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RE: DB_CONFIG causes bdb_db_init FATAL or PANIC error, renaming it helps

Why don't the error msg says: "ERROR: Please reduce the cachesize in
DB_CONFIG"?

Gary

-----Original Message-----
From: Howard Chu [mailto:hyc@symas.com] 
Sent: Friday, September 03, 2004 5:10 PM
To: Tay, Gary
Cc: openldap-software@OpenLDAP.org
Subject: Re: DB_CONFIG causes bdb_db_init FATAL or PANIC error, renaming
it helps


Tay, Gary wrote:

> I'm using OpenLDAP 2.2.13 with BDB 4.2.52, and I notice that this 
> "Bug"?
>
> On a testing server, whenever I stop the LDAP server, clean up *.bdb,
> __db.* and log.*, and try to rebuild the LDAP server, I am always 
> frightened by FATAL or PANIC errors, something like:
>
> bash-2.05# /usr/local/libexec/slapd -d 10 -u ldap -h "ldap:/// 
> ldaps:///" ...
> bdb_initialize: Sleepycat Software: Berkeley DB 4.2.52: (December  3,
> 2003)
> bdb_db_init: Initializing BDB database
> bdb(dc=example,dc=com): PANIC: fatal region error detected; run
recovery
> bdb_db_open: dbenv_open failed: DB_RUNRECOVERY: Fatal error, run 
> database recovery (-30978)
> backend_startup: bi_db_open(0) failed! (-30978)
> bdb(dc=example,dc=com): txn_checkpoint interface requires an 
> environment configured for the transaction subsystem
> bdb_db_destroy: txn_checkpoint failed: Invalid argument (22)
> slapd stopped.
> connections_destroy: nothing to destroy.
> ...
>
> I have to temporarily renamed DB_CONFIG before the rebuild and rename
> it back after the rebuild, just to get around it.
>
> Anyone experienced this and reported this as a bug? Or know why went
> wrong?
>
> Content of DB_CONFIG:
> set_cachesize 0 209715200 0
> set_lg_regionmax        131072
> set_lg_bsize            2097152
>
> RAM of LDAP Server: 640MB
>
> Gary
>
Most likely you don't have enough free memory to accomodate the cache 
size you've chosen. By renaming the file and starting up, the BDB 
library creates an environment of its default size. Renaming back to 
DB_CONFIG after the environment has been created will have no effect on 
the cache or log settings. Use a smaller cache, get some more RAM, or 
kill whatever other programs are running that are using up the rest of 
your memory.

-- 
  -- Howard Chu
  Chief Architect, Symas Corp.       Director, Highland Sun
  http://www.symas.com               http://highlandsun.com/hyc
  Symas: Premier OpenSource Development and Support