64-bit Oracle and FME
From Fmepedia
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Q) Is FME compatible with a 64-bit Oracle server?
A) Yes. However, FME is a 32-bit application and therefore needs the 32-bit client. It is permissible to install both 32 and 64 bit clients together; for FME purposes you just have to make sure that ORACLE_HOME is *not* defined, and that the PATH includes both instant clients' installation directories (in either order). If you want to use TNSNAMES.ORA, you need to set the TNS_ADMIN environment variable to the directory containing this file.
Q) Does FME need to be installed on a 64-bit machine, or does it need to be a 64-bit version of FME?
A) No, although it should still work if you are.
