"Not enough space" - on DB.open

Question

Hello,
My application is using BDB 3.3.1.
I’m running with the following Parameters:
m_dbEnv.set_cachesize(0, 536870912, 0);
m_dbEnv.set_verbose(Db.DB_VERB_CHKPOINT, true);
m_dbEnv.set_verbose(Db.DB_VERB_RECOVERY, true);
m_dbEnv.set_verbose(Db.DB_VERB_DEADLOCK, true);
m_dbEnv.set_verbose(Db.DB_VERB_WAITSFOR, true);
m_dbEnv.set_lk_detect(Db.DB_LOCK_DEFAULT);
m_dbEnv.set_lk_max_lockers(4096);
m_dbEnv.set_lk_max_locks(1000000);
m_dbEnv.set_lk_max(1000000);
m_dbEnv.set_tx_max(70);
m_dbEnv.set_lg_regionmax(204800);
But despite of the relatively large numbers of lockers and transactions, I’m getting :
com.sleepycat.db.DbException: Not enough space: Not enough space
On: com.sleepycat.db.Db._open(Native Method)
I want to know from lack of what resource the “Not enough space” is thrown?
Is it because of cachesize/ lockers/ locks/ lockObjects or may be something else.
Some statistics: when the error happened the whole BDB size was 5284880 bytes
While I’m running now with 5546186 bytes and no error occur.
Please advice what can be done to find the problem?
If it seems like a memory leak – please advice, on how it can be found.
Thank you in Advance
Shira

Answer 1

Hi,
The "Not enough space" error is corresponding to ENOMEM - 12, that's described here:
http://www.oracle.com/technology/products/berkeley-db/faq/db_faq.html#8
This error indicates that some resource has been exhausted. There are several ways to find out what is causing this error:
1) Configure the Berkeley DB error stream, which can be done like this:
dbenv->set_errfile(dbenv, stderr);
If you don't have a database environment handle, you can call this on the database handle:
db->set_errfile(db, stderr);
With this, you should see a message explaining what resource has been exhausted.
2) Run the db_stat utility:
db_stat -e -h /path/to/databases
Usually you can solve the problem by configuring the lock limits ( http://www.oracle.com/technology/documentation/berkeley-db/db/ref/lock/max.html ) -- they are often what runs out, or the cache size ( http://www.oracle.com/technology/documentation/berkeley-db/db/ref/am_conf/cachesize.html ).
Bogdan Coman