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From "Kathey Marsden (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-4200) client side OutOfMemoryError running derbnetclientmats:jdbcapi/derbyStress
Date Wed, 29 Apr 2009 16:23:30 GMT
client side OutOfMemoryError running derbnetclientmats:jdbcapi/derbyStress
--------------------------------------------------------------------------

                 Key: DERBY-4200
                 URL: https://issues.apache.org/jira/browse/DERBY-4200
             Project: Derby
          Issue Type: Bug
          Components: Network Client
    Affects Versions: 10.5.1.2
         Environment: java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pxi32devifx-20070806 (SR5a))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Linux x86-32 j9vmxi3223-20070426 (JIT enabled)
J9VM - 20070420_12448_lHdSMR
JIT  - 20070419_1806_r8
GC   - 200704_19)
JCL  - 20070725
SUSE linux running on vmware.

            Reporter: Kathey Marsden


On the nightly run for 4/27 - 10.5.1.2 - (769232), I saw client jdbcapi/derbystress.java 
run out of heap space.   The test has not failed like this before on the same machine with
the same JVM, and the one checkin on that day DERBY-3991 could not account for this failure.

I will attach the javacore and heapdump.  Taking a quick look at the heap dump, it seems to
have a lot of client side Statement objects, which seems to be just the leak the test is checking
for.  Note: the test runs with 64MB heap.  It would be interesting to run with other jvms
and force a gc() and a heap dump at this point in the test and see if we still have a lot
of Statement objects or if this is a specific platform/JVM issue.

The trace at the time of failure was :
1XMCURTHDINFO  Current Thread Details
NULL           ----------------------
3XMTHREADINFO      "main" (TID:0x0808D300, sys_thread_t:0x0805CBC8, state:R, native ID:0x0000644F)
prio=5
4XESTACKTRACE          at org/apache/derby/client/am/Cursor.allocateCharBuffer(Bytecode PC:77(Compiled
Code))
4XESTACKTRACE          at org/apache/derby/client/net/NetStatementReply.parseSQLDTARDarray(Bytecode
PC:77(Compiled Code))
4XESTACKTRACE          at org/apache/derby/client/net/NetStatementReply.parseQRYDSC(Bytecode
PC:10(Compiled Code))
4XESTACKTRACE          at org/apache/derby/client/net/NetStatementReply.parseOpenQuery(Bytecode
PC:104(Compiled Code))
4XESTACKTRACE          at org/apache/derby/client/net/NetStatementReply.parseOPNQRYreply(Bytecode
PC:14(Compiled Code))
4XESTACKTRACE          at org/apache/derby/client/net/NetStatementReply.readOpenQuery(Bytecode
PC:6(Compiled Code))
4XESTACKTRACE          at org/apache/derby/client/net/StatementReply.readOpenQuery(Bytecode
PC:7(Compiled Code))
4XESTACKTRACE          at org/apache/derby/client/net/NetStatement.readOpenQuery_(Bytecode
PC:11(Compiled Code))
4XESTACKTRACE          at org/apache/derby/client/am/Statement.readOpenQuery(Bytecode PC:6(Compiled
Code))
4XESTACKTRACE          at org/apache/derby/client/am/Statement.flowExecute(Bytecode PC:581(Compiled
Code))
4XESTACKTRACE          at org/apache/derby/client/am/Statement.executeQueryX(Bytecode PC:3(Compiled
Code))
4XESTACKTRACE          at org/apache/derby/client/am/Statement.executeQuery(Bytecode PC:3(Compiled
Code))
4XESTACKTRACE          at org/apache/derbyTesting/functionTests/tests/jdbcapi/derbyStress.testDerby3316(derbyStress.java:156)
4XESTACKTRACE          at org/apache/derbyTesting/functionTests/tests/jdbcapi/derbyStress.main(derbyStress.java:57(Compiled
Code))


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