Oracle Client version : which one to install?

I apologize if this is not the correct forum, but wasn't sure whether to put it in th general forum or the installation forum.
I have the following environments
Production
Windows 2003 R2 Oracle 9.2.0.8
Windows 2003 R2 Oracle 11.1.0.7
RHEL 5 Oracle 11.2.0.2.0.
Similar evironments exist in QA and dev.
We have app developers that require just the oracle client to be installed.
Should I be installing the 9.x client on every laptop or take the most recent as I presume there is backward compatibility.
Any help is appreciated.
Thanks.

You should be using the 11gR2 client
See MOS Doc 207303.1 (Client / Server / Interoperability Support Between Different Oracle Versions)
HTH
Srini

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We are on PT 8.46.04 and FSCM 8.8 and planning to upgrade the Batch NT server Hardware running on Windows Server 2000 SP4 to WIndows Server 2003.
We are also upgrading the Oracle database from 9.0.2.1.0 to 10g.
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can we have different database and client versions?
And also does Oracle support client 9.2.0.1.0 on Windows server 2003 .
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can we have different database and client versions?The official and recommanded way by Peoplesoft is to meet the same version between client (what ever client machine, application server and batch server) and the database server.
And also does Oracle support client 9.2.0.1.0 on Windows server 2003 Yes, Oracle 9.2 is certified on Windows 2003 (however, 9.2.0.3 or higher patchset was required).
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Oracle Developer Suite Installation Guide 10g (10.1.2.0.2) for Solaris, Windows and Linux x86
Table 4 Memory Requirements for Oracle Developer Suite Components
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Hi All,
     How do I check the oracle client version installed from the OS level. I do know my database version I need to check which client is being used. Is there a table where this information is stored.
Thanks
Shabna

disp+work.exe -V will tell you which OCI version was used during compiling and linking.
Oracle uses release independent DLL Names (Unix people would say Shared Libraries) and therefore the SAP Kernel will dynamically load any Oracle Client Version found in the standard DLL Load Path during startup.
If you have more versions installed on your computer and you are not shure which one is loaded you can use Process Explorer (freeware, see www.sysinternals.com) to find out which one is loaded. If they belong to an Oracle_home (up to release 9.2) refere to Oracle Universal Installers Inventory information in order to find out which exact version is used.
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An SAP ABAP Server Integrated Resource is the version information disp+work.exe -V is listing (evquivalent to SM51 - Release Information).
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SM51: Datenbank Client Library : OCI_10201_SHARE (10.2.0.2.0)
Explorer (OCI.DLL located in the same directory as disp+work.exe):
   10.2.0.2.0 Patch2
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   oranls10.dll - 10.2.0.1.0 Production
   orasnls10.dll - 10.2.0.1.0 Production
   oraunls10.dll - 10.2.0.1.0 Production
   oravsn10.dll - 10.2.0.1.0 Production
   oracommon10.dll - 10.2.0.1.0 Patch1
   orageneric10.dll - 10.2.0.2.0 Patch2
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   orapls10.dll - 10.2.0.1.0 Patch1
   orasql10.dll - 10.2.0.1.0 Production
   oraxml10.dll - 10.1.0.2.0
   orahasgen10.dll - 10.2.0.1.0 Production
   oraocrutl10.dll - 10.2.0.1.0 Production
   oraocr10.dll - 10.2.0.1.0 Production
   oraocrb10.dll - 10.2.0.1.0 Production
   oranbeq10.dll - 10.2.0.1.0 Production
   orantcp10.dll - 10.2.0.1.0 Production
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2. the Oracle Patch and Build environment is not very reliable
Peter

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--M.B.

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Hello,
I'm afraid that the answer given by Samrat Dangeti is incorrect.
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Please, check the following thread on the Oracle Forum where this is being clarified.
How do I check the oracle client version?
Message was edited by:
Fidel Vales

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H wrote:
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Hi.
I want to check the oracle client version on my machine.
Do we have any command utility to get the client version(like osql in sql server)/ways to do this.?
Thanks in advance.

Hi,
Just type the utility/command and you should get the version. Here is an example:
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SQL*Plus: Release 10.2.0.4.0 - Production
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Note: 417395.1 - How To Find Version Of Oracle Client ?
https://metalink2.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=417395.1
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ORACLE CLIENT VERSION INFO

Hi Oracle Guru`s
I`m going to update Oracle databases to 11.2.0.3 from 9i,10G and 11.10.7.0. May I know the Oracle Client versions that supports 11.2.0.3?

I am sure any 11.2 client will be supported for sure.So why not 11.2.0.3? 11.1 and 10.2 are only being supported with extended support. 7,8,9 client are not oficially supported.
For more:
Client / Server / Interoperability Support Matrix For Different Oracle Versions [ID 207303.1]

Oracle Client version : which one to install?

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