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shared server mode [message #459950] Wed, 09 June 2010 02:41 Go to next message
sailesh
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Registered: September 2007
Location: MAURITIUS
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Hi all,

I have a sun server V890 with solaris 10 installed.
DB version is 10.2.0.1.0.
RAM: 32 gb
SGA : 6GB

I have increased the number of processes to 5000. The number of processes keep increasing.
Right now, i am using dedicated server mode. I am planning to moved to shared server mode.

I want to know whether after configuring shared server mode, will the situation be change with connection pooling. Furthermore, have 6 application servers.

4 are using wlogic and 2 are using Glass Fish application server.

If ever i am using shared server mode, the client can connect with JDBC or tnsnames or JDBC only?

thanks,

Sailesh
Re: shared server mode [message #459952 is a reply to message #459950] Wed, 09 June 2010 02:45 Go to previous messageGo to next message
Michel Cadot
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Connection method does not matter. It is transparent for the client (code) that you use dedicated or shared server.

Regards
Michel
Re: shared server mode [message #459956 is a reply to message #459952] Wed, 09 June 2010 03:05 Go to previous messageGo to next message
sailesh
Messages: 72
Registered: September 2007
Location: MAURITIUS
Member
Hi,

Thanks for your reply. Will shared server mode reduce my processes on the database. Does pooling using share server mode affect my clients.

Is there any advantages while using share server mode instead of dedicated server mode?


Thanks,


Sailesh
Re: shared server mode [message #459968 is a reply to message #459956] Wed, 09 June 2010 03:33 Go to previous messageGo to next message
Michel Cadot
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Quote:
Will shared server mode reduce my processes on the database

Yes it is the purpose of sharing.

Quote:
Does pooling using share server mode affect my clients.

No, yes, maybe, maybe not, it depends on your application and clients.
When a server is processing for one client, it is not processing for another one. If some clients process big statements there will use the server which will not be available for other during this time.

Quote:
Is there any advantages while using share server mode instead of dedicated server mode?

Reducing the number of processes and processes creation/deletion.

Regards
Michel

Re: shared server mode [message #459977 is a reply to message #459968] Wed, 09 June 2010 04:54 Go to previous messageGo to next message
sailesh
Messages: 72
Registered: September 2007
Location: MAURITIUS
Member
Right now I have about 2000 concurrent users on my database. Will be wise to configure shared server mode. Furthermore, for the number of users i.e 2000 3000, can you just specify these parameter in number:
Shared_servers:
Max_shared_servers;
Shared_server_sessions:
Dispatchers:
Max_dispatches
Circuits:

What about wait on client side, if the number of virtual circuits is limited. Furthermore, according to your experience, a database of around 2000-3000 concurrent users what is most effective; shared or dedicated.

Please your help is invaluable for me.
Re: shared server mode [message #459982 is a reply to message #459977] Wed, 09 June 2010 05:04 Go to previous messageGo to next message
Michel Cadot
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Quote:
can you just specify these parameter in number:

I can't, it depends on your application and server limits.

Quote:
Furthermore, according to your experience, a database of around 2000-3000 concurrent users what is most effective; shared or dedicated.

Once again it depends on your application and server limit.
If your server well supports dedicated then it is better to use dedicated.

Regards
Michel

[Updated on: Wed, 09 June 2010 05:07]

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Re: shared server mode [message #459993 is a reply to message #459982] Wed, 09 June 2010 05:28 Go to previous messageGo to next message
sailesh
Messages: 72
Registered: September 2007
Location: MAURITIUS
Member
Hi,

These are the initialisation parameters for shared server mode.

I am using weblogic 9.2 as application server.

Thanks,

Sailesh
Re: shared server mode [message #460003 is a reply to message #459950] Wed, 09 June 2010 06:05 Go to previous messageGo to next message
sailesh
Messages: 72
Registered: September 2007
Location: MAURITIUS
Member
Hi,

One last question:

Do i have to use JDBC connection from my application server or use TNSNAME?


Thanks,


Sailesh
Re: shared server mode [message #460010 is a reply to message #460003] Wed, 09 June 2010 06:22 Go to previous message
Michel Cadot
Messages: 68718
Registered: March 2007
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As you want.
For security purpose I recommend OCI driver (tnsnames) but this requires installing an Oracle client on the client side.

Regards
Michel
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