Amrit created VELOCITY-965:
------------------------------
Summary: Velocity 1.7 vs velocity 2.3: Getting thread
synchronization issue
Key: VELOCITY-965
URL: https://issues.apache.org/jira/browse/VELOCITY-965
Project: Velocity
Issue Type: Bug
Components: Engine
Affects Versions: 2.3
Reporter: Amrit
Recently we migrated from Velocity 1.7 to Velocity 2.3. We see the below error
intermittently which is a possible thread synchronization issue with Velocity
Engine. The resultset is getting closed while another thread is making use of
it.
2023-04-15 10:36:33.472 ERROR [org.apache.velocity.loader.ds] \{344} -
DataSourceResourceLoader: database problem while getting timestamp of
'xyz_abc':
java.sql.SQLException: Closed Resultset: next
at
oracle.jdbc.driver.InsensitiveScrollableResultSet.ensureOpen(InsensitiveScrollableResultSet.java:109)
~[ojdbc8.jar:12.2.0.1.0]
at
oracle.jdbc.driver.InsensitiveScrollableResultSet.next(InsensitiveScrollableResultSet.java:398)
~[ojdbc8.jar:12.2.0.1.0]
at
weblogic.jdbc.wrapper.ResultSet_oracle_jdbc_driver_ForwardOnlyResultSet.next(Unknown
Source) ~[CodeGenerator.class:12.2.1.3]
at
org.apache.velocity.runtime.resource.loader.DataSourceResourceLoader.readLastModified(DataSourceResourceLoader.java:326)
~[velocity-engine-core-2.3.jar:2.3]
at
org.apache.velocity.runtime.resource.loader.DataSourceResourceLoader.getLastModified(DataSourceResourceLoader.java:240)
~[velocity-engine-core-2.3.jar:2.3]
at
org.apache.velocity.runtime.resource.ResourceManagerImpl.loadResource(ResourceManagerImpl.java:446)
~[velocity-engine-core-2.3.jar:2.3]
at
org.apache.velocity.runtime.resource.ResourceManagerImpl.getResource(ResourceManagerImpl.java:346)
~[velocity-engine-core-2.3.jar:2.3]
at
org.apache.velocity.runtime.RuntimeInstance.getTemplate(RuntimeInstance.java:1677)
~[velocity-engine-core-2.3.jar:2.3]
at
org.apache.velocity.runtime.RuntimeInstance.getTemplate(RuntimeInstance.java:1656)
~[velocity-engine-core-2.3.jar:2.3]
at
org.apache.velocity.app.VelocityEngine.getTemplate(VelocityEngine.java:314)
~[velocity-engine-core-2.3.jar:2.3]
Reference:
https://stackoverflow.com/questions/2794167/is-resultset-thread-safe
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