let's check whether your Oracle 12.1 is patched properly. It needs several patches to work with 1C:Enterprise. Here's an excerpt from the System requirements.
Linux version 12.1.0.2 is supported if the following patches are installed:
19078326, OPatch 12.1.0.8 (patch 6880880), then 21447820, then 21068507, then 20954292.
Noncluster installation of patch 21447820 only requires element 21359749 (21447820 directory includes several subdirectories, 21359749 is one of these subdirectories).
There are three types of patch 20954292 (one for version 11.2.0.4 and two for versions 12.1.0.2), you need the one that is intended for version 12.1.0.2.7 (the other one is for version 12.1.0.2.0; the right one has DBEngSysandDBIM in its name).