unable to reinstall ORDS Beta 3.0 after uninstalling it

Tried to reinstall ORDS Beta 3.0 after uninstalling it but got below error. Pls provide clean steps to reinstall. Thx.

java.lang.reflect.InvocationTargetException

        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

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

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

        at java.lang.reflect.Method.invoke(Unknown Source)

        at oracle.dbtools.jarcl.Entrypoint.main(Entrypoint.java:58)

Caused by: java.io.IOException: Error executing script: ords_create_rest_users.sql Error: ORA-00922: missing or invalid option

Error starting at line : 48 in command -

create user ORDS_PUBLIC_USER identified by xx account unlock default tablespace USERS temporary tablespace TEMP

Error at Command Line : 48 Column : 54

Error report -

SQL Error: ORA-00922: missing or invalid option