SOA Domain failed during the AdminServer start up

INFO: Configuring the Service Table DataSource...

INFO: Getting Database Defaults...

Error: getDatabaseDefaults() failed. Do dumpStack() to see details.

Error: runCmd() failed. Do dumpStack() to see details.

Problem invoking WLST - Traceback (innermost last):

  File "/u01/oracle/container-scripts/createDomain.py", line 624, in ?

  File "/u01/oracle/container-scripts/createDomain.py", line 157, in createDomain

  File "/u01/oracle/container-scripts/createDomain.py", line 374, in extendSoaDomain

  File "/u01/oracle/container-scripts/createDomain.py", line 311, in configureJDBCTemplates

  File "/tmp/WLSTOfflineIni7524882329358641379.py", line 263, in getDatabaseDefaults

  File "/tmp/WLSTOfflineIni7524882329358641379.py", line 19, in command

Failed to build JDBC Connection object:

        at com.oracle.cie.domain.script.jython.CommandExceptionHandler.handleException(CommandExceptionHandler.java:69)

        at com.oracle.cie.domain.script.jython.WLScriptContext.handleException(WLScriptContext.java:2983)

        at com.oracle.cie.domain.script.jython.WLScriptContext.runCmd(WLScriptContext.java:735)

        at sun.reflect.GeneratedMethodAccessor155.invoke(Unknown Source)

        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

        at java.lang.reflect.Method.invoke(Method.java:498)

com.oracle.cie.domain.script.jython.WLSTException: com.oracle.cie.domain.script.jython.WLSTException: Got exception when auto configuring the schema component(s) with data obtained from shadow table:

Failed to build JDBC Connection object:

----------------------

$ pwd

/opt/oracle/product/12.2.0.1/dbhome_1/network/admin

$ cat sqlnet.ora

NAME.DIRECTORY_PATH= (TNSNAMES, EZCONNECT, HOSTNAME)

SQLNET.INBOUND_CONNECT_TIMEOUT=300