https://community.cloudera.com/t5/Support-Questions/Oozie-database-access-problem/m-p/194087#M156147 <P>Thanks for your information. Yes I totally agree with what your said.</P><P>And I have executed the command before installation.</P><P>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '***' WITH GRANT OPTION;</P><P> GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY '***' WITH GRANT OPTION; flush privileges;</P><P>The problem still exits. But the function is ok.</P> Thu, 19 Jul 2018 16:59:25 GMT 393219974 2018-07-19T16:59:25Z