Oracle RAC Question

Question about oracle rac. lets say we have a 3 node RAC database and our tnsnames.ora file is configured to point to node 1. If an application is connected to the database using the database connection information that is on the tnsnames.ora file (pointing to node1), and node 1 is down, how does the application know to point to node 2 or node 3 to connect to the database?

If you didn't configure node2 and node3 as failover nodes, only the currently connected sessions would failover by the other nodes.
New connections are no longer possible.
Sybrand Bakker
Senior Oracle DBA
Oracle is not about rocket science. It is about being able and willing to read documentation.

Similar Messages

A question about Oracle RAC

Hello
I see a question:
by one thread in one process on one machine, select a row by unique condition , show can not find , and then insert a the same row, show occur error violate unique;
ask for help!

i hope , this links may help you.
Thread: Server side Load balancing in RAC
Server Side Load Balancing Testing
read Oracle documentation:
http://www.oracle.com/pls/db102/search?word=server+side+load+balancing&partno=
http://www.oracleracexpert.com/2010/01/oracle-rac-load-balancing-and-failover.html
http://www.databasejournal.com/features/oracle/article.php/3659411/Oracle-RAC-Administration---Part-15-Connection-Load-Balancing-and-FAN.htm
http://oracleinstance.blogspot.com/2010/08/transparent-application-failover-taf.html

Installing OIM 9.1.0.2 on Oracle RAC

Hello friends,
I have a question about installing Oracle Identity Manager, Oracle Identity Manager need to install 9.1.0.2 as a repository having an Oracle RAC database, my question is: when you run the script prepare_xl_db.sh Do I need to edit this file to prepare the Oracle database on RAC? or can be run without any parameter edit and prepare the Oracle database in RAC
Thanks

Check for Metalink Note: 788789.1

Oracle RAC on Suse 9.1 ?

Hi Linux Forum,
For the purpose of a conference demonstration in the beginning of November - this year ;-) - I am planning to set up an Oracle RAC with 10g.
It would be really nice to do this setup on SuSe 9.1 with the 2.6 kernel.
My question is now as simple as:
Should I just forget it, since Oracle RAC does not work with a 2.6 kernel, or could I expect to reach the goal before november?
--Flemming

I would suggest to use Suse Enterprise Edition (30 day eval available) if your committed to suse - i have gotten it to work here.
Otherwise, the easiest path is to use WhiteBox or CentOS linux - both are free versions of Redhat enterprise linux.
Centos.com i think (or .org) - just google for CentOS linux or whitebox linux. THat way you can simply follow the setup guides oracle & redhat provide

Recommendations - Oracle RAC 10g on Solaris 10 Containers Logical/Local..

Dear Oracle Experts et all
I have a couple of questions for Oracle 10g RAC implementation on Solaris and seek your advice. we are attempting to implement oracle 10g RAC on Solaris OS and SPARC Platform.
1 We are wondering if Oracle 10g RAC could be implemented on Solaris Local/Logical Containers? I was assuming that Oracle will always link it self with OS binaries and Libraries while S/W installation and hence will need an OS image/Root Disk over which it could go. However, in containers, I assume we have a single solaris installation and configuration which will thus be shared to the containers which will be further configured in it. In such situations how does Oracle instalation proceed? Do I need to look at a scenario where, the global Container/Zone will have Oracle install and this image be shared across to zones/containers accordingly? If it is so, what all filesystems from OS will need to be shared across to these zones/containers?
Additionally, even if this approach is supported, is it a recommended approach? I am unsure about the stability and functionality of Oracle in such cases and am not able to completly conceptualize. However, I assume there could be certain items which needs to be approprietly taken care off. It will help if you could share observations from your experiences.
2 The idea of RAC we are looking at is to have multiple Oracle Installations on top of native clustering solution say veritas clusters/Sun Clusters. Do we still need to have Oracle Cluster solution Clusterware (ORACRS) on top of this to achieve Oracle Clustering? Will I be able to install Oracle as a standalone installation on top of native clustering solution say veritas clusters/Sun Clusters?
Our requirement is to have the above mentioned multiple Oracle installations spread across two (2) seperate H/W platforms,say Node A and Node B, and configure our Cluster Solution to behave as active-passive across Node A and Node B. In other words, I will configure Clustering Solution like VRTS/SunCluster in Active-Passive, then have 3 Oracle installations on Node A, another 3 on Node B. I will configure one database each for each of these Oracle S/W installation (with an idea not to have Clusterware between clustering solution VRTS/SunCluster and Oracle installation, if it works). Now I will run 3 databases thus on each of these nodes. If any downtime happens on any one of the nodes, say Node A, I will fail all oracle databases and S/W accordingly to the alternate available node, Node B in this case, using native clustering solution and I will want the database to behave as it was behaving earlier, on Node A. I am not sure though if I will be able to bring the database up on Node B when resources in OS perspective are failed over.
we want to use Oracle 10g RAC Release 2 EE on Solaris 10 OS latest/one before the latest release.
Please share your thoughts.
Regards!
Sarat

