failed to open file +ORADG/mydb/spfilemydb.ora
ORA-15056: additional error message
ORA-17503: ksfdopn:DGOpenFile05 Failed to open file +ORADG/mydb/spfilemydb.ora
ORA-17503: ksfdopn:2 Failed to open file +ORADG/mydb/spfilemydb.ora
ORA-15173: entry 'spfilemydb.ora' does not exist in directory 'mydb'
ORA-06512: at line 4
ORA-01034: ORACLE not available
DBCA_PROGRESS : 80%
ORA-01034: ORACLE not available
ORA-01034: ORACLE not available
ORA-01034: ORACLE not available
DBCA_PROGRESS : 81%
ORA-01034: ORACLE not available
DBCA_PROGRESS : 90%
Enterprise manager configuration failed due to the following error -
Invalid username/password.
Refer to the log file at /opt/ora/product/10.2.0/db_1/cfgtoollogs/dbca/mydb/emConfig.log for more
details.
You can retry configuring this database with Enterprise Manager later by manually running
/opt/ora/product/10.2.0/db_1/bin/emca script.
DBCA_PROGRESS : 99%
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
PRKP-1001 : Error starting instance mydb1 on node rac1
CRS-1028: Dependency analysis failed because of:
CRS-0223: Resource 'ora.mydb.mydb1.inst' has placement error.
PRKP-1001 : Error starting instance mydb2 on node rac2
CRS-1028: Dependency analysis failed because of:
CRS-0223: Resource 'ora.mydb.mydb2.inst' has placement error.
DBCA_PROGRESS : 100%
Database creation complete. Check the logfiles at
/opt/ora/product/10.2.0/db_1/cfgtoollogs/dbca/mydb for details.
Database Information:
Global Database Name:mydb
System Identifier(SID) Prefix:mydb
it should be run netca　before running dbca?

this time i run netca first,and then run dbca to configure the ASM,after that i run dbca to create database
listener and asm instance is online,but when i create DB ,still have error
Copying database files
DBCA_PROGRESS : 1%
DBCA_PROGRESS : 3%
DBCA_PROGRESS : 9%
DBCA_PROGRESS : 15%
DBCA_PROGRESS : 21%
DBCA_PROGRESS : 27%
DBCA_PROGRESS : 30%
Creating and starting Oracle instance
DBCA_PROGRESS : 32%
DBCA_PROGRESS : 36%
DBCA_PROGRESS : 40%
DBCA_PROGRESS : 44%
DBCA_PROGRESS : 45%
DBCA_PROGRESS : 48%
DBCA_PROGRESS : 50%
Creating cluster database views
DBCA_PROGRESS : 52%
DBCA_PROGRESS : 70%
Completing Database Creation
DBCA_PROGRESS : 73%
DBCA_PROGRESS : 76%
DBCA_PROGRESS : 79%
ORA-01078: failure in processing system parameters
ORA-01078: failure in processing system parameters
ORA-01565: error in identifying file '+ORADG/mydb/spfilemydb.ora'
ORA-17503: ksfdopn:2 Failed to open file +ORADG/mydb/spfilemydb.ora
ORA-15056: additional error message
ORA-17503: ksfdopn:DGOpenFile05 Failed to open file +ORADG/mydb/spfilemydb.ora
ORA-17503: ksfdopn:2 Failed to open file +ORADG/mydb/spfilemydb.ora
ORA-15173: entry 'spfilemydb.ora' does not exist in directory 'mydb'
ORA-06512: at line 4
ORA-01034: ORACLE not available
DBCA_PROGRESS : 80%
ORA-01034: ORACLE not available
ORA-01034: ORACLE not available
DBCA_PROGRESS : 89%
DBCA_PROGRESS : 98%
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
PRKP-1001 : Error starting instance mydb1 on node rac1
CRS-0215: Could not start resource 'ora.mydb.mydb1.inst'.
PRKP-1001 : Error starting instance mydb2 on node rac2
CRS-0215: Could not start resource 'ora.mydb.mydb2.inst'.
DBCA_PROGRESS : 100%
following info from my template file
<MiscParams>
<databaseType>MULTIPURPOSE</databaseType>
<maxUserConn>20</maxUserConn>
<percentageMemTOSGA>40</percentageMemTOSGA>
<customSGA>false</customSGA>
<archiveLogMode>false</archiveLogMode>
<initParamFileName>+ORADG/admin/{DB_UNIQUE_NAME}/pfile/init.ora</initParamFileName>
</MiscParams>
<SPfile useSPFile="true">{ORACLE_HOME}/dbs/spfile{SID}.ora</SPfile>
</InitParamAttributes>
and dbca create +ORADG in /home/oracle dir (why??)
[oracle@rac1 ~]$ ls +ORADG/admin/mydb/pfile/init.ora.6132011173958
+ORADG/admin/mydb/pfile/init.ora.6132011173958
Edited by: 859340 on 2011-7-12 下午7:25

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.

