I'm having some considerable difficulty getting a portal app to run in a development environment. There's 2 different errors: First Error

Server Error in '/Portal' Application.

Configuration Error

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. 

Parser Error Message: ORA-12154: Message 12154 not found; No message file for product=RDBMS, facility=ORA

Source Error: 

Line 233:      <sessionState mode="Custom" customProvider="MyOracleSessionStateStore" timeout="15">
Line 234:        <providers>Line 235: <add name="MyOracleSessionStateStore" type="Oracle.Web.SessionState.OracleSessionStateStore, Oracle.Web, Version=4.112.2.0, Culture=neutral,PublicKeyToken=89b483f429c47342" connectionStringName="SessiionStateProvdr"/> Line 236:        </providers>
Line 237:      </sessionState>

Source File: C:\IVRSApps\IvrsWebApps\IWRSPORTAL\Source\WebSites\IWRSPortal\web.config    Line: 235 

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1

Then I get this error:

Then this one:

Server Error in '/Portal' Application.

Configuration Error

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. 

Parser Error Message: ORA-12154: TNS:could not resolve the connect identifier specified

Source Error: 

Line 233:      <sessionState mode="Custom" customProvider="MyOracleSessionStateStore" timeout="15">
Line 234:        <providers>Line 235: <add name="MyOracleSessionStateStore" type="Oracle.Web.SessionState.OracleSessionStateStore, Oracle.Web, Version=4.112.2.0, Culture=neutral,PublicKeyToken=89b483f429c47342" connectionStringName="SessiionStateProvdr"/> Line 236:        </providers>
Line 237:      </sessionState>

Source File: C:\IVRSApps\IvrsWebApps\IWRSPORTAL\Source\WebSites\IWRSPortal\web.config    Line: 235 

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1

The TNS filenames file is the same as our production so I'm not sure what the problem is.