Oracle RAC and Oracle Secure Backup Express

I am building a new RAC environment - 7-Nodes on Linux.
We are very interested in reviewing Oracle Secure Backup, possible Oracle Secure Backup Express.
My understanding about Oracle Secur eBackup Express is it is licensed "free" as long as you are working with a single tape drive.
Does anyone know - does this apply to RAC as well?
Thanks

Please refer to the OSB licensing document for
specific differences between OSB-XE and OSB:
http://download-west.oracle.com/docs/cd/B32520_01/doc/
license.101/b25528/toc.htm
In general, we recommend you backup each RAC node to
insure all local files are protected which would mean
the OSB-XE edition would not be recommended since
OSB-XE is backup of one server.Thank you - I will review this.
.. and your White Papers regarding performance were just what I was looking for.

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Database replication between Oracle RAC and Oracle Standalone DB

Hi,
We have currently 4 node RAC environment and Oracle RAC implementation with 4 Oracle instances. We want to move the one instance and make it Standalone with Oracle database due to availability issue. Thus we will remain with 3 nodes on the RAC database and one Standalone database. We want to implement Oracle replication on this solution, where partial database of RAC environment needs to be replicated to Standalone node.
We will have Oracle 9i database server for both RAC and Standalone machine.
The partial data that we are looking for replication are of size 25GB. Some of questions we have:
1. Is there any other replication mechanism apart from Materilzed view for this solution?
2. Is it feasible to sychronize around 25GB data between servers?
3. What can be estimated time for refresh or Synchronization?
Thanks in advance for help.

The methods that we are evaluating currently for this replication are:
1. Multi Master replication
2. Oracle 9i Datagaurd.
Please let me know if we need to look for some other methods of replication also.

Database replication between Oracle RAC and Oracle Standalone DB in 9i

Hi,
We have currently 4 node RAC environment and Oracle RAC implementation with 4 Oracle instances. We want to move the one instance and make it Standalone with Oracle database due to availability issue. Thus we will remain with 3 nodes on the RAC database and one Standalone database. We want to implement Oracle replication on this solution, where partial database of RAC environment needs to be replicated to Standalone node.
We will have Oracle 9i database server for both RAC and Standalone machine.
The partial data that we are looking for replication are of size 25GB. Some of questions we have:
1. Is there any other replication mechanism apart from Materilzed view for this solution?
2. Is it feasible to sychronize around 25GB data between servers?
3. What can be estimated time for refresh or Synchronization?
The methods that we are evaluating currently for this replication are:
1. Multi Master replication
2. Oracle 9i Datagaurd.
Please let me know if we need to look for some other methods of replication also.
Thanks in advance for help.

ManojMac wrote:
The partial data that we are looking for replication are of size 25GB. Some of questions we have:
1. Is there any other replication mechanism apart from Materilzed view for this solution?Streams is another option
2. Is it feasible to sychronize around 25GB data between servers?Sure. Depending on the rate of change, your latency requirements, whether the standalone database has the horsepower to apply all the changes generated by to other three nodes, etc.
3. What can be estimated time for refresh or Synchronization?Depends on the architecture, the network connection, whether you are doing incremental refreshes, etc. And it depends on what time you're measuring-- you might be measuring the latency between the RAC cluster and the standalone database, you might be measuring the time it takes to incrementally refresh a single materailized view when there have been no changes, you might be measuring the time it takes to do a complete refresh of an entire refresh group, pulling 25 GB of data over the network.
The methods that we are evaluating currently for this replication are:
1. Multi Master replication
2. Oracle 9i Datagaurd.DataGuard is not an option if you only want to replicate a subset of the data. The two realistic options are materialized views and Streams. Are you anticipating that you will be making changes on both nodes? If not, you can use simple materialized views rather than multi-master replication.
Since 9.2 is not longer covered by Premier Support, are you planning to upgrade to a supported version in the near future? In particular, Streams works a lot better in later versions of the database.
Justin

Which is the difference between Oracle RAC and Oracle Clusterware?

Hi all, maybe this is a stupid question, but I've read the documentation, and still don't understand which is the difference between RAC and Clusterware.
Can anybody explain it to me?
Thanks in advance!

