This problem is present in both 1.3.0_02 1.3.0_03 and 1.3.1

Changing the time-stamp of a servlet deployed in WebLogic 6's
public_html/WEB-INF/classes/ directory triggers the OutOfMemory errors and
the eventual HotSpot crash.

When a servlet is changed, WebLogic 6's code destroys its current class
loader object and instantiates a new one. This requires any session objects
in memory to be serialized before the class loader is destroyed, then
deserialized and reinstantiated for the new class loader. (This is
documented at
http://e-docs.bea.com/wls/docs60////servlet/progtasks.html#143031 under the
"ClassCastException and HTTP Sessions" header).

There is a lot of serialization/deserialization happening all at once, which
is what we suspect is causing the problem.

This problem happens with any of the flags -client, -server or -hotspot

java.lang.OutOfMemoryError
<<no stack trace available>>
<Jul 9, 2001 9:51:02 AM EDT> <Error> <HTTP> <[WebAppServletContext(2378821,public_html)] Servlet failed with Exception
java.lang.OutOfMemoryError
<<no stack trace available>>
>
java.lang.OutOfMemoryError
<<no stack trace available>>
<Jul 9, 2001 9:51:02 AM EDT> <Error> <HTTP> <[WebAppServletContext(2378821,public_html)] Servlet failed with Exception
java.lang.OutOfMemoryError
<<no stack trace available>>
>
#
# HotSpot Virtual Machine Error, Internal Error
# Please report this error at
# http://java.sun.com/cgi-bin/bugreport.cgi
#
# Error ID: 4349254E560E43505000F4 01
#
# Problematic Thread: prio=5 tid=0x100ae0 nid=0xb runnable
#

========
dbx output of thread
current thread: t@11
=>[1] __sigprocmask(0x0, 0xfea01f38, 0x0, 0xffffffff, 0xffffffff, 0x0), at 0xff379cf0
  [2] _resetsig(0xff38c984, 0x0, 0xfea03dc0, 0x0, 0x0, 0xfea03e40), at 0xff36f31c
  [3] _sigon(0xff3943d8, 0xff394278, 0xfea03e38, 0xfea0200c, 0x6, 0xff2cd0ac), at 0xff36ea40
  [4] _thrp_kill(0x0, 0xb, 0x6, 0xff38c984, 0xfea03dc0, 0xff393bf4), at 0xff371944
  [5] abort(0xff333bb0, 0xfea02100, 0x0, 0xfffffff8, 0x0, 0xfea02121), at 0xff2b9468
  [6] os::abort(0x1, 0xfe78c000, 0x1, 0xfea02, 0xfe78c000, 0xfea0211c), at 0xfe6e28ac
  [7] report_error(0xee, 0xfea02992, 0xf4, 0xfe73eca4, 0xfe7c6df8, 0xfe78c000), at 0xfe650ae0
  [8] report_fatal(0xf4, 0xfe78c000, 0xfe762218, 0xfea03344, 0x100ae0, 0x2), at 0xfe6503b0
  [9] ciEnv::get_constant_by_index_impl(0x0, 0x100ae0, 0xfea03b78, 0x2, 0xfe78c000, 0xfea033b0), at 0xfe5d7880
  [10] ciEnv::get_constant_by_index(0xfe79f8ec, 0x100ae0, 0xfea03438, 0x2, 0xfe78c000, 0x1f5f08), at 0xfe5d75ec
  [11] ciBytecodeStream::get_constant(0x1f5f08, 0xfea03b78, 0xfe78c000, 0xfea034b0, 0xfea03550, 0x2), at 0xfe5d74d
4
  [12] GraphBuilder::load_constant(0xfe78c000, 0x100fa0, 0xfea035d4, 0x100f98, 0x100f94, 0x100f90), at 0xfe5d6f84
  [13] GraphBuilder::connect_to_end(0xfe7b8fac, 0xfe7b8fb0, 0xfe7b8fb4, 0xfe7b8fb8, 0xfe7b8fbc, 0xfe78c000), at 0x
fe5acf54
  [14] GraphBuilder::handle_exception(0xda9d78, 0xdaa8b0, 0xdaa99c, 0xfe78c000, 0xffffffff, 0xfe7b0c3c), at 0xfe5d
477c
  [15] GraphBuilder::connect_to_end(0xfe7b8fac, 0xfe7b8fb0, 0xfe7b8fb4, 0xfe7b8fb8, 0xfe7b8fbc, 0xfe78c000), at 0x
fe5ac300
  [16] GraphBuilder::GraphBuilder(0xda9ea0, 0xfea03a98, 0x100fd0, 0xda9cd4, 0xda9de4, 0xfea03770), at 0xfe5abbc0
  [17] IRScope::build_graph(0xda9e50, 0xfea03a98, 0xffffffff, 0x1f4f60, 0xfe78c000, 0xfe78c000), at 0xfe5aa970
  [18] IR::IR(0xda9ccc, 0xfea03a98, 0x1f5ec0, 0xda9cb8, 0x100fd0, 0x100dd0), at 0xfe5a9ba4
  [19] Compilation::build_hir(0x100f7c, 0xfe78c000, 0xfea03a98, 0xfea03ba4, 0x400, 0xfffffffc), at 0xfe5a9984
  [20] Compilation::compile_java_method(0xfea03a98, 0xfea03a1c, 0xfea03a98, 0x100ae0, 0xfea03ba4, 0xfea039cc), at
0xfe5a8a18
  [21] Compilation::Compilation(0x100ca0, 0xfea03b78, 0x1f5ec0, 0xffffffff, 0x100c84, 0xfe78c000), at 0xfe5a8440
  [22] Compiler::compile_method(0x100c84, 0x100c18, 0xfe78c000, 0x1f5ec0, 0xffffffff, 0x1f5ec0), at 0xfe5a81a0
  [23] CompileBroker::invoke_compiler_on_method(0x1f5ec0, 0x0, 0xfe7ab604, 0x0, 0x0, 0xa48), at 0xfe5a3a98
  [24] CompileBroker::compiler_thread_loop(0x29128, 0x100ae0, 0xfe78c000, 0xfea03d60, 0xfe78c000, 0xf9cf5130), at
0xfe59df70
  [25] JavaThread::run(0xfe904000, 0xfe795d3c, 0xfe78c000, 0x100000, 0x100ae0, 0x100000), at 0xfe58e040
  [26] _start(0xfe78c000, 0xff255d60, 0x0, 0xb8681e50, 0x1, 0xfe401000), at 0xfe57dea4



All info (java_g core file and dbx output(newdbxout) and error logs) are contained in
/net/cores.east/cores/62553685