timeout « mysql « Java Database Q&A

1. Troubleshooting consistent "SQLException: Lock wait timeout exceeded"    stackoverflow.com

I have an application running Quartz 1.6.1 w/persistent job store, with MySQL 5.1 as the DB. This application used to boot up okay in Tomcat6. At some point, it began throwing ...

2. MySql.Data.MySqlClient.MySqlException: Timeout expired    stackoverflow.com

In recent times, a particular page in my web app throws the Exception Details: MySql.Data.MySqlClient.MySqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or ...

3. Wait Timeout setting of mysql and JDBC error    stackoverflow.com

I see the following error in the log:

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed.Connection was implicitly closed by the driver.

4. Should i disconnect/reconnect to MySQL server often?    stackoverflow.com

My case is that i have an application made with java that [by now] connects only once to MySQL server and keeps connected. It sends queries to MySQL randomly and it ...

5. Transactions fails due to "Lock wait timeout exceeded; try restarting transaction"    stackoverflow.com

When trying to update a certain table, it fails with the exception of: "Lock wait timeout exceeded; try restarting transaction". Some info: I have to tables, profile and profile_units. ID is a ...

6. How to restart transaction after deadlocked or timed out in JAVA?    stackoverflow.com

How to restart a transaction (so that it executes at least once) when we get:

( com.mysql.jdbc.exceptions.jdbc4.MySQLTransactionRollbackException:Deadlock found when trying to get lock; Try restarting transaction ) OR ( ...

7. timeout in MYSQL    stackoverflow.com

I have a java application that has long running processes and interact with db. It keeps getting the following:

The last packet successfully received from the server was 3,601,168 milliseconds ago. ...

8. Java Mysql Timeout Error    stackoverflow.com

tried everything

• connectTimeout=0&socketTimeout=0&autoReconnect=true
• changed wait_timeout to 31536000 and interactive_timeout= 286399969

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet successfully received from the server was 70,399,485 milliseconds ago

9. Setting the MySql wait_timeout session variable    stackoverflow.com

I am currently working in a java program involving mysql. I encountered a problem with these message:

Communications link failure. The last packet successfully received from the server was ...

10. JDBC Timeout issue with MySQL    coderanch.com

Despite having tried everything suggested, I'm still getting connection failures after 8 or so hours from my Servlet using Connector/J and MySQL. Per David's suggestion, I added ?autoReconnect=true to the properties file that has the database login information. I also added the .newInstance() method call to the database connection code (I've read things that say to use .newInstance() and others that ...