Migrating from Dedicated Server to Shared server

Hi,
Please let me know how to configure from Dedicated server to Shared server in oracle 10g.
Any advises would be appreciated.
Regards,
- sridhar

It is not that hard, you only need to configure four parameters and check the listener to verify this has already been configured and registered. On the other hand, you should configure your tnsnames.ora file so you have the alternative to connect by means of a shared or a dedicated oracle server, otherwise the default, once the dispatchers and the shared server processes are configured will be shared server.
The four parameters to configure at the initialization parameter file are:
dispatchers
max_dispatchers
shared_servers
max_shared_servers
and you should create an entry at the tnsnames.ora file that declares a (server=dedicated) that will be used to connect by means of a dedicated server.
Further details on Howto configure the shared server can be found here --> Configuring Oracle Database for Shared Server.
One side note I'd like to add, shared server is suitable for scaleability in OLTP environments, if your kind of job is either batch or DDS you should open a connection by means of a dedicated server, otherwise you'll create a severe bottleneck.
~ Madrid

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SHAN@2009 wrote:
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SQL> alter system set dispatchers='(protocol=tcp)(dispatchers=10)' ;
System altered.
SQL> alter system set shared_servers=5;
System altered.
then config the client connection to shared server mode thru` net manager
and try the qq user on another pc in lan.
but it failed to use shared sever mode
SQL> col username for a10
SQL> col machine for a30
SQL> col server for a10
SQL> set linesize 120
SQL> select username,server,machine from v$session where username is not null;
USERNAME SERVER MACHINE
QQ NONE WORKGROUP\HYC-PC
SYS DEDICATED rhel5
QQ user server type is NONE
RED HAT linux or windows platform are the same result

938261 wrote:
SQL> alter system set dispatchers='(protocol=tcp)(dispatchers=10)' ;
System altered.
SQL> alter system set shared_servers=5;
System altered.
then config the client connection to shared server mode thru` net manager
and try the qq user on another pc in lan.
but it failed to use shared sever mode
SQL> col username for a10
SQL> col machine for a30
SQL> col server for a10
SQL> set linesize 120
SQL> select username,server,machine from v$session where username is not null;
USERNAME SERVER MACHINE
QQ NONE WORKGROUP\HYC-PC
SYS DEDICATED rhel5
QQ user server type is NONE
RED HAT linux or windows platform are the same resultDEDICATED vs. SHARED is controlled by the client; not by DB Server

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Hello! Sir/Madam,
Presently Our server configuration is Dedicated Server Architecture, due to number of connections opening in the dedicated server, we are shifting our server configuration to the Shared Server Archiecture.
Will any One send me what are the parameters as to be set to Configure to the Shared Server Archiecture.
Thanking U with Regards,
Sravan
Hyderabad.

I would suggest also reviewing the DBA Administration manual Ch 4 Managing Oracle Database Processes using the Oracle® Database Administrator's Guide 10g Release 2 (10.2) Part Number B14231-01 since it discusses the database parameter settings in some detail.
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HTH -- Mark D Powell --

Migrating from Dedicated Server to Shared server

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