What is maxIdle in Tomcat?
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. (
What is Tomcat maxActive?
maxActive: The maximum number of active connections that can be allocated from this pool at the same time. The default value is 100. It’s important for the database side when you need to make a capacity plan for Database servers.
What is minEvictableIdleTimeMillis?
minEvictableIdleTimeMillis: The minimum amount of time an object may sit idle in the pool before it is eligible for eviction. This value needs to be determined basis on the type of application, like for an eCommerce or banking application the value would be different as compared to a reporting application.
What is Max idle connections?
Maximum number of idle connections: The default maximum is 8 connections.
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 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 abandoned connection?
Abandoned connections are the connection used by application to do some task but application missed to close them or there was some exception in the process that they weren’t closed.
What is idle DB connection?
DB object is a pool of many database connections which contains both ‘in-use’ and ‘idle’ connections. A connection is marked as in-use when you are using it to perform a database task, such as executing a SQL statement or querying rows. When the task is complete the connection is marked as idle.
How does Tomcat measure performance?
There are many ways to monitor a Tomcat application server. Java Management Extension (JMX) interface can be used to collect metrics about the server. Application logs can be monitored to determine errors that happen. The application process can be tracked to determine times when the server restarted.