I have installed PLSQLDeveloper 15.0.4.2064 (64bit-trial) on a SUSE Linux 15.5 with Wine 8.0 (as Windows 7 emulation). You have to install the Oracle Instantclient for Windows on Wine too (unzip all in a folder of the drive C:, set the correct folder of oci.dll within the PLSQL settings). Also I...