Error System Data OracleClient requires Oracle client software version 8 1 7 or greater when installs setup

Question

I have made a desktop app Setup that connects with remote Oracle 10g Database  When I install Setup on remote machine and run my application then I get following error   system data oracleclient requires oracle client software version 8 1 7 or greater   It works well on my Development machine

User · Answer

It is a security issue  so to fix it simply do the following    Go to the Oracle Client folder  Right Click on the folder  On security Tab  Add  Authenticated Users  and give this account Read  amp  Execute permission  Apply this security for all folders  Subfolders and Files  IMPORTANT   Don t Forget to REBOOT your Machine  if you forgot to do this you will still face the same problem unless you restart your machine    http   blogs msdn com b fabdulwahab archive 2011 11 13 system-data-oracleclient-requires-oracle-client-software-version-8-1-7-or-greater aspx

User · Answer

Go to C  app insolution product 11 2 0 client 1 BIN and find oci dll  Right click on it -- Properties -- Under Security tab  click on Edit -- Then Click on Add Button --  Here add two new users with names IUSR and IIS IUSRS and give them full controls  That s it

User · Answer

Install Nuget for Oracle ManagedDataAccess Make sure you are using  header for Oracle  using Oracle ManagedDataAccess Client  This Worked for me

User · Answer

On your remote machine  System Data OracleClient need access to some of the oracle dll which are not part of  Net  Solutions     Install Oracle Client   and add bin location to Path environment varaible of windows OR  Copy  oraociicus10 dll  Basic-Lite version  or aociei10 dll  Basic version   oci dll  orannzsbb10 dll and oraocci10 dll from oracle client installable folder to bin folder of application so that application is able to find required dll   On your local machine most probably path to Oracle Client is already added in Path environment variable to there required dll are available to application but not on remote machine

User · Answer

If you have to use the older client  here is my experience   We are running a 32bit server so the development machines run the 32bit client  We run the 11 1 install  11 2 gets the error  Once you have installed the 11 2 version you have to manually delete the files Oracle Web dll and System Data OracleClient dll from the  windir  Microsoft NET Framework v2 0 50727  reinstall 11 1  then register the dlls with gacutil exe   This fixed the issue with my systems

User · Answer

The error message is pretty self-explanatory  your application needs the Oracle Client installed on the machine it s running on  Your development PC already has it  Make sure your target PC has it  too    Edit  The System Data OracleClient namespace is deprecated  Make sure you use the driver native to your database system  that would be ODP NET from Oracle

User · Answer

After installation of Oracle Client 11 02 04  reboot the server and make sure USERS Local Computer  is added with Full Control on Root folder for eg WWW  Tested  it worked

[c#] Error System.Data.OracleClient requires Oracle client software version 8.1.7 or greater when installs setup

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