Sarat Chandra C wrote:
Dear Oracle Experts et all
I have a couple of questions for Oracle 10g RAC implementation on Solaris and seek your advice. we are attempting to implement oracle 10g RAC on Solaris OS and SPARC Platform.
1 We are wondering if Oracle 10g RAC could be implemented on Solaris Local/Logical Containers? My understanding is that RAC in a Zone (Container) is not supported by Oracle, and will not work anyway. Regardless of installation, RAC needs to do cluster level stuff about the cluster configuration, changing network addresses dynamically, and sending guaranteed messages over the cluster interconnect. None of this stuff can be done in a Local Zone in Solaris, because Local Zones have fewer permissions that the Global Zone. This is part of the design of Solaris Zones, and nothing to do with how Oracle RAC itself works on them.
This is all down to the security model of Zones, and Local Zones lack the ability to do certain things, to stop them reconfiguring themselves and impacting other Zones. Hence RAC cannot do dynamic cluster reconfiguration in a Local Zone, such as changing virtual network addresses when a node fails.
My understanding is that RAC just cannot work in a Local Zone. This was certainly true 5 years ago (mid 2005), and was a result of the inherent design and implementation of Zones in Solaris. Things may have changed, so check the Solaris documentation, and check if Oracle RAC is supported in Local Zones. However, as I said, this limitation was inherent in the design of Zones, so I do not see how Sun could possibly have changed it so that RAC would work in a Local Zone.
To me, your only option is the Global Zone. Which pretty much destroys the argument for having Zones on a Solaris system, unless you can host other non-Oracle application on the other Zones.
2 The idea of RAC we are looking at is to have multiple Oracle Installations on top of native clustering solution say veritas clusters/Sun Clusters. Do we still need to have Oracle Cluster solution Clusterware (ORACRS) on top of this to achieve Oracle Clustering? Will I be able to install Oracle as a standalone installation on top of native clustering solution say veritas clusters/Sun Clusters?I am not sure the term 'native' is correct. All 'Cluster' software is low level, and has components that run within the operating system. Whether this is Sun Cluster, Veritas Cluster Server, or Oracle Clusterware. They are all as 'native' to Solaris as each other. They all perform the same function for Oracle RAC around Cluster management - which nodes are members of the cluster, heartbeats between nodes, reliable fast message delivery, etc.
You only need one piece of Cluster software. So pick one and use it. If you use the Sun or Veritas cluster products, then you do not need the Oracle Clusterware software. But I would use it, because it is free (included with RAC), is from Oracle themselves and so guaranteed to work, is fully supported, and is one less third party product to deal with. Having an all Oracle software stack makes things simpler and more reliable, as far as I am concerned. You can be sure that Oracle will have fully tested RAC on their own Clusterware, and be able to replicate any issues in their own support environments.
Officially the Sun and Veritas products will work and are supported. But when you get a problem with your Cluster environment, who are you going to call? You really want to avoid "finger pointing" when you have a problem, with each vendor blaming the cause of the problem on another vendor. Using an all Oracle stack is simpler, and ensures Oracle will "own" all your support problems.
Also future upgrades between versions will be simpler, as Oracle will release all their software together, and have tested it together. When using third party Cluster software, you have to wait for all vendors to release new versions of their own software, and then wait again while it is tested against all the different third party software that runs on it. I have heard of customers stuck on old versions of certain cluster products, who cannot upgrade because there are no compatible combinations in the support matrices between the cluster product and Oracle database versions.
I will configure Clustering Solution like VRTS/SunCluster in Active-Passive, then have 3 Oracle installations on Node A, another 3 on Node B. As I said before, these 3 Oracle installations will actually all be on the same Global Zone, because RAC will not go into Local Zones.
John