How secured is deleting db using DBCA

Dear all,
Am planning to convert a single node DB to RAC..
in the note,it is mentioned to create a DBCA template of the single node DB (with data and structure) and delete the existing DB using DBCA and create a RAC DB using DBCA and using the template created earlier ?
Can I rely on this ?
Please suggest
Kai

Hello,
DBCA takes care of everything while deleting instance whereas in manually you have to run several steps. I also like using drop database which generally take care of everything too (little skeptical about deleting datafiles but I think it deletes datafiles) as well.
See following links how to use drop database and database should be in restrict mode before dropping it
http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/statements_8009.htm#SQLRF01513
Regards
Edited by: OrionNet on Mar 14, 2009 11:40 AM

Convert 11gR1 to RAC using 11gR2 GRID

Hi everyone,
I have the following scenario.
I have 2 servers running RHEL 5: server1 and server2
on server1 I have an active database running 11gR1 single instance.
I'm going to install 11gR2 GRID across server1 and server2.
Then migrate the 11gR1 DB on server1 into ASM.
My question is, if I want to create a second instance on server2 can I install another single instance 11gR1(software only) and do the necessary RAC conversions or will I have to do a new 11gR1 cluster DB install across the 2 nodes and do RAC conversions then?
Thanks in advance.

Well mate, for once, you should've known that a RAC is not created by plugging two single instances together and then rebooting the machine, vrooooommm you go.... No, it doesn't work that way... You gotta do some good reading....
I guess you need to have your final configuration as
Clusterware + ASM - 11gR2
Database - 11gR1
Below are the likely steps to acheive it:
Backup the current 11gR1 database
Set up 11gR2 cluster using the two nodes
Do 11gR1 oracle binaries cluster install
Startup ASM isntances on 11gR2 clusterhome & configure disks.
Using the newly installed 11gR1 binaries on one of the nodes, restore/move the database backup taken in the first step to use ASM
Convert the single instance 11gR1 database (running on new 11gR1 binaries) with ASM to RAC. - Suggest doing manual conversion than using dbca for better control.
Cookbooks available in metalink and clear procedures are available with a simple search on oracle documentation.
Cheers.

Getting ORA-27102: out of memory while creating DB using DBCA

Hi All,
I am working on 11.2.0.3 oracle version and linux OS. I am trying to create a new database using dbca and getting error "ORA-27102: out of memory".
Please find the DB version and OS level parameters info below and let me know what i need to do to overcome this issue.
SQL> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
PL/SQL Release 11.2.0.3.0 - Production
CORE 11.2.0.3.0 Production
TNS for Linux: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production
$uname -a
Linux greenlantern1a 2.6.18-92.1.17.0.1.el5 #1 SMP Tue Nov 4 17:10:53 EST 2008 x86_64 x86_64 x86_64 GNU/Linux
$cat /etc/sysctl.conf
kernel.shmall = 2097152
kernel.shmmax = 4294967295
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
net.core.rmem_default = 4194304
net.core.wmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_max = 1048576
fs.file-max = 6815744
fs.aio-max-nr = 1048576
net.ipv4.ip_local_port_range = 9000 65500
$free -g
total used free shared buffers cached
Mem: 94 44 49 0 0 31
-/+ buffers/cache: 12 81
Swap: 140 6 133
$ulimit -l
32
$ipcs -lm
------ Shared Memory Limits --------
max number of segments = 4096
max seg size (kbytes) = 4194303
max total shared memory (kbytes) = 8388608
min seg size (bytes) = 1
Please let me know for any other details.
Thanks in advance.

Ok, first, let's set aside the issue of hugepages for a moment. (Personally, IMHO, if you're doing manual memory mangement, and you're not using hugepages, you're doing it wrong.)
Anyhow, looking at your SHM parameters:
kernel.shmall = 2097152
kernel.shmmax = 4294967295
kernel.shmmni = 4096
Let's take those in reverse order:
1.) shmmni - This is the max number of shared memory segments you can have on your system, regardless of the size of each segment.
2.) shmmax - Contrary to popular belief, this is NOT the max amount of shared memory you can allocate system wide! This is the max size, in bytes of a single shared memory segment. You currently have it set to 4GB-1. This is probably fine. Even if you wanted an SGA larger than 4GB, having shmmax set to this wouldn't hurt you. Oracle would simply allocate multiple shared memory segments, until it had allocated enough memory for the SGA. There's really no harm there, unless this parameter is set really low, causing a huge number of tiny shared memory segments to be allocated.
3.) shmall - This is the real shared memory segment limit. This number is the total amount of shared memory you're permitted to allocate, system wide, expressed in pages. Pagesize here is the native OS pagesize, which is 4096 bytes, so, this is 2097152 * 4096 = 8589934592, or, 8GB. So, 8GB is the maximum amount of memory that can currnetly be allocated to shared memory, on your machine.
So, having said all that, you haven't mentioned how many, if any, other Oracle databases are running on the server or their sizes. Secondly, we have no idea what memory sizing parameters you have set on the database that you're trying to create, that's getting the error.
So, if you can provide more details, in terms of how many other databases are already on this server, and their SGA sizes, and the parameters you've chosen for the database that's failing to create, perhaps we can help more.
Finally, if you're not using SGA_TARGET or MEMORY_TARGET, you really need to take the time to configure hugepages. Particularly if you've got a server that has as much memory as you do, and you're planning to have non-trivially sized SGA (10s of GB), then you really want to configure hugepages.
Hope that helps,
-Mark

