I am receiving the Can't Initialize OCI.Error -1 when trying to log in to toad. I have downloaded the following... Oracle Instant Client 12.1.0.2 - 64 bit Microsoft Visual C++ 2010 Redistributable Package Toad 13.1.0.78 64 bit Oracle home is pointing to the correct client. I have a newer versi…

Does this help? [image] Can't initialize oci. Error -1 Toad for Oracle Do you have DynaTrace installed on the same PC? If so, there is an incompatibility between DynaTrace and 64 bit Toad on Windows 10 or Server 2016. This will be fixed in the version after 14.0. You ca…

I'm sorry...I don't understand what you're saying in your reply.

Do you have DynaTrace installed? (I edited my link in my first reply to make it more obvious. Click it for details.)

I do not have Dynatrace installed. I was thinking that an older version of TOAD would be the way to go but unfortunately I don't have one.

Don't go to an older Toad. If you have multiple Oracle clients installed but only need one, remove the one(s) that you no longer use. If you have an ORACLE_HOME environment variable set, make sure that it is correct. (Or just remove it as it is unnecessary...this should be in registry for full cl…

OK yes...I do have multiple versions of client. I will delete the others and keep the latest. As far as the environment variable set. I have TNS_ADMIN not ORACLE_HOME. Is this an issue? Also, I'm not sure if I have read and execute on OCI.DLL. I need to check with my DBA.

Keep TNS_ADMIN. Just right-click on OCI.DLL and check properties, it's in there somewhere. Most likely this is not the problem.

O no...i does say read and execute. I was on the wrong tab

I ended up uninstalling the instant client and installing 12.1 64 bit regular client. The TNSnames are correct, i can ping the database, all prereq's passed, and all paths are correct. I chose run as administrator on the toad installer and again when i tried to log in. But, I still get the can't …

Can't Initialize OCI.Error -1 when trying to log in to toad

Toad for Oracle & DevOps Toolkit

JohnDorlon October 19, 2020, 2:43pm 2

Does this help?

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Can't Initialize OCI.Error -1 when trying to log in to toad

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