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Posted to torque-user@db.apache.org by Travis McCauley <tw...@virginia.edu> on 2003/06/30 16:32:27 UTC
Re: Possible Connection Leak
Robert,
I'm running into your exact same problem. Did going to the jdbc2 pool fix this?
Travis McCauley
University of Virginia Library
>At first, I wasn't calling Torque at all -- I was using Jetspeed's
>security manager. Once the problem cropped up, I tried calling
>Torque directly to get a connection to test, and made sure I was
>returning the connection then.
>
>The test code didn't make it die any sooner, though.
>
>I'm going to try the jdbc2 pool.
>
>>Keeney, Thomas wrote:
>>Robert,
>>
>>I wrote a similar cron job for Jetspeed/Torque awhile back. Check your code
>>to make sure that connections retrieved for Torque are released after use.
>>In older versions of Torque you have to release connections manually if
>>you're retrieving connections from a database other than the default.
>>
>>Otherwise, I'd suggest you post the source or more details so we can
>>investigate further.
>>
>>
>>>We have an application based on Jetspeed that periodically (every
>>>5 minutes) updates the user list from another system. In testing,
>>>and for short terms, everything works perfectly. However, after
>>>about two days of continuous operation, the system can no longer
>>>make a connection to the local MySQL database, making it
>>>impossible for users to log in.
>>>
>>>MySQL has a default limit of 100 connections. We have Torque
>>>configured to a limit of 10 connections at once.
>>>
>>>It appears there's a leak in the Torque connection pool. Has
>>>anyone else run into this before? Any recommendations on where to
>>>start looking to fix it?
Re: Possible Connection Leak
Posted by adkumar <an...@slb.com>.
Travis, Robert other Torque experts,
I too am facing the same problem. I wanted to move to jdbc2pool.
But I have difficulty in making it
work. Can some one help please.
This is part of the error message when I try to initialise Torque.
DEBUG [HttpProcessor[8080][4]] (ConvertUtils.java:363) - Convert string
'true' to class 'boolean'
DEBUG [HttpProcessor[8080][4]] (ConvertUtils.java:371) - Using
converter org.apache.commons.beanutils.converters.BooleanConverter@71b4ca
DEBUG [HttpProcessor[8080][4]] (Jdbc2PoolDataSourceFactory.java:164) -
Setting datasource property: validationQuery
DEBUG [HttpProcessor[8080][4]] (ConvertUtils.java:363) - Convert string
'SELECT 1' to class 'java.lang.String'
DEBUG [HttpProcessor[8080][4]] (ConvertUtils.java:371) - Using
converter org.apache.commons.beanutils.converters.StringConverter@d21538
DEBUG [HttpProcessor[8080][4]] (Torque.java:353) - Adding a dummy entry
for default, mapped onto test
java.lang.NullPointerException
at org.apache.torque.Torque.initialize(Torque.java:240)
at org.apache.torque.Torque.init(Torque.java:406)
at org.apache.torque.Torque.init(Torque.java:386)
What am I missing.
Thanks in advance.
Anil
Here is my Torque.properties file content:
log4j.rootCategory = WARN, default
log4j.appender.default = org.apache.log4j.FileAppender
log4j.appender.default.file = torque.log
log4j.appender.default.layout = org.apache.log4j.SimpleLayout
database.default=test
database.test.adapter=oracle
## Using torque's old pool
##torque.dsfactory.test.factory=org.apache.torque.dsfactory.TorqueDataSourceFactory
##torque.dsfactory.test.pool.defaultMaxConnections=10
##torque.dsfactory.test.pool.maxExpiryTime=3600
##torque.dsfactory.test.pool.connectionWaitTimeout=10
##torque.dsfactory.test.connection.driver = oracle.jdbc.driver.OracleDriver
##torque.dsfactory.test.connection.url =
jdbc:oracle:thin:@localhost:1521:test
##torque.dsfactory.test.connection.user = test
##torque.dsfactory.test.connection.password = test
##torque.database.adapter.DBOracle=oracle.jdbc.driver.OracleDriver
## Using Jdbc2Pool
torque.dsfactory.test.factory=org.apache.torque.dsfactory.Jdbc2PoolDataSourceFactory
torque.dsfactory.test.pool.defaultMaxActive=30
torque.dsfactory.test.pool.testOnBorrow=true
torque.dsfactory.test.pool.validationQuery=SELECT 1
torque.dsfactory.test.connection.driver = oracle.jdbc.driver.OracleDriver
torque.dsfactory.test.connection.url = jdbc:oracle:thin:@localhost:1521:test
torque.dsfactory.test.connection.user = test
torque.dsfactory.test.connection.password = test
# Determines if the quantity column of the IDBroker's id_table should
# be increased automatically if requests for ids reaches a high
# volume.
torque.idbroker.cleverquantity=true
# Determines whether the managers cache instances of the business objects.
# And also whether the MethodResultCache will really cache results.
torque.manager.useCache = true
Travis McCauley wrote:
> Robert,
>
> I'm running into your exact same problem. Did going to the jdbc2 pool
> fix this?
>
> Travis McCauley
> University of Virginia Library
>
>> At first, I wasn't calling Torque at all -- I was using Jetspeed's
>> security manager. Once the problem cropped up, I tried calling Torque
>> directly to get a connection to test, and made sure I was returning
>> the connection then.
>>
>> The test code didn't make it die any sooner, though.
>>
>> I'm going to try the jdbc2 pool.
>>
>>> Keeney, Thomas wrote:
>>> Robert,
>>>
>>> I wrote a similar cron job for Jetspeed/Torque awhile back. Check
>>> your code
>>> to make sure that connections retrieved for Torque are released
>>> after use.
>>> In older versions of Torque you have to release connections manually if
>>> you're retrieving connections from a database other than the default.
>>>
>>> Otherwise, I'd suggest you post the source or more details so we can
>>> investigate further.
>>>
>>>
>>>> We have an application based on Jetspeed that periodically (every 5
>>>> minutes) updates the user list from another system. In testing, and
>>>> for short terms, everything works perfectly. However, after about
>>>> two days of continuous operation, the system can no longer make a
>>>> connection to the local MySQL database, making it impossible for
>>>> users to log in.
>>>>
>>>> MySQL has a default limit of 100 connections. We have Torque
>>>> configured to a limit of 10 connections at once.
>>>>
>>>> It appears there's a leak in the Torque connection pool. Has anyone
>>>> else run into this before? Any recommendations on where to start
>>>> looking to fix it?
>>>
>
>
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