RAC is database option part of Oracle Database software needed to have database running in cluster mode; see http://download.oracle.com/docs/cd/E11882_01/server.112/e16508/glossary.htm#CNCPT2076.
Clusterware is separate software needed to run Oracle Database in cluster mode: you can use Oracle Clusterware without Oracle Database but you cannot use Oracle Database with RAC option without Oracle Clusterware.
See http://download.oracle.com/docs/cd/E11882_01/rac.112/e16794/intro.htm#BABCHEEE.
Edited by: P. Forstmann on 19 nov. 2010 19:11
Edited by: P. Forstmann on 19 nov. 2010 19:11

Robust messaging between Oracle RAC and Oracle XE

We ran into Bug 13484963 (ORA-3146 from AQ propogation from 11.2.0.3 to 11.2.0.2) - which means that a 11.2.0.3 queue fails to propagate to a 11.2.0.2 queue, due to this bug (ORA-03146: Invalid buffer length for TTC field).
I described the error in posting Bug 13484963: 11.2.0.3 AQ to 11.2.0.2 in the AQ forum, but no responses.
My question to this forum is what alternatives are there are to AQ, for passing XML/CLOBs robustly between a 11.2.0.3 platform and a 11.2.0.2 platform, when the network is at times not robust.
For example, rolling a custom PL/SQL solution will need to use a db link to push data across. If that tcp connection breaks without sender or receiver getting a FIN/RST bit set in a packet, the party will not know the tcp connection broke. And will wait. Forever. Until terminated externally (e.g. alter system disconnect session). There is no tcp timeout. There is no TcpKeepAlive option supported with such a db link connection. This requires more custom processing for monitoring existing custom processes (b-brain monitoring a-brain issue). Gets ugly.
With AQ for example, this is not a problem as it handles the same issue without a problem (likely internal code timeouts set via signal/event handlers?).
Any suggestions as how one can address the basic requirement for pushing XMLs (as CLOBs) with minimal hacking between databases without AQ?

We have a "solution" that requires a data push from 11.2.0.3 to XE in this our case the size of data to be sent is fairly small (20-30 rows) and the target system does not require updates on every row change, data is pushed every 15 seconds across a database link using as merge statement executed in a pl/sql package run by a scheduler job. To mitigate for delays and network issues the job is monitored and shot in the head if it takes longer than 10 seconds, as you are dealing with clobs I'm not sure if this will work as
Another alternative we have looked at is Continuous Query Notification, this only got as far as a proof of concept as the customer changed their mind in our case the requirement was to push a small subset of the rows inserted into a table into a remote database to enable our monitoring team to check for certain types of activity the solution was a java process that registered a query on the source database and when notified of a change grabbed the rows and inserted them into the target, as we where looking at only a small set of rows (80-300 rows per day out of 1.5-2 million inserts) and the target application was written in java this proved workable.
Neither solution is elegant, particularly scalable or lacking in PL/SQL Hacks and in our case both are workarounds to an inflexible core application and new requirements that do not generate large revenue, currently we are looking at upgrading the XE databases to SEONE so that we can get support, patches and upgrades and move over to AQ for these type of problems.

Tape Drive and Library Compatibility Matrix - Oracle Secure Backup Express

Does Oracle Secure Backup Express support IBM System Storage TS3200 Tape Library with two Tape Drives?
Regards
Rado

That library is listed on the support matrix which applies to both OSB-XE and OSB:
http://www.oracle.com/technology/products/secure-backup/pdf/Tape_Devices10.2.pdf
Keep in mind that OSB-XE licensing restricts usage to one server direct attached to one tape drive. Per your post, your library has 2 tape drives which cannot be used with OSB-XE but certainly could with OSB.

Is Oracle Secure Backup Express "free"?

Hi:
Oracle Secure Backup Express is free when licensing the database? or it's licensed separetly? For instance... Oracle Standard Edition...
Regards
r

Oracle Secure Backup Express is free. It works with all editions of the Oracle database. Please refer to the licensing documentation for specifics:
http://download.oracle.com/docs/cd/E14812_01/doc/doc.103/e12836/toc.htm
Donna

What are the major differences between oracle 10g and oracle express 10g

Hi
Can anyone tell, What are the major differences between[b] oracle 10g and oracle express 10g.
Or if you know any URL, then please do let me know.
Advance Thanks
JC

Dear sir,
here it is.
http://www.oracle.com/database/product_editions.html

Oracle Clustre, Oracle Cluster with RAC and Oracle 10g

Is there a difference between Oracle Cluster and Oracle Cluster with RAC? Please explain. Do existing database codes run unmodified in Cluster or Cluster with RAC environment? What needs to be modified to make existing SQL codes RAC-aware. How to achieve 'all automatic' in case of failure and resubmission of Queries from failed instance to a running instance?
In 10g environment, do we need to consider licensing of RAC as a separate product? What are additional features one derives in 10g that is not in Cluster +RAC?
Your comments and pointers to comparison study and pictorial clarification will be very helpful.

