C:WindowsSystem32odbcad32.exe
, Oracle client with both versions installed 32 bit and 64 bit.PATH
environment variable to point to the ORACLE_HOME
that you want to use.PATH
to add ;C:oracleinstantclient32_12_1
on the end and it worked perfectly, no restart needed.C:oracleinstantclient32_12_1
directory I specified contains files like oci.dll
and ociw32.dll
and belonged to the 32-bit Instant Client install. I guess it doesn't matter for 64-bit, since there is no Microsoft ODBC 64-bit client.