I'm Trying to connect my JSF project with my local MySQL DB.
In Netbeans everything runs and i can connect to MySQL. But if i try to build my project i become the error: "GlassFish Server 4.1, deploy, null, false ... The module has not been deployed."
If i try to create a new JDBC Connection Pool and ping that, i become the error:
Ping Connection Pool failed for MySQL. No password credential found.
Could it be, because my user has no password? How can i add a JDBC Connection Pool with a empty password?
I copied already the the mysql-connector-java-jar into glassfish-4.1\glassfish\lib.
there are a lot of posts with the same problem but no solution was helpful for me.
I have found the problem, it actually was because my user had no password. With a password it runs.
Related
I've added the host URL ({hash}.rackspaceclouddb.com), port 3306, and I'm using the same user and password that has access to everything via PhpMyAdmin, but I'm getting a failure when I test the connection. I understand that they run their instances on a private network, which I'm sure is causing the difficulty. Is there some trick I'm not aware of, or is it not possible?
Error message:
Failed: Communications link failure. The driver has not received any packets from the server.
In earlier versions, we've had a similar issue when establishing a connection with MySql. Please update DataGrip to the latest version. Also, make sure to download the latest MySql driver version available in DataGrip.
I have a MySQL-Database from a hostingservice (strato.de). I try to connect the JetBrains DataGrip with this MySQL Database. I tried to connect but I get everytime a timeout. So I tried it with SSH but there I got this error:
[08001] Could not create connection to database server. Attempted
reconnect 3 times. Giving up. java.io.EOFException: Can not read
response from server. Expected to read 4 bytes, read 0 bytes before
connection was unexpectedly lost.
I do not understand the problem... is the Firewall blocking the connection?
How can I connect JetBrains with my Hosted MySQL-Database?
Make sure your hosting provider exposed MySQL database port for external connections.
Have you tried to connect via MySQL Workbench?
Just in case read JetBrains help topic
I'm using Outsystems Service Studio to develop a web application. I need to configure a connection to access a local server database. I get "Connection String test failed: Unable to connect to any of the specified MySQL hosts." I just figured out I can't connect using "localhost", because the Outsystems server is not local, but I'm not able to find a solution. what is wrong? Other details:
MySQL Server is up and running
I selected MySQL in DBMS
Inserted my schema name
Inserted the username (with all privileges granted)
Inserted the user password
Tried both basic and advanced configuration. I inserted j"dbc:mysql://127.0.0.1:3306/mydb?user=outsystems2" as connection string parameters and I get "Connection String test failed: Keyword not supported.Parameter name: mysql://127.0.0.1:3306/mydb?user". I know this connection string can't work , but I'm not able to find a functioning one. I've read many guides about this configuration, but no solution was found. Thank you all for your time and help, feel free to ask for more details
Luciano,
Is your OutSystems environment on-premises or in the cloud? Either way, you need to make sure that this server is able to reach - it as connectivity - to your MySQL database server. Using localhost or 127.0.0.1 is pretty much the same thing as this is an address for the machine where the request is running, which is, in this case, the OutSystems server. Do you have the MySQL database on your local machine? This is not a good approach as you will need to have an address that won't change otherwise the connection won't be stable and you'd have to reconfigure it all the time.
Regards
I am trying to setup a test coldfusion server running on my home PC (Windows 8 Pro 64 bit). I have Coldfusion 10 installed, and mysql 5.6.10 working as well. When I try to connect them, I am getting the following error:
Connection verification failed for data source:
mydbcom.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException:
Could not create connection to database server. Attempted reconnect 3 times.
Giving up.
The root cause was that:
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException:
Could not create connection to database server. Attempted reconnect 3 times. Giving up.
I've looked all over the place, and I can't seem to figure out what I need to do to fix it.
Thanks in advance.
What's your DSN definition in CF Admin look like? Did you create a MySQL user that has access to that database, which you then used in your CF Admin DSN connection?
EDIT:
Yes, you should never connection as "root" by practice. Create a new user and give them the correct permissions to your database. I've got some instructions here if you need them.
http://iknowkungfoo.com/blog/index.cfm/2008/6/16/The-ACME-Guide-64bit-Ubuntu-804-Edition-Part-3
The trick for me was to type in the IP address for the server address when adding a new CF ADMIN DSN entry. Using local, localhost or 127.0.0.1 for the server address did not work for me.
I'm facing a perplexing problem. I've completed a jsf web app that utlizes hibernate and infinispan with Tomcat7 and tomcat-jdbc-pool as the connection pool provider.
It is being deployed to a Linode cluster w/ 2 nodes -- one database server and one production server.
I can run the app on my local environment using the exact same copy of Tomcat7 (I literally tarred the tomcat directory and promoted it to the server to debug this error) -- even when connected to the live database instance. Everything runs fine.
When I attempt to run the application from the production server I get a MySQLIO error:
Caused by: java.net.ConnectException:
Connection refused
Looking further up in the logs i see:
The last packet sent successfully to
the server was 1 milliseconds ago. The
driver has not received any packets
from the server.
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:
Communications link failure
I can connect from the command line on the prodapp server just fine -- even using tcp:
mysql -h db01 -u user -p --protocol=tcp
But it just won't work running inside the Tomcat container. I've tried all kinds of things but I'm really stumped. It just seems strange that I can connect to the database server using the same copy of Tomcat7 locally but when deployed to production the same copy of tomcat7 can't connect -- even though I can connect from the command line on that production server ... I'm stumped.
Any help is greatly appreciated.
EDIT: Solved my problem after wasting too much good life on it. The answer was I'm stupid. Thanks to everyone who tried to help. I have the app moded w/ a dev and live mode and the connection pool was reading the dev mode this whole time. What really made it confusing is that the sessionfactory was moded to live so it would actually reach the live database and initialize a connection when it started up so i could see it connecting (and running meta data queries in the mysql log), but when it actually went to grab a connection from infinispan it blew up. Oh well -- at least it's working now. Thanks again.
If you're connecting to your MySQL database server from a different box, then you need to explicitly grant permission for that user account to connect from that IP.
You can do this whilst in the command line:
GRANT ALL PRIVILEGES ON *.* TO 'username'#'ip_address'
EDIT: Granting all permissions on all tables generally isn't required, be specific about what permissions you want to grant (http://dev.mysql.com/doc/refman/5.1/en/grant.html)
To see what permissions you currently have:
USE mysql;
SELECT * FROM users;
My apologies if I'm patronising you, just that this is the most common problem that I come across.