I am trying to configure our web server (RHEL 5.4 x86) to connect to an Oracle database using unixODBC. I have installed unixODBC-2.2.11-7.1.1, which yum tells me is the latest version. I have also installed the Oracle InstantClient 11.2 and the Oracle InstantClient ODBC library.

I have symlinked the all the .so files in /usr/lib/oracle/11.2/client/lib to /usr/lib. I have set $LD_LIBRARY_PATH to /usr/lib/, $ORACLE_HOME to /usr/lib/oracle and $TNS_ADMIN to the directory containing my (valid) Tnsnames.ora file. Here are the contents of my /etc/odbcinst.ini file:

[Oracle]
Description = Oracle ODBC Connection
Driver = /usr/lib/libsqora.so.11.1
Setup =
FileUsage =

and my /etc/odbc.ini file:

[Oracle]
Application Attributes = T
Attributes = W
BatchAutocommitMode = IfAllSuccessful
CloseCursor = F
DisableDPM = F
DisableMTS = T
Driver = Oracle
EXECSchemaOpt =
EXECSyntax = T
Failover = T
FailoverDelay = 10
FailoverRetryCount = 10
FetchBufferSize = 64000
ForceWCHAR = F
Lobs = T
Longs = T
MetadataIdDefault = F
QueryTimeout = T
ResultSets = T
ServerName = //<host>:<port>/<db>
SQLGetData extensions = F
Translation DLL =
Translation Option = 0
UserID =

(ServerName has been edited...host, port, and db are actually there, and correct)

When I run isql I get

$ isql -v Oracle
isql: symbol lookup error: /usr/lib/libsqora.so.11.1: undefined symbol: SQLGetPrivateProfileStringW

And running dltest gives me

$ dltest Oracle SQLConnect
[dltest] ERROR dlopen: Oracle: cannot open shared object file: No such file or directory

If anyone has any insights I would be grateful, I've been trying to get this to connect for about 5 hours now...

I am going home for the night, but will gladly provide more details, if necessary, tomorrow morning, to anyone willing to help...