Unable to load DLL 'OraOps12.dll


I build and publish my project with oracle client 12.1.0 and deploy it to server which has 11.1.0 client but I got this error. How could I solve this? Please help me ? My Error -

Unable to load DLL 'OraOps12.dll

The specified module could not be found. (Exception from HRESULT: 0x8007007E) at Oracle.DataAccess.Client.OpsInit.CheckVersionCompatibility(String version) at Oracle.DataAccess.Client.OracleInit.Initialize() at Oracle.DataAccess.Client.OracleConnection..cctor()

asked on Stack Overflow Apr 3, 2016 by HesenliEldar • edited Apr 3, 2016 by tinlyx

1 Answer


Its too late but i have this issue even i have installed both 32bit and 64bit oracle drivers. Just i change the Identity in ApplicationPool and Enable 32 and well then its working.

enter image description here

answered on Stack Overflow Sep 25, 2017 by sal

User contributions licensed under CC BY-SA 3.0