Oracle cluster like failsafe before or Veritas Cluster or other vendor's cluster is meant for HA (high availability) purpose. Which 2 nodes or more can see a shared disk with 1 active node. Whenever this active node failed through heartbeat other machine will know and will take the database over from there.
Oracle RAC is more for HA and load balance. In Oracle RAC 2 or more nodes are accessing the database at the same time so it spread load across all these nodes.
I believe Oracle 10g RAC still need seperate license for it. But you need to call Oracle or check the production document to verify it.
Oracle 10g besides improvement in RAC. It's main improvement is on the build in management of the database itself. It can monitored and selftune itself to much furthur level then before and give DBA much more information to determine the cause of the problem as well. Plus improvement on lots of utility as well like RMAN , data pump etc... I don't want to get into too much detail on this you can check on their 10g new features for more detail view.
Hope this help. :)

RAC and Oracle Sequences

We have a RAC running for two instances , we have noticed that one trigger on update which is using a sequences to get ids is not allocating such sequences
on sequence as expected , is every instance of RAC caching a set of sequences and the other instance have no idea about this , is this a configuration which has
to be done at RAC level

sayantan chakraborty wrote:
what is the difference between RAC and Oracle clusterware?RAC = Oracle Real Application Clusters
http://www.oracle.com/technology/products/database/clusterware/clusterware_for_unbreakable_linux_faq.html#
In the event of a system failure, clustering ensures high availability to users. Redundant hardware components, such as additional nodes, interconnect, and disks, allow the cluster to provide high availability. Such redundant hardware architectures avoid single points-of-failure and provide exceptional fault resilience.
In Oracle Real Application Clusters (RAC) environments, Oracle Clusterware monitors and manages Real Application Cluster databases. When a node in the cluster is started, all instances, listeners and services are automatically started. If an instance fails, the clusterware will automatically restart the instance, so that the service is often restored before the administrator notices it was down. In this sense Oracle Clusterware is the basis for Oracle Real Application Clusters.
In those environments RAC ensures the continuous operation of the database as well as its scalability by running more than one database instance simultaneously, typically one on every node in the cluster.
You cna
how to get RAC 10g?What did you mean?
If you mean Software:
http://www.oracle.com/technology/software/index.html
Docs:
http://www.oracle.com/technology/products/database/clustering/index.html
http://www.oracle.com/pls/db102/portal.portal_db?selected=16
Or Search on Google
http://www.google.co.th/search?rlz=1C1GGLS_thTH327TH327&sourceid=chrome&ie=UTF-8&q=Oracle+Real+Application+Cluster
Good Luck

Oracle RAC and Datastage

Could anyone tell me If you have some Best Practices with Oracle RAC and Datastage ETL. I am concerned about performace of ETL loads into oracle database......

http://download.oracle.com/docs/cd/B19306_01/server.102/b14220/bus_intl.htm#sthref2435
Your answers are just a few clicks beyond the URL below.
http://tahiti.oracle.com

Need to understand basics of Oracle RAC and Grid technology, for training

I need to understand Oracle RAC and Grid infrastructure, from a manager's / training perspective.
I see links here and here, so a couple questions:
- what's the basic difference from a layman's (e.g., a manager's) perspective ?
- What training options are available for a generic 11g DBA to learn this new technology ? I've seen this course from an Oracle partner ("Course:Oracle 11g: RAC and Grid Infrastructure Administration Accelerated Release 2"), for a boat load of money, for 5 days I think. So we're looking for something a little more reasonable (and accessible), e.g., books, online, etc.

