Managing Tomcat Connections - Newbie
Hi all! I am using Tomcat (4.1.24) through my app vendor. I want to be able to manage my connections from the command line. I have found some info on ant and being able to do things like start/stop/reload/etc. I have not seen how this can be applied to managing connections. Here is my problem in a nut shell: When Tomcat starts, I get a minimum number of connections, let's say this is 2 and a maximum of 20. What is happening is that Tomcat is opening new sessions each and every time that a new session is requested. This number eventually reaches 20. At that point, I may have only two busy sessions and the remaining 18 are idle. These idle sessions are considered as resources connected to my database. I have top keep the number of resources down as low as possible. These idle sessions need to be trimmed if they have been in an idle state for too long. Is there any way of doing this with Tomcat from the command line? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Managing Tomcat Connections - Newbie
I can certainly shorten the session timeout. When a user connects to the application, this does not generate a any activity in Tomcat. When the user accesses a program, then the user is using a connection. This connection is part of a connection pool. What I find odd is that the connection used is not the oldest idle session, but a new connection is created (if the max has not been reached). On top of this, the minimum idle sessions do not get used unless the max has been reached and all of the sessions above min are busy, Is this the way Tomcat functions or just the way the application is accessing Tomcat? --- Shapira, Yoav [EMAIL PROTECTED] wrote: Hi, There's no way to manage connections from the command line, and you probably don't want to do it anyways. Consider: - Using shorter session timeouts (change from the default 30 minutes to 3 for example), - Redesigning your app so that a session doesn't have a one to one correlation with a database connection. That leads to horrible scalability anyhow. Use a connection pool. Yoav Shapira Millennium Research Informatics -Original Message- From: David Langschied [mailto:[EMAIL PROTECTED] Sent: Monday, April 12, 2004 10:02 AM To: [EMAIL PROTECTED] Subject: Managing Tomcat Connections - Newbie Hi all! I am using Tomcat (4.1.24) through my app vendor. I want to be able to manage my connections from the command line. I have found some info on ant and being able to do things like start/stop/reload/etc. I have not seen how this can be applied to managing connections. Here is my problem in a nut shell: When Tomcat starts, I get a minimum number of connections, let's say this is 2 and a maximum of 20. What is happening is that Tomcat is opening new sessions each and every time that a new session is requested. This number eventually reaches 20. At that point, I may have only two busy sessions and the remaining 18 are idle. These idle sessions are considered as resources connected to my database. I have top keep the number of resources down as low as possible. These idle sessions need to be trimmed if they have been in an idle state for too long. Is there any way of doing this with Tomcat from the command line? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Managing Tomcat Connections - Newbie
Since I am a newbie, I may not be getting the point across effectively by mixing terms. I have the ability to go to my connection manager and see a graphic representation of the current connections be they idle, busy, or initializing. Therefore, please disregard the term session. What I am referring to is these connections. On the other point of connection pool, I may be wrong, via terminology, on this as well. I have these connections out there and they are connected to my database and waiting for activity. If this is not a connection pool, I need to find out more about this method. --- Shapira, Yoav [EMAIL PROTECTED] wrote: Hi, What I find odd is that the connection used is not the oldest idle session Please clarify this, as a connection is not a session. If you're using a tomcat-managed connection pool, you're most likely using DBCP. The full docs for DBCP, which include significant tuning abilities regarding connection usage and creation, are at http://jakarta.apache.org/commons/dbcp/. Yoav Shapira This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Starting and stopping connections in Tomcat 4.2
Hi all! I have an app that uses Tomcat to make connections to a Progress database. They have a web based tool to manage these connections, but I would like to be able to control these connections from the command line. Does Tomcat have utilities to manage these connections from the command line? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
