Unable to connect to mysql through JDBC connector through Tomcat or externally.

Posted by iftrue on Server Fault See other posts from Server Fault or by iftrue
Published on 2009-12-01T22:14:30Z Indexed on 2010/03/15 20:30 UTC
Read the original article Hit count: 419

Filed under:

mysql

|

tomcat

|

jdbc

I've installed a stock mysql 5.5 installation, and while I can connect to the mysql service via the mysql command, and the service seems to be running, I cannot connect to it through spring+tomcat or from an external jdbc connector.

I'm using the following URL:

jdbc:mysql://myserver.com:myport/mydb

with proper username/password, but I receive the following message:

server.com: 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.

and tomcat throws:

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.
    sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)

Which seems to be the same issue as if I try to connect externally.

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