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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 29859] New: - oracle connections in tomcat connection pool not reused
Date Tue, 29 Jun 2004 10:55:22 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=29859

oracle connections in tomcat connection pool not reused

           Summary: oracle connections in tomcat connection pool not reused
           Product: Commons
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: Critical
          Priority: Other
         Component: Dbcp
        AssignedTo: commons-dev@jakarta.apache.org
        ReportedBy: tc@disforce.be


My configuration :  
  
Dell PowerEdge 2650  
Mandrake Linux 10 (kernel 2.4)  
Sun Java  1.4.2_04  
Oracle 10g  
JDBC Drivers for oracle 10g (ojdbc14.jar)  
Apache 2.0.48  
Use of mod_jk2 and the apj13 coyote connector  
http application uses http sessions  
  
  
Hello there,  
  
  
I'm having a very serious problem with my oracle database connections.  
To allow reuse of open connection we use a database connection pool.  
  
The configuration in the server.xml is the following :  
  
<Context debug="0" docBase="macq" path="/macq" reloadable="false">  
                <Resource name="ed/macq" auth="Container"  
type="javax.sql.DataSource"/>  
                <ResourceParams name="ed/macq">  
                <parameter>  
                        <name>factory</name>  
                                 
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>  
                </parameter>  
                <parameter>  
                        <name>driverClassName</name>  
                        <value>oracle.jdbc.driver.OracleDriver</value>  
                </parameter>  
                <parameter>  
                        <name>url</name>  
                         
<value>jdbc:oracle:thin:@turgon_02.disforce.be:1521:turgon2</value>  
                </parameter>  
                <parameter>  
                        <name>username</name>  
                        <value>macqloader</value>  
                </parameter>  
                <parameter>  
                        <name>password</name>  
                        <value>********</value>  
                </parameter>  
                <parameter>  
                        <name>maxActive</name>  
                        <value>300</value>  
                </parameter>  
                <parameter>  
                        <name>maxIdle</name>  
                        <value>10</value>  
                </parameter>  
                <parameter>  
                        <name>maxWait</name>  
                        <value>10000</value>  
                </parameter>  
                ...  
  
The behaviour we see is very strange.  
When starting up tomcat, we see a number of connections being opened.  
That is rather normal. Now for every jsp with database activity a new database  
connection is added until the maximum number of connections is achieved (300  
in this case).   
  
In this first phase the maximum number of users is 5, logically we should see  
no more than five concurrent database connections open.  
  
When looking in TOAD, we see all database connections as inactive so they  
should be reused.  
  
In a second phase of my project a deployment on hundreds of workstations will  
start. I cannot continue with this if my database connections are not being  
resused.  
  
Any help would be greatly appreciated.  
  
Tom Colman  
Belgacom  
CBS/DIS/PTE

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