ora error 12154 TNS could not resolve connection

Question

Greetings,

I have connected to Oracle with Oracle SQL Developer but get an error connecting with ArcGIS Pro.

I get a Connection Error message from ArcGIS Pro.

Any suggestions or pointers to resolve this error??

Regards,

Clive

George_Thompson · Answer

Make sure that the Instant client is 64 bit. Then follow the information here on the environmental variables: https://support.esri.com/en/technical-article/000012021   just replace 32 bit with 64 bit.

That should get you going

CliveS-bimgham · Answer

Hi George,

This is the db connection, image attached.

I have Instant Client under:

C:\app\TMPGCESN\product\instantclient_19_10

I have tnsnames.ora under:

C:\app\TMPGCESN\product\instantclient_19_10
etwork\admin

I have st_shapelib.dll under:

C:\Program Files\ArcGIS\Pro\bin\x64 and C:\Program Files\ArcGIS\Pro\bin\x86

Do I need to add path in Env??

db-conn.jpg

George_Thompson · Answer

This error usually means that there is not a TNS file available or the entry for the DB is not in the TNS file.

Where is the TNS file located?

Can you provide a screenshot of the connection window in Pro?