Oracle RAC 11G - Service configuration

Hi,
I have been reading a lot of documentation regarding oracle services and I have an ok understanding of how they work. However, I have a general question regarding configuring services using Oracle RAC. For instance, if I have a 2 node oracle 11GR2 RAC on a Linux Redhat server. I have an application that connects to a service I have created. I create the service as follows.
srvctl add service -d ORCL_RAC -s APP_SERVICE -r ORCL_RAC1,ORCL_RAC2
The tnsnames contains:
APP_OLTP =
(DESCRIPTION =
(LOAD_BALANCE = ON)
(FAILOVER = ON)
(ADDRESS = (PROTOCOL = TCP)(HOST = server01)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = server02)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = APP_SERVICE)
(FAILOVER_MODE =
(TYPE = SELECT)
(METHOD = BASIC)
(RETRIES = 20)
(DELAY = 1)
My questions are as follows:
1) When I do a 'srvctl status service -d ORCL_RAC', should I see the service running on both nodes of the RAC? Or does it run only one node, then it will fail over to the other when needed?
2) If I have a RAC environment where I see two services created (RAC_SRV1 and RAC_SRV2). I see that RAC_SRV1 is only running on node1 and RAC_SRV2 is only running on node2. There are two applications sharing the same database, one application is using RAC_SRV1 and the other application is using RAC_SRV2. Am I correct in thinking that there is no failover available here? If node1 goes down, the application connecting to RAC_SRV1 will not be able to connect to node2 right?
3) In the case of the scenario in question 2 above, would it be best practise to simply create one service and have both applications connecting to the one service? Could I configure the one service to point connections from one application to node1 and connections from the other application to node2?

1) When I do a 'srvctl status service -d ORCL_RAC', should I see the service running on both nodes of the RAC? Or does it run only one node, then it will fail over to the other when needed?you can see its running on both nodes.
use option -a in srvctl ( A list of available instances to which the service fails over when the database is administrator managed.)
http://docs.oracle.com/cd/E11882_01/rac.112/e16795/srvctladmin.htm#i1008562
2) If I have a RAC environment where I see two services created (RAC_SRV1 and RAC_SRV2). I see that RAC_SRV1 is only running on node1 and RAC_SRV2 is >only running on node2. There are two applications sharing the same database, one application is using RAC_SRV1 and the other application is using RAC_SRV2. Am >I correct in thinking that there is no failover available here? If node1 goes down, the application connecting to RAC_SRV1 will not be able to connect to node2 >right?All depend on your service configuration. check it by srvctl config
3) In the case of the scenario in question 2 above, would it be best practise to simply create one service and have both applications connecting to the one >service? Could I configure the one service to point connections from one application to node1 and connections from the other application to node2? better create two service ,one for each application with specific node and other node in available list.

Oracle RAC 10g on Windows XP Professional

Hi All,
I read many articlaes that we can not install Oracle 10g RAC on Windows xp professional but the problem is I have a laptop where I am installing VMWARE with Unix O/S I can not upgrade my XP to Server edition as I do not have money o buy license.
Please help me what all files I need to change to make my XP one of the nodes os RAC 10g.

Thanks for replying.
Can by downloading the kit,I will be able to install Oracle RAC?
My question was:
I have windows xp on my machine.I have vmware software also.I need to install Oracle RAC 10g on winxp and an guest opertaing system which will be linux.I want to test RAC by making 1 node on linux and one node on guest operating system winxp.
Problem is RAC can only be installed on Server edition.Can it be possible to do it on WinXP?