Wm Peck 1958 wrote:
I need to understand Oracle RAC and Grid infrastructure, from a manager's / training perspective.
I see links here and here, so a couple questions:
- what's the basic difference from a layman's (e.g., a manager's) perspective ?
- What training options are available for a generic 11g DBA to learn this new technology ? I've seen this course from an Oracle partner ("Course:Oracle 11g: RAC and Grid Infrastructure Administration Accelerated Release 2"), for a boat load of money, for 5 days I think. So we're looking for something a little more reasonable (and accessible), e.g., books, online, etc.
For a very basic definition, RAC is technology that is used by the database and GI is the infrastructure that makes RAC work. In a forum reply, that's probably all what can be said about both. For a very lengthy answer, you should read the links that you have quoted.
For #2, the course that you are looking at is called Accelerated as it combines two courses in a single week training-RAC(4) and GI(3). So it's a 7 day curriculum that one would be doing in a 5 day course and that should justify its cost. But let me say, it's a really really good course. But on the other side, it can be quite overwhelming for someone who doesn't know about these technologies already. So I shall suggest that you send your team to each course individually and probably after doing some homework . They can start reading the following books,
Pro Oracle Database 11g RAC on Linux
https://www.mheducation.co.in/html/9781259004063.html
And this doc link,
Oracle Database Online Documentation 11g Release 2 (11.2)
Aman....

32 Bit Installation or Oracle Linux and Oracle Database 10g

I have an old E-Machine that I wanted to put Oracle Linux and Oracle Database Express 11G on. I was just wanting to do some testing and development on the system. I'm pretty sure the machine is 32bit.
I just burned a copy of 32 bit Oracle Linux onto a CD. Is there a version of Oracle Database Express that will run on it?
It seems like there is only a 64 bit version of Oracle Express Database 11g. Is Oracle Database Express 10g installable on Oracle Linux 32 bit?
Let me know! Thanks in an advance.

One (or two) caveats with the 10g version, XE can not be patched and the 10.2.0.1 XEs were created before the current daylight savings time rules went into effect.
If you have access to My Oracle Support there is a method to get updated timezone files for the oracle binaries, you need at least version 4 of the DST files. I've got the MOS docIDs somewhere let us know if needed and I'll dig 'em up.

Questions on the comparison between Oracle Forms and Oracle APEX

Hi All,
The link below presents information about Oracle Application Express for Oracle Forms Developers, the table at the end of the page shows a comparison between Oracle Forms and Oracle APEX, all the points of comparisons are clear for me except 3 points which are:
•Locking, what is meant by locking models?
•Database Connections, what is meant by Synchronous/Asynchronous connections in Oracle Forms and Oracle Apex?
•Architecture, what is meant by 2tier and 3 tier connections?
http://www.oracle.com/technology/products/database/application_express/html/apex_for_forms.html
What I need is a simple explanation for these points without deep details.
Thanks

Hi
That is how I understand that document:
Locking: Forms, by default, locks a row as soon as the user starts modifying the data. That is pessimistic locking. Apex, on other hand (and optionally forms also) do not lock the record, but before applying any changes checks if the data has changed since the user queried it (what for some reason is called optimistic "locking")
DB connections: I am not sure why they used the terms synchronous/asynchronous, but the difference is that Forms, by default, keeps an permanent DB connection while the user is using the application, while Apex gets a connection from a connection pool every time a page is requested/submitted.
Architecture: Forms (in its web version at least) has 3 tiers: the browser, the appserver where the forms service runs and the database. As Apex runs inside the database, there are only 2 tiers: the browser and the database (though you still may need an http server in between which serves static content, I don't think it is considered part of the application in this context). If you are talking about client/server forms, then there are only 2 tiers.
I hope this helps!
Luis

Select query differences between oracle 9 and oracle 8.

Hi,
I have a problem using the select query between oracle 7 and oracle 9i I don't have the same result :
ex:
With oracle7
SQL> select 'champ1','champ2' from DUAL;
'CHAMP 'CHAMP
champ1 champ2
With Oracle 9
SQL> select 'champ1','champ2' from DUAL;
'CHAMP1' 'CHAMP2'
champ1 champ2
So Can someone tell me how to solve this problem ? Is there a parameter in oracle 9 to set?
Thanx.

Whenever you are posting anything over internet forums like this - you should be very careful about not just posting the details which requires to solve the problem - also should be sensible about your question.
This is not at all desired when you are posting such question. It may be because - you may not well aware of the fact.
My suggestion is -> First Go through the basics Of SQL in general.
Then go for any specific product like Oracle/ SQL Server/ Sybase etc.
And, finally learn the advanced commands of that DB.
You asked it - may be you thought the difference in output in terms of lines. But, that is not your actual output. That is the graphical display part only.
Anyway,
You can get the quite familier output by first type the following command ->
set lin 310Regards.
Satyaki De.

Oracle RAC and Oracle Secure Backup Express

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