Search Index creation fails with Oracle 12c

Problem

When creating or recreating the LUY Search Index with an Oracle 12c database the following error appears in the LOG-File:

"java.lang.IllegalStateException: Could not get property value"

Solution

Oracle 12c is only supported by LUY with the Oracle bug fix/patch No. 18430870 applied to the database.
We generally recommend applying all patches available for Oracle 12c. 

Oracle patches can be downloaded from support.oracle.com and applied with the "OPatch" utility, which is included in the Oracle installation directory.