Database Table Resource via Oracle RAC connection Manager

Hello,
Our current IDM 8.1 syncs off a HR Database Table using the Database Table connector.
Our DBA's are moving the view into an Oracle RAC environment.
Question: Is there a way for us to connect and sync off our DB table through an Oracle RAC connection manager.
I understand that for the IDM repository, this is possible.
jdbc:oracle:thin@(DESCRIPTION =
(ADDRESS_LIST =
(LOAD_BALANCE = ON)
(FAILOVER = ON)
(ADDRESS = (PROTOCOL = TCP)(HOST = server1.ser.com)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = server2.ser.com)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = db.com)
servers server1 and server2 are oracle connection managers
Thank you for your input,
-RC

We moved the repository to Oracle RAC recently. The syntax to switch to the new databasecluster was something like this:
lh setRepo -tOracle -ujdbc:oracle:thin:@//dbcluster1.domain:1521/service_idm.oradb.domain -Uwaveset -Pwachtwoord
For the 'lh setRepo' command the old database had to be up, and we had to use the old ojdb5.jar. After that we switched to ojdb6.jar.
One of our resources is a database table with HR data in the same database. The following Database Access Parameters work for us:
Database Type:      Oracle
JDBC Driver:      oracle.jdbc.driver.OracleDriver
JDBC URL Template:      jdbc:oracle:thin:@//%h:%p/%d
Host :     dbcluster1.domain
Database: service_idm.oradb.domain
Port: 1521
Greetings,
Marijke

Oracle RAC Interconnect, PowerVM VLANs, and the Limit of 20

Hello,
Our company has a requirement to build a multitude of Oracle RAC clusters on AIX using Power VM on 770s and 795 hardware.
We presently have 802.1q trunking configured on our Virtual I/O Servers, and have currently consumed 12 of 20 allowed VLANs for a virtual ethernet adapter. We have read the Oracle RAC FAQ on Oracle Metalink and it seems to otherwise discourage the use of sharing these interconnect VLANs between different clusters. This puts us in a scalability bind; IBM limits VLANs to 20 and Oracle says there is a one-to-one relationship between VLANs and subnets and RAC clusters. We must assume we have a fixed number of network interfaces available and that we absolutely have to leverage virtualized network hardware in order to build these environments. "add more network adapters to VIO" isn't an acceptable solution for us.
Does anyone know if Oracle can afford any flexibility which would allow us to host multiple Oracle RAC interconnects on the same 802.1q trunk VLAN? We will independently guarantee the bandwidth, latency, and redundancy requirements are met for proper Oracle RAC performance, however we don't want a design "flaw" to cause us supportability issues in the future.
We'd like it very much if we could have a bunch of two-node clusters all sharing the same private interconnect. For example:
Cluster 1, node 1: 192.168.16.2 / 255.255.255.0 / VLAN 16
Cluster 1, node 2: 192.168.16.3 / 255.255.255.0 / VLAN 16
Cluster 2, node 1: 192.168.16.4 / 255.255.255.0 / VLAN 16
Cluster 2, node 2: 192.168.16.5 / 255.255.255.0 / VLAN 16
Cluster 3, node 1: 192.168.16.6 / 255.255.255.0 / VLAN 16
Cluster 3, node 2: 192.168.16.7 / 255.255.255.0 / VLAN 16
Cluster 4, node 1: 192.168.16.8 / 255.255.255.0 / VLAN 16
Cluster 4, node 2: 192.168.16.9 / 255.255.255.0 / VLAN 16
etc.
Whereas the concern is that Oracle Corp will only support us if we do this:
Cluster 1, node 1: 192.168.16.2 / 255.255.255.0 / VLAN 16
Cluster 1, node 2: 192.168.16.3 / 255.255.255.0 / VLAN 16
Cluster 2, node 1: 192.168.17.2 / 255.255.255.0 / VLAN 17
Cluster 2, node 2: 192.168.17.3 / 255.255.255.0 / VLAN 17
Cluster 3, node 1: 192.168.18.2 / 255.255.255.0 / VLAN 18
Cluster 3, node 2: 192.168.18.3 / 255.255.255.0 / VLAN 18
Cluster 4, node 1: 192.168.19.2 / 255.255.255.0 / VLAN 19
Cluster 4, node 2: 192.168.19.3 / 255.255.255.0 / VLAN 19
Which eats one VLAN per RAC cluster.

