- MYSQL JDBC CONNECTION STRING DRIVERS
- MYSQL JDBC CONNECTION STRING DRIVER
MYSQL JDBC CONNECTION STRING DRIVER
(String) The connection username to be passed to our JDBC driver to establish a connection. The driver has to be accessibleįrom the same classloader as tomcat-jdbc.jar (String) The fully qualified Java class name of the JDBC driver to be used. (String) The default catalog of connections created by this pool. If not set, the method will not be called and it defaults to the JDBC driver. (String) The default TransactionIsolation state of connections created by this pool.
MYSQL JDBC CONNECTION STRING DRIVERS
(Some drivers don't support read only mode, ex: Informix) If not set then the setReadOnly method will not be called. (boolean) The default read-only state of connections created by this pool. If not set, default is JDBC driver default (If not set then the setAutoCommit method will not be called.) (boolean) The default auto-commit state of connections created by this pool. These attributes are shared between commons-dbcp and tomcat-jdbc-pool, in some cases default values are different. This is achieved using the dataSource and dataSourceJNDI attributes. Connections can be retrieved from a, or.This is achieved using the suspectTimeout attribute. The removeAbandonedTimeout but it doesn't take any action, only reports the information. Get JMX notifications and log entries when connections are suspected for being abandoned.Close connections after they have been connected for a certain time.This is achieved using the ResetAbandonedTimer Allowing a connections that is in use for a long time to not timeout. The abandon connection timer will reset upon a statement/query activity.You can decide at what moment connections are considered abandoned, is it when the pool is full, or directly at a timeout.
Instead of closing connections directly, it can still pool connections and sizes the idle pool with a smarter algorithm.
Asynchronous connection retrieval - you can queue your request for a connection and receive a Future back. Complexity reduction has been a focus from inception. 
As bugs may occur, they will be faster to track down, and easier to fix. That has over 200 source files(last time we checked), Tomcat jdbc has a core of 8 files, the connection pool itself is about half
Extremely simple, due to the very simplified implementation, the line count and source file count are very low, compare with c3p0. High performance - we will show some differences in performance later on. Your options are endless and the interceptors are dynamic, not tied to a JDK version of a You can use interceptors to gather query stats,Ĭache session states, reconnect the connection upon failures, retry queries, cache query results, and so on. This allows you to write custom interceptors to enhance the functionality. Ability to configure custom interceptors. Very useful to setup session settings, that you want to exist during the entire time the connection is established. Run-Once query, a configurable query that will be run only once, when the connection to the database is established. When we borrow or return the connection, just not more frequent than an interval we can configure. Validation intervals - we don't have to validate every single time we use the connection, we can do this. Your runtime environment (as long as your JDBC driver does the same), even when compiled with a lower version of the JDK. Dynamic implementation of interface, will support java.sql and javax.sql interfaces for. Support for highly concurrent environments and multi core/cpu systems. Most pools will simply starve.įeatures added over other connection pool implementations If a pool is empty, and threads are waiting for aĬonnection, when a connection is returned, the pool will awake theĬorrect thread waiting. 
Retrieve the underlying connection using the. Simplified logging framework used in Tomcat. Tomcat jdbc pool is a Tomcat module, it depends on Tomcat JULI, a. Tomcat jdbc pool implements the ability retrieve a connectionĪsynchronously, without adding additional threads to the library. It's not worth rewriting over 60 classes, when a connection pool canīe accomplished with a much simpler implementation. Right version for a given JRE version or you may see This is all you need to run the connection pool itself, the Hence modifications for future requirement will require much lessĬhanges. Objects increases, the performance suffers. The number of concurrent threads attempting to borrow or return In order to be thread safeĬommons locks the entire pool for short periods during both objectĪllocation and object return. Is a replacement or an alternative to the Apache Commons DBCP
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