ORA-12547 tns lost contact while creating 11gr2 database using dbca

Hi All,
I am installing oracle 11gr2 rac on centos 4. Grid infrastrucure and oracle home is successfully installed.
When i try to create database using dbca during that time i am getting an error that PRCR-1079: Failed to start resource ora.racdb.db
ORA-12547: TNS lost contact.
when i check the database on node 1, Its running fine.
However its giving me an error on the second node.
on Node 1
[oracle@rac1 dbs]$ sqlplus "/as sysdba"
SQL*Plus: Release 11.2.0.1.0 Production on Sun Aug 28 19:31:55 2011
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options
SQL> select instance_name , host_name from v$instance;
INSTANCE_NAME
HOST_NAME
racdb1
rac1.oracle.com
on node 2:
[oracle@rac2 ~]$ sqlplus "/as sysdba"
SQL*Plus: Release 11.2.0.1.0 Production on Sun Aug 28 19:33:05 2011
Copyright (c) 1982, 2009, Oracle. All rights reserved.
ERROR:
ORA-12547: TNS:lost contact
Enter user-name:
I tried to installed to many a time but no luck.
Please help me on this.
Your assistance in this regards is much appreciated.
Thanks in advance.

Do you have a support.oracle.com User Account?
If yes search there for TNS-12547 and you will get a huge list of possible root causes.
Just to name a few (which you can check - also compare with your first node):
Permission oracle executable
Kernel Parameter
Environment variables
etc.etc.
Regards
Sebastian

How to install Oracle RAC using 11gR2 on Win 7 32 bit from scratch?

Hiii,
I am a fresher and I have a win 7 system 32 bit with oracle 11gR2.
I want to install RAC using two or more servers but I dont know too much about it.
I tried to search on google but all they are giving information in pieces(for win 7) or about Linux(Please tell me why its all Linux everywhere not windows).
Please let me know if there any site where I can find step by step installation from scratch.
What are basic requirements(/software if needed).
Thank you.

Hi,
First of all forget about Windows!! Oracle is mainly designed for Linux systems. Oracle runs as real multi-process on Linux machines whereas on Windows it runs as a single process with multi-thread.
Memory usage - huge pages,single CPU run queue, dnfs, storage systems... etc. lots of concepts exists.
Besides Windows is one of the most poorly designed operating systems, you should use it only to watch cute kitten movies on youtube... Believe me, you wouldn't want to learn Oracle on Windows...
So, install virtualbox and then setup Oracle Enterprise Linux on it as a first step... By the way you have to deal with DNS server for release 11.X, RAC, you may start with 10g for now.
ORACLE-BASE has all the installation steps explained detailly, search for "oracle base rac install" on google.
I also explained on my blog, but it is a little bit advanced installation using ZFS storage simulator. DNS server installation is also explained: http://ilkertaysi.com/2013/11/11/oracle-rac-installation-with-zfs-storage/

Create database on RAC environment - DBCA hangs on clone database creation

Hi, friends!
I have two vm´s (vmware 2) with OEL 5 installed.
I´ve installed OGI and database software sucessfully. So, my crs stack is working fine in both two nodes.
However, when i use DBCA to create a database in this RAC environment, it hangs when it gets on "clone database creation", about 52% of the progress bar.
My DBCA logs don´t point any error out. It just hangs on..
I wait about 4 hours and it doesn´t move on.
I searched and found many cases like that, including here in OTN. But it seems nobody could find a resolution to this issue.
Is there any bug about OEL 5 and database 11gR2??
More details:
I apllied the patch "p8670579_112010_LINUX" on both OGI installation (before root.sh) and databae software install (also before root.sh).
Everything worked fine.
Sorry for the grammar errors.

you can trace dbca, and you can found witch step is occurs problem.
can you paste here last 15-20 sentence of dbca trace file?
Mahir