Thank you for your answer!!
I think I roughly understand the argument behind a 2-node RAC and a 3-node or greater RAC. We, unfortunately, were provided with two physical pieces of hardware to virtualize to support production (and two more to support non-production) and as a result we really have no place to host a third RAC node without placing it within the same "failure domain" (I hate that term) as one of the other nodes.
My role is primarily as a system engineer, and, generally speaking, our main goals are eliminating single points of failure. We may be misusing 2-node RACs to eliminate single points of failure since it seems to violate the real intentions behind RAC, which is used more appropriately to scale wide to many nodes. Unfortunately, we've scaled out to only two nodes, and opted to scale these two nodes up, making them huge with many CPUs and lots of memory.
Other options, notably the active-passive failover cluster we have in HACMP or PowerHA on the AIX / IBM Power platform is unattractive as the standby node drives no resources yet must consume CPU and memory resources so that it is prepared for a failover of the primary node. We use HACMP / PowerHA with Oracle and it works nice, however Oracle RAC, even in a two-node configuration, drives load on both nodes unlike with an active-passive clustering technology.
All that aside, I am posing the question to both IBM, our Oracle DBAs (whom will ask Oracle Support). Typically the answers we get vary widely depending on the experience and skill level of the support personnel we get on both the Oracle and IBM sides... so on a suggestion from a colleague (Hi Kevin!) I posted here. I'm concerned that the answer from Oracle Support will unthinkingly be "you can't do that, my script says to tell you the absolute most rigid interpretation of the support document" while all the time the same document talks of the use of NFS and/or iSCSI storage eye roll
We have a massive deployment of Oracle EBS and honestly the interconnect doesn't even touch 100mbit speeds even though the configuration has been checked multiple times by Oracle and IBM and with the knowledge that Oracle EBS is supposed to heavily leverage RAC. I haven't met a single person who doesn't look at our environment and suggest jumbo frames. It's a joke at this point... comments like "OMG YOU DON'T HAVE JUMBO FRAMES" and/or "OMG YOU'RE NOT USING INFINIBAND WHATTA NOOB" are commonplace when new DBAs are hired. I maintain that the utilization numbers don't support this.
I can tell you that we have 8Gb fiber channel storage and 10Gb network connectivity. I would probably assume that there were a bottleneck in the storage infrastructure first. But alas, I digress.
Mainly I'm looking for a real-world answer to this question. Aside from violating every last recommendation and making oracle support folk gently weep at the suggestion, are there any issues with sharing interconnects between RAC environments that will prevent it's functionality and/or reduce it's stability?
We have rapid spanning tree configured, as far as I know, and our network folks have tuned the timers razor thin. We have Nexus 5k and Nexus 7k network infrastructure. The typical issues you'd fine with standard spanning tree really don't affect us because our network people are just that damn good.

Disable Intel CPU Hyper threading in Oracle RAC environment

Dear Expert,
Does disable CPU hyper threading will have direct impact or maybe unexpected behavior to Oracle RAC database?
Actually the background of this question is we have many received packet queuing on the network layer waiting to be processed. Investigation leads to the processor utilization which shows that many processor are still in idle state or not used when the other processors are busy processing incoming request.
I have visited some oracle note like
CPU Count Consideration for Oracle Parameter Setting When Using Hyper-Threading Technology (Doc ID 289870.1)
Oracle and Hyper-Threading (Doc ID 205089.1)
Using PROCESSOR_GROUP_NAME to bind a database instance to CPUs or NUMA nodes (Doc ID 1585184.1)
These document already give useful information but i wonder if there is any possibilities risk or another consideration of disabling cpu hyper threading.
Please let me know if any other information required.
Thanks.
Best Regards,
Jolly

As far as I know it is set as cpu architecture and mobile chips don't have the option. Not 100% as I've never needed to do it.
Better bet would be to check Intel ark and forums with them I expect.

FDM is not supported on Oracle RAC? Why not?

[http://download.oracle.com/docs/cd/E12825_01/epm.111/fdm_11113_readme.pdf|http://download.oracle.com/docs/cd/E12825_01/epm.111/fdm_11113_readme.pdf] We are in the process of implementing Oracle Hyperion Financial Data Quality Management (FDM) version 11.1.1.3 as part of our Hyperion Essbase BI environment. I read over the documentation prior to building the databases, but apparently I missed an important bit of information. It seems that FDM is not supported on Oracle RAC. I just noticed this under in the "Known Issues" section of the FDM 11.1.1.3 release notes, and that was only one sentence. The release notes do not explain why this is the case.
- Does anyone know why FDM release 11.1.1.3 is not supported for Oracle RAC?
- Has this always been the case?
- Can a single node database, running on an Oracle 10.2.0.4 two node RAC environment, be used instead of building a separate, stand-alone database?
Link to readme document. The reference to RAC support, or non-support, is on page 6:
http://download.oracle.com/docs/cd/E12825_01/epm.111/fdm_11113_readme.pdf

