mseberg wrote: So is this a Toad issue or an Oracle client issue? More like a general software or programming "issue". If Toad (or other program) is 32-bit, then loaded libraries (e.g. Oracle Client dll's) needs to be 32-bit. Re: Oracle Instalation Not Appearing in Connect Using Dropdown in TOAD I was able to partially solve the problem by finding where TOAD was getting that path. I set the correct path, but now it gives the error: "Cannot load OCI DLL: C:\oracle\product.2.0\client_2\BIN\oci.dll" Even though oci.dll is in that directory. How to fix Cannot load OCI DLL: D:\oracle\instantclient_10_2\oci.dll forms60.vrf(78): OS_ERROR while getting value Path how to fix runtime report oracle developer 6i for windows 64 bit How to automate change x,y position item on database block (oracle developer. It might be possible that the oci.dll file may be corrupt or may not exist on the correct path. 3. May be possible that oci.dll may not be correct version such as 32bit s/w will load a 32bit. Cannot load OCI DLL: C:\app\ \product.2.0\client_1\oci.dll Sign In Required You need to be signed in and under a current maintenance contract to view premium knowledge articles. "The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Caution: We do not recommend downloading oci.dll from "DLL download" sites. These sites distribute DLL files that are unapproved by the official oci.dll file developer, and can often be bundled with virus-infected or other malicious files. Email does not seem to be working as my reply did not show up - so here is a copy via web - so you may see duplicates: You need to make sure that your Toad bit-size matches your Oracle home bit-size.