cursor closed as a sideeffect of closing another cursor with the same name on
another connection
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Key: DERBY-787
URL: http://issues.apache.org/jira/browse/DERBY-787
Project: Derby
Type: Bug
Components: SQL
Environment: Java 1.4
Reporter: Andreas Korneliussen
Fix For: 10.1.2.1
I was writing some tests for the Scrollable updatable ResultSet feature, and
found some tests failing with
ERROR XCL07: Cursor 'SQLCUR0' is closed. Verify that autocommit is OFF.
in ResultSet.updateRow().
The test does the following:
1. set up a connection, and run a query which selects one tuple
2. update the tuple using updateXXX and updateRow
3. rollback the transaction and close the connection
Then, repeat the process, however this time use a different string in the
query. This time updateRow() may fail with the error above.
The problem has been reproduced on forward only, updatable resultsets.
Workaround:
It does not seem to fail if I
a, set another cursorname on the statement object,
b, use the same query string.
I will attach the program to reproduce the problem. Below is the output:
~:/<3>db-derby-10.1.2.1-bin/lib> java -cp
/home/ak136785/devel/derbytesting/derbytest/build/classes/:derby.jar
derbytest.CursorIsClosedIssue
1,1,19,Tuple 1
2,2,21,Tuple 2
ERROR XCL07: Cursor 'SQLCUR0' is closed. Verify that autocommit is OFF.
at org.apache.derby.iapi.error.StandardException.newException(Unknown
Source)
at
org.apache.derby.impl.sql.execute.CurrentOfResultSet.getCursor(Unknown Source)
at
org.apache.derby.impl.sql.execute.CurrentOfResultSet.openCore(Unknown Source)
at
org.apache.derby.impl.sql.execute.ProjectRestrictResultSet.openCore(Unknown
Source)
at
org.apache.derby.impl.sql.execute.NormalizeResultSet.openCore(Unknown Source)
at org.apache.derby.impl.sql.execute.UpdateResultSet.setup(Unknown
Source)
at org.apache.derby.impl.sql.execute.UpdateResultSet.open(Unknown
Source)
at org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unknown
Source)
at org.apache.derby.impl.jdbc.EmbedResultSet.updateRow(Unknown Source)
at derbytest.CursorIsClosedIssue.runTest(CursorIsClosedIssue.java:80)
at derbytest.CursorIsClosedIssue.main(CursorIsClosedIssue.java:103)
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