Hi Daan,
I belive we all shoud consider http://forums.oracle.com/forums/ann.jspa?annID=939
I get upset to see people on this forum who answer the questions like *'use google'* or *'let me google it for you'* or *'use this forum filter'*
I belive it is better to help them answer a better question or if you don't like the question ignore it.
Hi user10511107,
I belive your problem is with Windows not with BI, BI just can't get windows version,
If you are on right version of windows go to MSDN and search for your error and how to fix it
ERROR: Provider Load Failure.
Regards
Nicolae

Solaris x86 with Oracle RAC 10g Enterprise Edition Release 10.2.0.3.0

Hello,
Maybe you can help me (new on RMAN backup) in doing this.
I have configured a single Oracle 10g database to have backup with RMAN with following steps:
1. $ mkdir $ORACLE_BASE/rman_scripts
2. $ mkdir $ORACLE_BASE/logs
3. $ mkdir $ORACLE_BASE/tracking
4. $ mkdir $ORACLE_BASE/c_backup
5. $ sqlplus sys/<password> as sysdba
6. SQL> alter system set db_recovery_file_dest_size = 50G scope=both;
7. SQL> alter system set db_recovery_file_dest='${ ORACLE_BASE}/flash_recovery_ area' scope=both;
8. SQL> alter system set log_archive_dest_10='location= use_db_recovery_file_dest';
9. SQL> shutdown immediate
10. SQL> startup nomount
11. SQL> alter database archivelog;
12. SQL> alter database open;
13. SQL> alter database enable block change tracking using file '${ORACLE_BASE}/tracking/rman_ change_track.f';
14. $ rman target /
15. RMAN> CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK
TO '/var/opt/oracle/flash_ recovery_area/ORCL/c_backup/% F';
16. RMAN> CONFIGURE CONTROLFILE AUTOBACKUP ON;
17. RMAN> CONFIGURE BACKUP OPTIMIZATION ON;
18. RMAN> CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;
19. RMAN> exit
I need to configure incremental backup with RMAN on a two node Solaris x86 with Oracle RAC 10g Enterprise Edition Release 10.2.0.3.0 installation.
We also use ASM to store database files, and have Oracle software installed on separate file systems (two Oracle roots for Node1 and Node2).
I have following questions:
1) where to put Flash Recovery Area (FRA)?
I saw recommendations to put FRA on the ASM, is this the best way to do it?
2) Can I put FRA on another file system (not on the ASM) which is available only from Node1? This way I can save space on the ASM.
3) Is it possible/recommended to run RMAN from Node1 only?
Below is the script used to run RMAN on the normal Oracle database (without RAC) which I need to change :
=============================================================================================
2.0 Oracle backup script: /opt/app/oracle/rman_scripts/backup.sh
Use this for daily backups, possiblly as a cron job.
Once a week run this: /opt/app/oracle/rman_scripts/backup.sh FULL
All other days of the week: /opt/app/oracle/rman_scripts/backup.sh INCREMENTAL
Note: You may have to change ORACLE_SID, ORACLE_BASE below to match your database.
=============================================================================================
#!/usr/bin/ksh
ORACLE_SID=orcl
ORACLE_BASE=/opt/app/oracle
ORACLE_HOME=${ORACLE_BASE}/product/10.2.0/db_1
PATH=${ORACLE_HOME}/bin:/usr/bin
LOGDIR=${ORACLE_BASE}/logs
LOGFILE=${LOGDIR}/rman.log
if [[ $# < 1 ]]
then
echo "usage: backup.sh FULL|INCREMENTAL"
exit;
fi
BACKUPTYPE=${1}
full='FULL'
incremental='INCREMENTAL'
if [[ $BACKUPTYPE == $full ]]
then
$ORACLE_HOME/bin/rman target / nocatalog log ${LOGFILE} append << eof
run {
backup database;
SQL 'alter system archive log current';
backup archivelog all;
delete noprompt obsolete;
exit;
eof
echo ''
fi
if [[ $BACKUPTYPE == $incremental ]]
then
$ORACLE_HOME/bin/rman target / nocatalog log ${LOGFILE} append << eof
run {
backup database;
backup incremental level 1 database;
SQL 'alter system archive log current';
backup archivelog all;
delete noprompt obsolete;
exit;
eof
echo ''
fi

