PI09680: CIRCULAR TYPE DEPENDENCY IN TYPE/OBJECTTYPE CLASSES IN BCEL COULD CAUSE THREADS TO HANG

Fixes are available

APAR status

Closed as program error.

Error description

3LKMONOBJECT
com/ibm/xltxe/rnm1/xtq/bcel/generic/ObjectType@0x000000072B8A21D
0/0x000000072B8A21DC: <unowned>
3LKNOTIFYQ            Waiting to be notified:
3LKWAITNOTIFY            "SIBJMSRAThreadPool : 7"
(0x0000000035244A00)

Blocking thread has stack:
==========================
3XMTHREADINFO      "SIBJMSRAThreadPool : 7"
J9VMThread:0x0000000035244A00, j9thread_t:0x0000010028D07460,
java/lang/Thread:0x0000000721F25020, state:CW, prio=5
3XMJAVALTHREAD            (java/lang/Thread getId:0xE9,
isDaemon:true)
3XMTHREADINFO1            (native thread ID:0x20B00B7, native
priority:0x5, native policy:UNKNOWN)
3XMTHREADINFO3           Java callstack:
4XESTACKTRACE                at java/lang/Object.wait(Native
Method)
4XESTACKTRACE                at
java/lang/Object.wait(Object.java:167(Compiled Code))
4XESTACKTRACE                at
java/lang/J9VMInternals.initialize(J9VMInternals.java:236(Compil
ed
Code))
4XESTACKTRACE                at
com/ibm/xltxe/rnm1/xtq/bcel/generic/Type.<clinit>(Type.java:83)
4XESTACKTRACE                at
java/lang/J9VMInternals.initializeImpl(Native Method)
4XESTACKTRACE                at
java/lang/J9VMInternals.initialize(J9VMInternals.java:200(Compil
ed
Code))
4XESTACKTRACE                at
com/ibm/xltxe/rnm1/xylem/types/ConstructorDataType.<clinit>(Cons
tructorD
ataType.java:105)
4XESTACKTRACE                at
java/lang/J9VMInternals.initializeImpl(Native Method)
4XESTACKTRACE                at
java/lang/J9VMInternals.initialize(J9VMInternals.java:200(Compil
ed
Code))
4XESTACKTRACE                at
com/ibm/xltxe/rnm1/xylem/AbstractTypeStore.readTypes(AbstractTyp
eStore.j
ava:188)

Waiting threads has stack
=========================
3XMTHREADINFO3           Java callstack:
4XESTACKTRACE                at
com/ibm/xltxe/rnm1/xtq/drivers/XStarCompiler.loadRuntimeLibrary(
XStarCompiler.java:689)
4XESTACKTRACE                at
com/ibm/xltxe/rnm1/xtq/xpath/drivers/XPathCompiler.compile(XPath
Compiler.java:770)
4XESTACKTRACE                at
com/ibm/xltxe/rnm1/xtq/xpath/drivers/XPathPreparer.prepare(XPath
Preparer.java:242)
4XESTACKTRACE                at
com/ibm/xltxe/rnm1/xtq/xpath/drivers/XPathPreparer.prepare(XPath
Preparer.java:199)
4XESTACKTRACE                at
com/ibm/bpe/xpathservice/impl/xci/XPathServiceImpl.evaluate(XPat
hServiceImpl.java:460)
4XESTACKTRACE                at
com/ibm/bpe/xpathservice/impl/xci/XPathServiceImpl.evaluateAllow
FieldIsNotSet(XPathServiceImpl.java:430)
4XESTACKTRACE                at
com/ibm/bpe/xpatheval/BasicXPathEvaluator.evaluateAllowFieldIsNo
tSet(BasicXPathEvaluator.java:170)
4XESTACKTRACE                at
com/ibm/bpe/engine/BpelActivityKindAssign.copyFromSpecVariablePa
rtQuery(BpelActivityKindAssign.java:754)
4XESTACKTRACE                at
com/ibm/bpe/engine/BpelActivityKindAssign.copyFromSpecVariablePa
rtQuery(BpelActivityKindAssign.java:590)
4XESTACKTRACE                at
com/ibm/bpe/engine/BpelActivityKindAssign.doActivate(BpelActivit
yKindAssign.java:140)
4XESTACKTRACE                at
com/ibm/bpe/engine/BpelActivityStateInactive.activateOrSkip(Bpel
ActivityStateInactive.java:280(Compiled Code))

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server                                      *
****************************************************************
* PROBLEM DESCRIPTION: Circular type dependency of Type and    *
*                      ObjectType classes in BCEL could cause  *
*                      threads to hang.                        *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
Type class had some static members which called ObjectType
class.
But ObjectType class extends the Type class. So there is a
circular dependency which could cause threads to hang.

Problem conclusion

The static members of Type class were moved to another class,
hence the circular dependency was broken.

The fix for this APAR is currently targeted for inclusion in
fix packs 8.0.0.9 and 8.5.5.2.  Please refer to the
Recommended Updates page for delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Temporary fix

Comments

APAR Information

APAR number
PI09680
Reported component name
WEBSPHERE APP S
Reported component ID
5724J0800
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2014-01-15
Closed date
2014-02-07
Last modified date
2014-02-07

APAR is sysrouted FROM one or more of the following:

PI05357
APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name
WEBSPHERE APP S
Fixed component ID
5724J0800

Applicable component levels

R800 PSY
UP
R850 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 April 2022

Tips

PI09680: CIRCULAR TYPE DEPENDENCY IN TYPE/OBJECTTYPE CLASSES IN BCEL COULD CAUSE THREADS TO HANG

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name

Fixed component ID

Applicable component levels

R800 PSY

R850 PSY

Document Information

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