I have two virtual servers and I installed Oracle 19c on only one server, and I need to install another Oracle database on the second server and I need to make clustering in the database between the two servers. How to do this? Is this available using Windows Cluster?
You can not use windows cluster to deploy oracle RAC. You should oracle's own software (Oracle Cluster ware) to do it.
2.To deploy oracle RAC:
a.If you installed database as a single instance,at first you should convert it to RAC and then through oracle addnode procedure, add the second node to cluster.
b.If your installation is a RAC you should do the prerequisite on the second node and using oracle addnode script, add the second node. in recent versions of oracle addnode has a graphical interface also.
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I am trying to create a proof of concept showing that it is possible for a company to migrate their data from their oracle 12c DB to a hadoop system..
To do this I have started a Oracle Linux 7 instance on AWS. I am planning to install Oracle 12c on it.. after that I have to create dummy tables and send them to Hadoop..
can this be done? From my initial research I can see that Sqoop and Oracle GoldenGate can do that.. also if this goes live i would have to transfer billions of records from oracle 12c to HDFS..
Any help or advice is much much appreciated..
You must use sqoop for transform your oracle data to hive. You can read this for more info
I have two oracle nodes running on RAC. Using TOAD I compiled a stored proc. My Java Application runs on Jboss and use connection pool to the oracle server. In one node I still see the old query running while the other node behave fine. How is this possible? Any idea?
Thanks
Currently our db Oracle 11g R2 enterprise db, has only 1 node and none RAC, and we are getting a new machine, I would like to RAC the old and new node together. (please do not move me to other site, I want to saty in stack over flow).
start with installing the GRID software and configure the cluster. Next install the rdbms software. The installer will detect the cluster and give the choice to install the RAC enabled software on both nodes.
If the software is installed, switch the database to use the new installed RAC enabled ORACLE_HOME. When the database is using the RAC software you can add log groups for the new to create thread. When the logs for the new thread are in place, enable the new thread and start the instance on the new node.
This all assumes that all datafiles are on storage that is shared between both nodes. Of course there are some more details but this is roughly the procedure.
I think the best aproach is to create a one node cluster using the new machine. Export data from old machine to new machine. Add old machine as a cluster node.
Do the old and new machine have the same specs. I think load balancing will be a problemen when specs are different. I don't think it's supported to have different CPU types. Check HW prerequisits
In the latest version of Oracle Database (11g Release 2), there's a new option called Real Application Clusters (RAC) One Node. What is "One Node", and how does it differ from regular RAC?
Mogens Norgaard used to joke about "single node RAC" but now it actually exists!
Basically, One Node is running a RAC database on a single server, rather than across a cluster of servers. There is an Oracle white paper on the topic. Find it here. The money quote is:
"Oracle RAC One Node enables:
• Better server consolidation
• Enhanced protection from failures
• Greater flexibility and workload management
• Better online maintenance
In addition it allows customers to virtualize database storage, standardize their database
environment, and, should the need arise, upgrade to a full multi-node Oracle RAC
database without downtime or disruption."
How do I fragment a table so that it is distributed over multiple oracle 9i servers.
Oracle horizontal scability feature is called RAC (Real Application Clusters). It allows a cluster of servers to act as a single database. It is a share-everything architecture: all servers have access to the full database that resides on shared disks.
In other words, you wouldn't "fragment" a table accross multiple servers in Oracle. You can look into partitioning, which allows you to partition a table accross several tablespaces.
Partitioning is an Entreprise Edition feature, RAC is an option of the Entreprise Edition.