connect oracle 12c from arcgis for desktop and server 10.3.1

[ÖmerÜNSAL]

Hi,

Problem: We can not connect to oracle 12c db from ArcGIS desktop and server 10.3.

db server info: Oracle 12c installed on Red Hat Enterprise Linux Server 7.3 OS

GIS Server:  arcgis for desktop and server 10.3.1 Installed on the same machine (windows server 2012 r2)

Oracle client info: oracle 12c 64x and 32x client installed on gis server. Oracle 12c 64x client before 32x oracle client on windows PATH Variable.

Other info

- Oracle DB and listener running, we connected oracle db from sql developer.

- We have moved oracle 11g db (with full backup) to new oracle 12c.

arcgis for desktop and server Connection errors attached. 

"Database Connection

Failed to connect to the specified server. underlying DBMS error [unknown errorNo   extended error.]

[AlexandraDubovis2]

We have similar Issues:

I can connect to the Oracle database( not a geodatabase)  from SQL Developer  or  ARCCatalog 10.2.2,

but can't connect using ArcCatalog 10.6.1. 

Have no issues to connect from ArcCatalog 10.6.1. to the Oracle Geodatabases.

All our databases are 11g.

Thanks,

Alex

[VinceAngelo]

Since this is a new question in a different environment, it really ought to be asked as a new question.