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parallel server

Actuallly what is oracel parallel  server. In a real situation how it works..
Thanks in advance
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nobleit
Asked:
nobleit
1 Solution
 
jocaveCommented:
"Oracle Parallel Server" is a very old term for what is now known as RAC (Real Application Clusters).  This is the technology that allows you to run multiple instances on different servers using the same database.  This allows you to scale out your Oracle system by adding additional servers rather than trying to buy larger and larger servers.
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slightwv (䄆 Netminder) Commented:
Just to add: Oracle has two main pieces: The Instance which is the processes and memory structures and the database, the files on disk.
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AnandCommented:
More additions
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In real time, RAC is maily used for 2 purposes. 1) Load Balancing : Since RAC concists of multiple nodes(servers)/database instances, load is distributed accross the nodes giving the high level performance for mission critical applications. 2) Automatic Failover : If one node/instance goes down, connections from users,applications to the database will never encounter the down time. They will be automatically directed to the surviving node/instance. Users wont feel/notice any thing for this node/instance down.
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nobleitAuthor Commented:
Sorry for the delay. The issue is solved. Thank you for all your support..
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slightwv (䄆 Netminder) Commented:
If the question has been answered, how do you wish to close this question?
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nobleitAuthor Commented:
Sorry for the delay can you please accept and anand_20703 expert's answer and accept and give points.
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slightwv (䄆 Netminder) Commented:
Any reason you cannot Accept this yourself?  Just click the 'Accept as Solution' link in the post you mentioned.
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slightwv (䄆 Netminder) Commented:
@nobleit,

You might also want to close out your other open questions.
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