Mysql JDBC connection error for ambari installation

[#1]

sudo apt-get install libmysql-java
Reading package lists... Done
Building dependency tree
Reading state information... Done
libmysql-java is already the newest version (5.1.45-1).
0 upgraded, 0 newly installed, 0 to remove and 92 not upgraded.

/usr/jdk64/jdk1.8.0_112/bin/java -cp /usr/lib/ambari-agent/DBConnectionVerification.jar:/usr/share/java/mysql-connector-java.jar org.apache.ambari.server.DBConnectionVerification "jdbc:mysql://XXXXXX:3306/ambari" "ambari" "password" com.mysql.jdbc.Driver
ERROR: Unable to connect to the DB. Please check DB connection properties.
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver

[#2]

Again its getting the same error

#/usr/jdk64/jdk1.8.0_112/bin/java -cp
/usr/lib/ambari-agent/DBConnectionVerification.jar:/usr/share/java/mysql-connector-java-5.1.37.jar
org.apache.ambari.server.DBConnectionVerification "jdbc:mysql://
xxxxxxx:3306/ambari" "ambari" "xxxxx" com.mysql.jdbc.Driver
ERROR: Unable to connect to the DB. Please check DB connection properties.
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications
link failure
The last packet sent successfully to the server was 0 milliseconds ago. The
driver has not received any packets from the server.




#ambari-server setup --jdbc-db=mysql
--jdbc-driver=/usr/share/java/mysql-connector-java-5.1.37.jar
Using python /usr/bin/python
Setup ambari-server
Copying /usr/share/java/mysql-connector-java-5.1.37.jar to
/var/lib/ambari-server/resources/mysql-connector-java-5.1.37.jar
Creating symlink
/var/lib/ambari-server/resources/mysql-connector-java-5.1.37.jar to
/var/lib/ambari-server/resources/mysql-connector-java.jar
If you are updating existing jdbc driver jar for mysql with
mysql-connector-java-5.1.37.jar. Please remove the old driver jar, from all
hosts. Restarting services that need the driver, will automatically copy
the new jar to the hosts.
JDBC driver was successfully initialized.
Ambari Server 'setup' completed successfully.

[#3]

@Manoj690 

1. Can you remove password from previous comment. Just to avoid escalation of security standards.
2. Can you share the commands you executed previously?

[#4]

It gets error because i already created this user.

 
mysql> CREATE USER 'ambari'@'%' IDENTIFIED BY 'xxxxxxx';
ERROR 1396 (HY000): Operation CREATE USER failed for 'ambari'@'%'
mysql> GRANT ALL PRIVILEGES ON *.* TO 'ambari'@'%';
Query OK, 0 rows affected (0.00 sec)

mysql> CREATE USER 'ambari'@'localhost' IDENTIFIED BY 'xxxxxx';
ERROR 1396 (HY000): Operation CREATE USER failed for 'ambari'@'localhost'
mysql> GRANT ALL PRIVILEGES ON *.* TO 'xxxxxx'@'localhost';
ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
mysql> CREATE USER 'ambari'@'xxxxxx' IDENTIFIED BY 'xxxxxx';
ERROR 1396 (HY000): Operation CREATE USER failed for 'ambari'@'xxxxxxx'
mysql> GRANT ALL PRIVILEGES ON *.* TO 'ambari'@'xxxxxxx';
Query OK, 0 rows affected (0.00 sec)

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)

mysql> CREATE USER 'ambari'@'%' IDENTIFIED BY 'xxxxxxxx';
ERROR 1396 (HY000): Operation CREATE USER failed for 'ambari'@'%'
mysql> GRANT ALL PRIVILEGES ON *.* TO 'ambari'@'%';
Query OK, 0 rows affected (0.00 sec)

mysql>
mysql>
mysql> GRANT ALL PRIVILEGES ON *.* TO 'ambari'@'localhost';
Query OK, 0 rows affected (0.00 sec)

mysql> CREATE USER 'ambari'@'xxxxx' IDENTIFIED BY 'xxxx';
ERROR 1396 (HY000): Operation CREATE USER failed for 'ambari'@'xxxxxx'
mysql> GRANT ALL PRIVILEGES ON *.* TO 'ambari'@'xxxxxxxx';
Query OK, 0 rows affected (0.00 sec)

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.01 sec)