*KB #* 327
*Affects Versions:*
*Fixed in Version:*
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*JLT #*
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The following matrix provides information about problems with special JVM versions and options on different OS.
{note}Please keep in mind that this matrix only provides information about tested OS, JVM version and JVM options. There might be further issues with JVMs and JVM options on other OS. Additionally special combination of JVM options might also harm the SUD.
{note}

{waning}All the options/OS/JVM combinations will be verified with 3.0.2 before releasing this article.{warning}

h2. Sun JVM

|| VM Vendor || VM Version || VM option || OS || Memory Dump || Thread Dump || Class Unloading || Sud StartUp || HotSensor Placement ||
| Sun | 1.4.2_\* | \-XX:+CMSClassUnloadingEnabled | Solaris only | | | | crashes VM on class unloading | |
| Sun | 1.4.2_08 | \-XX:+UseParallelGC | Windows XP SP2 | crashes dump | | | | |
| Sun | 1.4.2_08 | \-XX:+AggressiveHeap | Windows XP SP2 | OOM error | | | | |
| Sun | 1.4.2_08 | \-XX:+UseTLAB | Windows XP SP2 | | | | crashes SUD | |
| Sun | 1.4.2_08 | \-Xincgc | Windows XP SP2 | | | | | |
| Sun | 1.5.0_00/01/02 32-bit and 64-bit | \\ | Linux | | | | | HSP fails with illegal constant pool index \\ |
| Sun | 1.5.0_10 | \-Xincgc | Windows XP SP2 | crashes dump | | | | |
| Sun | 1.5.0_10 | \-XX:+UseConcMarkSweepGC (-Xconcgc) *or* \\
\-XX:+AggressiveHeap *or* \\
\-Xincgc *or* \\
\-XX:+RequireSharedSpaces | Windows XP SP2 | crashes dump | | | | |
| Sun | 1.5.0_10 | \-XX:+TraceClassLoading | Windows XP SP2 | crashes JVM and wants to send a bug report to M$ | | | | |
| Sun | 1.5.0_10 | \-XX:+UseTLAB | Windows XP SP2 | Requested array size exceeds VM limit | | | | |
| Sun | 1.5.x | \-XX:+TraceClassUnloading *or* \\
\-XX:+PrintGCDetails | unknown | | | | crashes SUD | |
| Sun | 1.5.0_13 | \-XX:+UseConcMarkSweepGC | Linux x64 \\ | | crashes SUD \\ | | | |
| Sun | 1.6.x | \-XX:+TraceClassLoading | Suse 9.x | | | | crashes SUD \\ | \\ |

h2. Bea/Oracle JRockit JVM

|| VM Vendor || VM Version || VM option || OS || Memory Dump || Thread Dump || Class Unloading || Sud StartUp || HotSensor Placement ||
| Bea | 1.4.2_08 (R24.5) | \\ | all | incomplete | | | | |
| Bea | 1.5.0_04-b05 (R26.0)/1.5.0_06-b05 (R26.4) | \\ | Linux/Windows \\ | freeze VM \\ | | | | |
| Bea | 1.5.0_08 (R27.1) | \\ | all | extended: lasts very long \\
simple: freeze on startup (JLT-5513) | | | | |
| Bea | 1.5.0_10, 1.6.0 (32 + 64-bit) (R27.2) | \\ | all | simple and extended crash (GC after untagging) after 2nd dump \\ | freeze on startup | | | warning in client but no problems with JVM 6 \\ |
| Bea | 1.5.0_11, 1.6.0_01 (32 + 64-bit) (R27.3) | \\ | all | simple and extended crash (GC after untagging) after 2nd dump \\ | freeze on startup (could not reproduce with JVM 6) \\ | | | warning in client but no problems with JVM 6 |
| Bea | 1.6.0_01 (32 + 64-bit) (R27.3.1) | \\ | all | simple and extended crash (GC after untagging) after 2nd dump \\ | \\ | | | warning in client but no problems \\ |
| Bea | 1.6.0_02 (R27.4) | \\ | all | \\ | \\ | | | warning in client but no problems \\ |
| Bea | 1.6.0_03 (R27.5) | \\ | all | \\ | \\ | | | warning in client but no problems \\ |
| Bea | 1.5.0_10 (R27.2) | \-Xgcprio:pausetime *or* \\
\-Xgc:gencon | Windows XP SP2 \\ | core dump \\ | | | | |
| Bea | 1.5.0_10 (R27.2) | \-Xgc:singlecon | Windows XP SP2 \\ | | | | | |

h3. IBM JVM

|| VM Vendor || VM Version || VM option || OS || Memory Dump || Thread Dump || Class Unloading || Sud StartUp || HotSensor Placement ||
| IBM | 1.4.2 SR1                                        \\ | \-Xdisableexplicitgc | Windows | Could not get extended Heap Dump begin pointer is NULL | | | | |
| IBM | 1.4.2 SR1 | \-Xnocompactexplicitgc *or* \\
\-Xgcthreads5 | Windows | Sometimes core dumps, sometimes not | | | | |
| IBM | 1.4.2 SR7\+ | \\ | all | | crashes | | | |
| IBM \\ | 1.4.2 SR7\+ 64 bit \\ | \\ | all \\ | | | crashes \\ | | |
| IBM | 1.5.0 SR5\+ / 1.6.0 GA\+ | \\ | all | | | | | |
| IBM | below 1.5.0 SR7 / 1.6.0 SR1 | \\ | all | | | | | VM crashes on hot sensor placement |
| IBM | all 1.5 \\ | \\ | all | dump incomplete \\ | | | | |
| IBM \\ | 1.5.0 | \\ | all | dump incomplete & \\
tag is NULL while untaging \\ | | | | |
| IBM \\ | 1.4.2 x64 SR < 11 \\ | \\ | linux \\ | dump will be aborted | | | | |

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