oracle_sqldba is not working on Linux 8, python 3.6.8
Need replace
[sout, serr] = sql_process.communicate(input = sql_cmd)

to
[sout, serr] = sql_process.communicate(input=sql_cmd.encode('utf-8'))
sout = sout.decode('utf-8')
serr = serr.decode('utf-8')