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DB2 - Problem description

Problem IC98066 Status: Closed

Crash in db2top collector mode when compressing the snapshot data

product:
DB2 FOR LUW / DB2FORLUW / 970 - DB2
Problem description:
db2top running in collector mode ( e.g. db2top -d <dbname> -C 
... ) may trap when compressing the snapshot stream, with 
following stacktrace: 
 
</Siginfo_t> 
Signal #11 (SIGSEGV): si_addr is 0x00002B3E4999F000, si_code is 
0x00000001 (SEGV_MAPERR:Address not mapped to object.) 
</SignalDetails> 
..... 
<POFDisassembly> 
 rle_output + 0x0020    (db2top) 
 
        0x000000000042413E : 408832B801000000 
</POFDisassembly> 
<StackTrace> 
-----FUNC-ADDR---- ------FUNCTION + OFFSET------ 
0x00002B3E42FB5E2F ossDumpStackTraceEx + 0x01ef 
                (/home/db2inst1/sqllib/lib64/libdb2osse.so.1) 
0x00002B3E42FB0BEE _ZN11OSSTrapFile6dumpExEmiP7siginfoPvm + 
0x00cc 
                (/home/db2inst1/sqllib/lib64/libdb2osse.so.1) 
0x00002B3E41EA6B0F sqlo_trce + 0x03fb 
                (/home/db2inst1/sqllib/lib64/libdb2.so.1) 
0x000000000044FAA0 _Z17pdToolTrapHandleriP7siginfoPv + 0x00e8 
                (db2top) 
0x00000030CF430280 address: 0x00000030CF430280 ; dladdress: 
0x00000030CF400000 ; offset in lib: 0x0000000000030280 ; 
                (/lib64/libc.so.6) 
0x000000000042413E rle_output + 0x0020 
                (db2top) 
0x00000000004240C6 do_compress + 0x006a 
                (db2top) 
0x0000000000457A19 write_snapshotstream + 0x0035 
                (db2top) 
0x000000000045730F write_stream + 0x01d9 
                (db2top) 
0x0000000000428D54 _GetSnapshot + 0x050a 
                (db2top) 
0x0000000000428799 _run_snapshot + 0x04e1 
                (db2top) 
0x0000000000456F7A save_background_stream + 0x02e6 
                (db2top) 
0x00000000004434BD main + 0x00d9 
                (db2top) 
0x00000030CF41D974 __libc_start_main + 0x00f4 
                (/lib64/libc.so.6) 
0x0000000000418899 __gxx_personality_v0 + 0x0229 
                (db2top) 
</StackTrace>
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* ALL                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 Version 9.7 and Fix Pack 10                   * 
****************************************************************
Local Fix:
Solution
Problem was first fixed in DB2 Version 9.7 and Fix Pack 10
Workaround
not known / see Local fix
BUG-Tracking
forerunner  : APAR is sysrouted TO one or more of the following: IC99804 IC99807 
follow-up : 
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
03.12.2013
10.11.2014
10.11.2014
Problem solved at the following versions (IBM BugInfos)
9.7.
Problem solved according to the fixlist(s) of the following version(s)
9.7.0.10 FixList
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