Hi [email protected],
Q1) where to put Flash Recovery Area (FRA)?
A1) With RAC: on the shared storage
I saw recommendations to put FRA on the ASM, is this the best way to do it?
If you want your backups to be available for both nodes you have to use shared storage or tape using an mml library.
So if you want to use the FRA for rman backups and the database is on ASM just make ASM the standard for the FRA as well.
Q2) Can I put FRA on another file system (not on the ASM) which is available only from Node1? This way I can save space on the ASM.
A2) Than you cannot recover in case Node1 is down. Best would be to send your storage admin to a training course so he can manage the clustered raw devices needed for ASM.
Q3) Is it possible/recommended to run RMAN from Node1 only?
A3) No see A2.
Regards,
Tycho

Oracle RAC 10g on Solaris 10 in a non-global zone

I need to run Oracle RAC 10g on Solaris 10 in a non-global zone as I must cap the CPUs used for Oracle licensing limitations. My question is a simple one, but one for which I'm getting conflicting information depending upon whom I ask.
If I want to run RAC in a non-global zone on two nodes, does this require the use of Solaris Cluster?
I know there are good reasons to use Solaris Cluster, but the company for which I work cannot afford the additional expense of Solaris Cluster at this time. Is it possible to run Oracle RAC 10g in a capped container without Solaris Cluster or is Solaris Cluster absolutely required?
Thanks in advance for any insight you can provide.

AFAIK, Oracle 10g RAC is not supported in solaris containers.
It is however supported in Solaris zone clusters...in order to use it, you would have to use Sun Cluster 3.2 (iinm).

Oracle RAC on Sun server.

Hello Oracle RAC gurus,
I have below questions, I would highly appreciate if anyone can answer these.
1) Is it must to have identical server model and configuartion for Oracle RAC?
2) I have Sun Fire 280R machine with Sun solaris 10. Can I install Oracle RAC on this
using Oracle VMWare?
3) Please let me know below scenario is possible or not,
If I have Oracle Databases(single instances) are running on my Sun server box, can I
use this machine as primary node for Oracle RAC? If this is not possible then
can I use as secondary node?
Thanks gurus.

For 1: NO, the hardware does not need to be exactly the same. The nodes can be different models, with different CPU speed and different RAM sizes. The only consideration is that they must be the same O/S. This is a hardware vendor issue. They determine which configurations they are willing to support.
For 2: RAC is currently not supported in Oracle VM.
For 3: YES, at first glance you can do this. Note that the RAC database requires a cluster database home. Thus, you would need to install a cluster database home in addition to the Single Instance database home(s). However, this answer does not consider whether or not your node would be capable of hosting another database instance in regards to performance.
Thanks.

Oracle RAC + Clusterware and another Cluster with Clusterware for SAP

Hi,
I have some questions about implementation of Oracle RAC and Clusterware with SAP
For exemple, an architecture with 4 servers ( 2 real and 2 vritual ).
I would like to know if i can do this
2 servers for the first cluster.
First cluster is with Clusterware and Oracle RAC
This is for all the SAP Oracle databases environment
I think there is no problem here.
Now, with 2 others servers il would like to make another cluster (with also clusterware ) for SAP Central services (SCS) and enque replication server (ERS)
Because all architecture is for only one SAP environment with separate services.
1 for Database (cluster 1)
1 for Central services ( cluster 2, virtual machine )
1 for Dialogue Instance (no cluster)
To be clear, the second cluster is to make HA of central services SAP (SCS and ERS )
My question 2 are :
Is it a good job to do this ? or there is anything wrong ?
Do i have to install antoher clusterware for this 2 servers or i have to make anything with the existing clusterware + oracle RAC ??
Thank you very much for you help
Edited by: user12395221 on 29 déc. 2009 15:36

Hi Givre,
have you checked: Providing High Availability for SAP Resources (http://www.oracle.com/technology/products/database/clusterware/pdf/sap-availability-on-rac-twp.pdf) available on otn.oracle.com/clusterware? Not being an SAP expert myself, I still think, this paper describes the configuration - at least partially - that you are trying to set up.
Just an idea. Thanks,
Markus

Oracle RAC Question

Similar Messages

Maybe you are looking for