If so, do I have to create a new connection and set it on the pool ? cond1 && (cond2 || cond3 || cond4) rather than (cond1 && cond2) || (cond1 && cond3) || (cond1 && cond4) Thanks, Matt by mpassell. He received his education at Chalmers University of Technology in Gothenburg, Sweden where he majored in Computer Science and Computer Engineering. 4Rating Twitter Delicious Digg Tags: connection pool, DBCP, high-concurrency, Tomcat Hide Permalink Phil Steitz added a comment - 08/Mar/08 23:49 The lock contention issue here should be resolved by the changes in pool 1.4. this content
Let's look at the most typical configuration:
I tried your suggestion of increasing maxIdle to 10 and it worked. Hence new calls were not able to get the DBConnection from the connection pool. This doesn't look like a database driver from the database vendor.
jdbc-pool is mentioned frequently in the Tomcat changelog and the confusion is crazy. A negative number means no limit if that's what you'reafter. Each time a statement is prepared or a query is executed, the timer will reset the abandon timer on the connection pool. Comment Posted on June 19, 2012 02:32 PM reply Comment Karma: Neutral autoReconnect=true Found having autoreconnect=true within the url connection line produce exceedingly high time in sql queries.
Upon restarting the web server, things start working properly. It does not look like the actual bug report ed is DBCP-related. The application uses four connection pools and many connections with > a lot of concurrent transactions. see this here Ben Souther Sheriff Posts: 13411 I like...
You need to ensure that all JDBC resources are acquired and closed in the shortest possibe scope in a try-finally block. This is not likely related to your problem, but if you are using a recent dbcp nightly, you should be using pool 1.3 (release version) rather than 1.2. But again after little longer than usual, we had the same pbm. You've turned an awful month into a good month.
http://forum.springsource.org/showthread.php?127192-Injecting-transaction-manager-on-MYSQL-XA-datasource-which-is-using-Tomcat-Jdbc-Pool by dmikusa. Check This Out similary to mysql ... > > The ERROR message: > org.apache.torque.TorqueException: org.apache.commons.dbcp.SQLNestedException: Could not retrieve connection info from pool > at org.apache.torque.TorqueInstance.getConnection(TorqueInstance.java:825) > bye Thoralf > -----Ursprüngliche Nachricht----- > Von: Eduardo Kinto [mailto:[hidden email]] > Gesendet: Mittwoch, 2. Ensure that the database is runningand if so, check the database connection parameters in the konakart.properties file under WEB-INF/classes.
Comment Posted on June 4, 2010 03:14 AM reply Comment Karma: Neutral Where to get releases Hi, There have, as yet, been no official releases of jdbc-pool from the ASF. http://sinistro.org/could-not/could-not-instantiate-c3p0-connection-pool-java-lang-nullpointerexception.html Another interesting way of retrieving the underlying connection is Connection con = ds.getConnection(); Connection underlyingconnection = con.createStatement().getConnection(); This is because jdbc-pool does not proxy statements by default. similary to mysql ... > > > > The ERROR message: > > org.apache.torque.TorqueException: > > org.apache.commons.dbcp.SQLNestedException: Could not retrieve > > connection info from pool > > I tried your suggestion of increasing maxIdle to 10 and it worked.
This way, the 5 minute batch job, doing lots of queries and updates, will not timeout. The connection pool is included as of 7.0.22, so it ships with Apache Tomcat. Cause: org.apache.commons.dbcp.SQLNestedExc eption: Could not retrieve connection info from pool Caused by: org.apache.commons.dbcp.SQLNestedException: Could not retrieve connection info from pool at db.sqlmapdao.BaseSqlMapDao.executeQueryForObject(BaseSqlMapDao.java:98) at db.sqlmapdao.TsuhoMessageKakuninSqlMapDao.getEmcCommonMailSessionBySessionID(TsuhoMessageKakuninSqlMapDao.java:36) at sun.reflect.GeneratedMethodAccessor194.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324)
posted 11 years ago Dear Mr. For those rare instances where there are significantly more active connections, I would want them to be release as soon as they are no longer needed. Show Henri Yandell added a comment - 26/Jan/07 00:54 Agreed - seems to be that the JDBC driver/db just doesn't like the amount of activity. The pool sweeper is a background thread that can test idle connections and resize the pool while the pool is active.
I followed your advice under "Validating Connections" to make the pool timeout connections before the database does, using: minIdle = "0" timeBetweenEvictionRunsMillis = "30000" minEvictableIdleTimeMillis = "60000" For testing purposes I My Torque.properties file configuration is as follows:- torque.dsfactory.cpm.factory=org.apache.torque.dsfactory.SharedPoolDataSourceFactory torque.dsfactory.cpm.pool.maxActive=10 torque.dsfactory.cpm.pool.maxWait=60 torque.dsfactory.cpm.pool.testOnBorrow=true torque.dsfactory.cpm.pool.validationQuery=SELECT 1 from dual torque.dsfactory.cpm.connection.driver = oracle.jdbc.driver.OracleDriver I am getting the following error:- Caused by: org.apache.commons.dbcp.SQLNestedException: Could not retrieve connection Caused by: org.apache.commons.dbcp.SQLNestedException: Could not >> retrieve connection info from pool >> at >> org.apache.commons.dbcp.datasources.SharedPoolDataSource.getPooledConnectionAndInfo(SharedPoolDataSource.java:169) >> at >> org.apache.commons.dbcp.datasources.InstanceKeyDataSource.getConnection(InstanceKeyDataSource.java:631) >> check my blog Such round trips can have severe performance impacts for applications that use connections very frequently for very short/fast operations.
Hope this helps Manikandan Jayaraman Ranch Hand Posts: 230 posted 11 years ago May I know where should I configure my Pool Size? Only after several minutes it returns in the TIME_WAITING status and the log shows out the closed connection exception. thanksOn 8/12/07, fusion35 wrote:context.xml :