What is maxActive?

the maximum number of active connections that can be allocated from this pool at the same time. This attribute is used to limit the number of connections a pool can have open.

What is DBCP connection pool?

Connection pooling is a pattern used by software applications to connect to databases using a pre-created set of reusable connection objects. In this article, you’ll learn how to create a database connection pool using the Java Database Connectivity (JDBC) API and the Apache DBCP pooling library.

What is Max idle connection?

maxIdle. (int) The maximum number of connections that should be kept in the pool at all times. Default value is maxActive : 100 Idle connections are checked periodically (if enabled) and connections that been idle for longer than minEvictableIdleTimeMillis will be released. ( also see testWhileIdle )

What is tomcat DBCP?

Tomcat-dbcp is the original re-package of apache commons pool included in Tomcat distribution. To avoid class clash package was renamed to org.apache.tomcat.dbcp.dbcp.*

What is DB idle timeout?

Idle Timeout: Maximum time in seconds that a connection can remain idle in the pool. After this time, the pool can close this connection. This property does not control connection timeouts on the database server. For best performance, set Idle Timeout to zero (0) seconds, so that idle connections will not be removed.

What is maxActive in context xml?

maxActive: The maximum number of active connections that can be allocated from this pool at the same time. The default value is 100.

What is the default thread pool count in tomcat server?

By default, Tomcat sets maxThreads to 200, which represents the maximum number of threads allowed to run at any given time. You can also specify values for the following parameters: minSpareThreads : the minimum number of threads that should be running at all times. This includes idle and active threads.

What should users know before upgrading to DBCP 2?

Users upgrading to 2.x should be aware that the Java package name has changed, as well as the Maven co-ordinates, since DBCP 2.x is not binary compatible with DBCP 1.x. Users should also be aware that some configuration options (e.g. maxActive to maxTotal) have been renamed to align them with the new names used by Commons Pool 2.

What is maxmaxactive and maxidle in SQL Server?

maxActive (int) The maximum number of active connections that can be allocated from this pool at the same time. The default value is 100 maxIdle (int) The maximum number of connections that should be kept in the pool at all times.

What is maxactive for Tomcat connection pool?

Annoyingly this setting is still called “maxActive” for the Tomcat connection pool. This setting controls the total number of connections to the DB, so it makes huge performance difference.

What is the commons-dbcp2 package?

This Commons package provides an opportunity to coordinate the efforts required to create and maintain an efficient, feature-rich package under the ASF license. The commons-dbcp2 package relies on code in the commons-pool2 package to provide the underlying object pool mechanisms that it utilizes.