Sometimes you will get below error in Administrator.log,domainutility.log file related to database.
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2019 Jul 29 09:29:42:730 GMT +0530 DU Error [DomainUtility] AESDKJ-0000 java.lang.Exception: java.sql.SQLException: ORA-28000: the account is locked

    at com.tibco.administrator.domain.DomainConfiguration.getDBProductName(DomainConfiguration.java:1763)
    at com.tibco.administrator.domain.DomainConfiguration.createDbDomainFiles(DomainConfiguration.java:1199)
    at com.tibco.administrator.domain.DomainConfiguration.joinDomain(DomainConfiguration.java:1090)
    at com.tibco.administrator.du.task.addmachine.JoinDomainTask.joinDomain(JoinDomainTask.java:275)
    at com.tibco.administrator.du.task.addmachine.JoinDomainTask.execute(JoinDomainTask.java:239)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.tibco.administrator.wizard.progress.Trampoline.invoke(Trampoline.java:96)
    at com.tibco.administrator.wizard.progress.BusyWait.run(BusyWait.java:267)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.sql.SQLException: ORA-28000: the account is locked
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java.sql.SQLException: ORA-28000: the account is locked

All

Above error indicates oracle user account locked, please check with your DBA and get the user account unlocked and perform intended operation.