How to avoid sleepycat.je.log.ChecksumException

Hello,
We're building one on-line game application, and are evaluating JE. We want to use JE as a persistent store (very similar to a cache, periodically sync each on-line user's data to a remote JE server via network socket). We're testing with thousands of on-line users, and the data size for each user is about 83 KB.
I ran into one EnvironmentFailureException exception while doing anomaly testing. I used "kill -TERM pid" to kill the JVM process, and encountered the following exception. I had to clean all the JE log files in order to re-start JE. I'm wondering:
1. Is there anything wrong with my approach of anomaly testing? How to avoid the exception if I want to continue my anomaly testing?
2. Once the exception happens, are there any ways of "rescuing" the existing data? Because I had to clean all the JE log files in order to re-start JE.
The error message is as follows:
<daemonthread name="Cleaner-1"></daemonthread> caught exception: com.sleepycat.je.EnvironmentFailureException: (JE 4.1.6)DBServ (1):dbhome com.sleepycat.je.log.ChecksumExcep Read invalid log entry type: 0 LOG_CHECKSUM: Checksum invalid on read, log is likely invalid. Environment is invalid and must be closed. fetchTarget of 0x8a/0x59aaac parent IN=59 IN class=com.sleepycat.je.tree.BIN lastFullVersion=0xa4/0x7d1362 parent.getDirty()=true state=0
com.sleepycat.je.EnvironmentFailureException: (JE 4.1.6)DBServ(1):dbhome leepycat.je.log.ChecksumException: Read invalid log entry type: 0 LOG_CHECKSUM: Checksum invalid on read, log is likely invalid. Environment is invalid and must be closed. fetchTarget of 0x8a/0x59aaac parent IN=59 IN class=com.sleepycat.je.tree.BIN lastFullVersion=0xa4/0x7d1362 parent.getDirty()=true state=0
at com.sleepycat.je.log.LogManager.getLogEntry(LogManager.java:784)
at com.sleepycat.je.log.LogManager.getLogEntryAllowInvisibleAtRecovery(LogManager.java:742)
at com.sleepycat.je.tree.IN.fetchTarget(IN.java:1315)
at com.sleepycat.je.tree.BIN.fetchTarget(BIN.java:1367)
at com.sleepycat.je.tree.Tree.getParentBINForChildLN(Tree.java:1017)
at com.sleepycat.je.cleaner.FileProcessor.processLN(FileProcessor.java:678)
at com.sleepycat.je.cleaner.FileProcessor.processFile(FileProcessor.java:553)
at com.sleepycat.je.cleaner.FileProcessor.doClean(FileProcessor.java:241)
at com.sleepycat.je.cleaner.FileProcessor.onWakeup(FileProcessor.java:143)
at com.sleepycat.je.utilint.DaemonThread.run(DaemonThread.java:162)
at java.lang.Thread.run(Thread.java:619)
Caused by: com.sleepycat.je.log.ChecksumException: Read invalid log entry type: 0
at com.sleepycat.je.log.LogEntryHeader.<init></init>(LogEntryHeader.java:138)
at com.sleepycat.je.log.LogManager.getLogEntryFromLogSource(LogManager.java:861)
at com.sleepycat.je.log.LogManager.getLogEntry(LogManager.java:781)
Thanks,
Leeuan

Do you still have the offending log files? If so, save them away.
With a fresh environment, are you able to reliably reproduce this? i.e. if you kill -9 on a running system, can you reproduce the same problem?
Charles Lamb

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INSERTDATA
33 35 2 123 456 789 543 241 643 243 135 RRRRRR 55
06-SEP-2012 03:50:17
33 35 2 123 456 789 543 241 643 243 135 RRRRRR 55
06-SEP-2012 03:51:19
33 35 2 123 456 789 543 241 643 243 135 RRRRRR 55
06-SEP-2012 03:51:19
R C S TC NA TC2 NA2 TC3 NA3 TC4 NA4 WTHER SNO
INSERTDATA
33 35 2 123 456 789 543 241 643 243 135 RRRRRR 55
06-SEP-2012 03:52:20
33 35 2 123 456 789 543 241 643 243 135 RRRRRR 55
06-SEP-2012 03:52:20
33 35 2 123 456 789 543 241 643 243 135 RRRRRR 55
06-SEP-2012 03:53:22
R C S TC NA TC2 NA2 TC3 NA3 TC4 NA4 WTHER SNO
INSERTDATA
33 35 2 123 456 789 543 241 643 243 135 RRRRRR 55
06-SEP-2012 03:53:22
33 35 2 123 456 789 543 241 643 243 135 RRRRRR 55
06-SEP-2012 03:54:45
33 35 2 123 456 789 543 241 643 243 135 RRRRRR 55
06-SEP-2012 03:54:45
Now I do not want the duplicate values to be updated ...and want them to ignore them.....
please I need a help on this query........How to avoid the duplicate values............

Look at the posts closely:might not be needed if formatted ;)
create or replace procedure splitsms as
begin
insert into scott.smssplit (r,c,s,tc,na,tc2,na2,tc3,na3,tc4,na4,wther,sno)
select substr(rcstcnatcnatcnatcnawther,1,2) r,
         substr(rcstcnatcnatcnatcnawther,3,2) c,
         substr(rcstcnatcnatcnatcnawther,5,1) s,
         substr(rcstcnatcnatcnatcnawther,6,3) tc,
         substr(rcstcnatcnatcnatcnawther,9,3) na,
         substr(rcstcnatcnatcnatcnawther,12,3) tc2,
         substr(rcstcnatcnatcnatcnawther,15,3) na2,
         substr(rcstcnatcnatcnatcnawther,18,3) tc3,
         substr(rcstcnatcnatcnatcnawther,21,3) na3,
         substr(rcstcnatcnatcnatcnawther,24,3) tc4,
         substr(rcstcnatcnatcnatcnawther,27,3) na4,
         substr(rcstcnatcnatcnatcnawther,30,10) wther,
         sno
    from scott.sms1 a
   where sno = (select max(sno)
                  from sms1
                 where sno != a.sno
               ); ---------------> added where clause with table alias.
end;Regards
Etbin

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