Why environment created failed ?

Question

I work bdb at vxworks V5.5.1. I use bdb of V4.75 about C.
I create env by the following flag:
     open_flag = DB_CREATE | DB_RECOVER | DB_INIT_LOCK
     | DB_INIT_LOG | DB_INIT_TXN | DB_INIT_MPOOL | DB_THREAD;
     But result is failed, error code = 0xc80003.
     So I delete DB_RECOVER from open_flag. The result is OK.
     Env was created ok! So I don't know what happened.
     I trace the source code. I find if I "#undef HAVE_REPLICATION"
     in db_config.h. Then all seems to be ok. But When I reboot os,
     error just said: "/flash/soe/log.0000000017: log file unreadable"
     But I do set:
     p_env->log_set_config(p_env, DB_LOG_AUTO_REMOVE, 1);
     Before I reboot os, I find log file is just "log.0000000015" and
     "log.0000000016" left. So "log.0000000017" has not created, why error
     just said "log.0000000017 unreadable"???
     I don't know what wrong?     Can anyone give some advice?
     Thanks

Answer 1

Thanks Debsubhra Roy:
1. you mention: "You may have some privilege issues on the system with the OS you are using."
Can you explain some more detail? I work at vxworks 5.5.1 and file system is yaffs.
2. I'm not using replication or in-memory log. But I create environment by flags:
DB_USE_ENVIRON | DB_RECOVER | DB_CREATE | DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_TXN | DB_INIT_MPOOL | DB_THREAD | DB_PRIVATE;
Oh, yes, I set "#undef HAVE_REPLICATION" in "db_config.h". I compile all source, but it seems no pass, just saied "__log_rep_split function no found". So I find in "log_get.c" about 1326 line before __log_rep_split, I delete "#ifdef HAVE_REPLICATION", then compile ok. Maybe some wrong.
Is there any wrong about the flags? By the way, I work at multithread not multiprocess.
In "db_config.h", I #undef HAVE_FTRUNCATE 1, I'm not using posix ftruncate.
3. If I delete the code, the result is when a log switch happened, will there be some wrong happen?
4. Sorry for my incaution. I test once again, not environment created failed, just db created failed on the environment. Just the following:
ret = db_create(&p_db, p_env, 0);
the ret is not zero, is just "DB_RUNRECOVERY: Fatal error, run database recovery". All information is the following:
*/flash/soe/work/log.0000000002: log file unreadable: errno = 0xc80003*
PANIC: errno = 0xc80003
PANIC: fatal region error detected; run recovery
PANIC: fatal region error detected; run recovery
I know errno = 0xc80003 is FILE NOT FOUND in yaffs system.
So question should be why db created failed ? Sorry.
5. I find some simular questions about bdb on vxworks via google.
Re: Berkeley DB High Availability  Work Error (VxWorks)
Re: BDB vxworks 6.6 kernel port error
All wrongs happened just at os reboot. I don't know whether vxworks has something
against bdb. I approciate your help.
Edited by: being on 2009-3-6 下午7:28
Edited by: being on 2009-3-6 下午7:50
Edited by: being on 2009-3-6 下午10:19
Edited by: being on 2009-3-6 下午11:21