Core files including hs_err*pid files are available via NFS here:

/net/irperf.ireland/export/work/core_images/Fri.Oct.30.2009.oaf266.jbb05.osol_1002-125

                      OpenSolaris Development snv_125 SPARC
           Copyright 2009 Sun Microsystems, Inc. All Rights Reserved.
                        Use is subject to license terms.
                            Assembled 12 October 2009

SunOS oaf266 5.11 snv_125 sun4u sparc SUNW,Sun-Blade-1500

irperf# cat cored_pstack.core.java.910.1256866461
ffffffff7dbfe381 libc.so.1`_lwp_kill+8(6, ffffffffffffffef, ffffffffffffffec, 0
, ffffffff7f14f6b0, 5)
ffffffff7dbfe431 libc.so.1`abort+0x10c(1, d60, 6, 0, 1f6e28, c00)
ffffffff7dbfe511 libjvm.so`__1cCosFabort6Fb_v_+0x58(1, 1, 2dbc8,
ffffffff7989e000, 3abb4c, 2d800)
ffffffff7dbfe5c1 libjvm.so`__1cHVMErrorOreport_and_die6M_v_+0xcb4(
ffffffff79900480, 0, 1, ffffffff7990ace0, ffffffff798cbb80, ffffffff7975c853)
ffffffff7dbfe6f1 libjvm.so`__1cXreport_vm_out_of_memory6FpkciL1_v_+0x5c(
ffffffff79663924, 49, 202000, ffffffff79663969, 46c00, 69f914)
ffffffff7dbfe801 libjvm.so`__1cWBlockOffsetSharedArrayGresize6ML_v_+0x84(
100118490, 8000000, 40000000, ffffffff2f800000, 74d8ec, 200000)
ffffffff7dbfe8b1
libjvm.so`__1cWBlockOffsetSharedArray2t5B6MnJMemRegion_L_v_+0xcc(100118490,
ffffffff7dbff2c8, 8000000, ffffffff2f800000, 1001184a8, ffffffff7c200000)
ffffffff7dbfe9b1
libjvm.so`__1cOCardGeneration2t5B6MnNReservedSpace_LipnJGenRemSet__v_+0x134(
100118340, ffffffff7dbff3c0, 8000000, 1, 10010c730, 100118490)
ffffffff7dbfeb01
libjvm.so`__1cRTenuredGeneration2t5B6MnNReservedSpace_LipnJGenRemSet__v_+0x70(
100118340, ffffffff7dbff590, 40000000, 1, ffffffff798e9bc0, 10000)
ffffffff7dbfec11
libjvm.so`__1cOGenerationSpecEinit6MnNReservedSpace_ipnJGenRemSet__pnKGeneration
__+0xf0(100113410, ffffffff7dbff7d8, 1, 10010c730, 100118340, 40000000)
ffffffff7dbfede1 libjvm.so`__1cQGenCollectedHeapKinitialize6M_i_+0x754(100118e60
, 100110ac0, 10000, 10000, ffffffff7989e000, ffffffff7dbff848)
ffffffff7dbff071 libjvm.so`__1cNuniverse_init6F_i_+0x330(4c30d, ffffffff798e8f88
, 4c000, 0, 100118dd0, 1001195d0)
ffffffff7dbff151 libjvm.so`__1cMinit_globals6F_i_+0xac(609f0, ffffffff7cb,
7fffffffbe5801, ffffffff7dbffa00, ffffffff7989e000, 60800)
ffffffff7dbff231 libjvm.so`__1cHThreadsJcreate_vm6FpnOJavaVMInitArgs_pb_i_+0x230
(2dba8, ffffffff7dbffe5b, 100116800, 4cc24, ffffffff798eac24, ffffffff7989e000)
ffffffff7dbff5a1 libjvm.so`JNI_CreateJavaVM+0xac(ffffffff7dbfff38,
ffffffff7dbfff30, ffffffff7dbfff18, ffffffff790a1458, 7fcba4, 10000)
ffffffff7dbff661 JavaMain+0x1c0(a2a, 10010be38, 0, 10010bd70, 0, 0)
ffffffff7dbff751 libc.so.1`_lwp_start(0, 0, 0, 0, 0, 0)