DELETE DATAFILE (database) FROM ASM not using dbca

Hi All
I have RAC(2 node) on Windows 2003 EE, Oracle 10g R2
How i can delete file from my asm instance?
For example, i create database manualy then i want delete this database? how i can delete file from asm? dbca dont see this instance.
a long time ago, i have also TEST db, i delete this db using dbca but in ASM (EM console) i still see this db, there are no file but i see "word" TEST how i can delete that?
thanks in advice

http://www.oracle.com/technology/products/database/asm/pdf/asm_10gr2_bestpractices%2009-07.pdf
page 26
SELECT concat('+'||gname, sys_connect_by_path(aname, '/')) full_alias_path FROM
(SELECT g.name gname, a.parent_index pindex, a.name aname,
a.reference_index rindex FROM v$asm_alias a, v$asm_diskgroup g
WHERE a.group_number = g.group_number)
START WITH (mod(pindex, power(2, 24))) = 0
CONNECT BY PRIOR rindex = pindex;
:)

ORA-03113 when using dbca

I install 92040 on redhat AS21. When I create RAC db using dbca, I'll get "ORA-03113: End of file on communication channel" I have checked many doc on metalink. Most of that talk about linux kernel memory setting. I checked shmmax shmmni shmmal and echo 250 32000 100 128 > /proc/sys/kernel/sem. and echo 65536 /proc/sys/fs/file-max It doesn't work. Could someone tell me is there any other solution. (Both of two node physical memory is 1G and swap space is 2.5G)
Thanks

I have solve the problem by myself. I'll list how to fix.Maybe it could help u.
1.I change shmmax to half physical memory(I have tried it before ,it doesn't work.I don't think it is keypoint)
2. echo 250 1000 100 100 > /proc/sys/kernel/sem
3. I change shmmin to 1
then it works!
I'm not really understand about this kernel config.Could someone show me where to get detail information?

Oracle Single Node RAC - Oralce Clusterware Install

Hi
I want to install Oracle Clusterware to perform Active / Passive failiver for a 2 node cluster
I plan to use Oracle Single Node RAC for this and have Oracle Clusterware control the active passive failover.
However - I do not want to use ASM in any of my set-up.
We have a NetApp filer and are using NFS / NetApp technologies to control backups (Oracle snap manager).
Is this possible?
All the documents I have include reference to ASM
If I try and install Grid - I am also asked for ASM information.
I find ASM an un-necessary overhead given the storage we have and do want to use it,
Can anyone help?

Hi,
no you don't need ASM to have RAC One Node. OCR and Voting disk can be on NFS, simply use Shared Disk location during installation, and you won't get asked about ASM.
http://docs.oracle.com/cd/E11882_01/install.112/e22489/storage.htm#CDECEBGH
Especially http://docs.oracle.com/cd/E11882_01/install.112/e22489/storage.htm#CDEDAHGB
What you should use in conjunction with NFS however is dNFS.
Regards
Sebastian

Oracle single instance rac installation

hi,
do I need minimum of 2 servers in order to carry out 11.2 oracle single instance RAC installation ? or that its possible with one node? and then can add more nodes in future?
is there any article/documents on this?
thanks

http://download.oracle.com/docs/cd/E11882_01/rac.112/e10718/clonerac.htm#CHDGFHCA
"The cloning process assumes that you successfully installed an Oracle Clusterware home and an Oracle home with Oracle RAC on at least one node. In addition, all root scripts must have run successfully on the node from which you are extending your cluster database."
also
http://download.oracle.com/docs/cd/E11882_01/rac.112/e10717/intro.htm#BEIHEJGD
"Overview of Cloning and Extending Oracle Clusterware in Grid Environments
Cloning nodes is the preferred method of creating new clusters. The cloning process copies Oracle Clusterware software images to other nodes that have similar hardware and software. Use cloning to quickly create several clusters of the same configuration. Before using cloning, you must install an Oracle Clusterware home successfully on at least one node using the instructions in your platform-specific Oracle Clusterware installation guide.
For new installations, or if you must install on only one cluster, Oracle recommends that you use the automated and interactive installation methods, such as Oracle Universal Installer or the Provisioning Pack feature of Oracle Enterprise Manager. These methods perform installation checks to ensure a successful installation. To add or delete Oracle Clusterware from nodes in the cluster, use the addNode.sh and rootcrs.pl scripts."
it doesnt directly say its possible and I cant find full documentation on how to go about it ... but seem like its possible ?
Edited by: user9198889 on Feb 24, 2010 5:01 PM

Drop database using DBCA

DB:11.2.0.2
OS:Linux
I have 2 node RAC database and i want to drop it using DBCA but the "Delete Database" options is disabled. Please Suggest.

Your answer is here
deleting db disabled in DBCA

Single to rac using dbca

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