Use of DbEnv::set_isalive and DbEnv::set_thread_id

Question

Hi
BDB version is 4.6.18. The reference documentation says that these function can be set any time during the life of an application. When I set these functions before opening the environment then an exception other than the DbException occurs. But when I set these functions after opening the environment it is working fine. Have a look at the following code
UINT uEnvFlags = DB_USE_ENVIRON |
DB_CREATE |
DB_INIT_LOCK |
DB_INIT_LOG |
DB_INIT_MPOOL |
DB_THREAD |
DB_INIT_TXN ;
try
nRet = Env.set_thread_count( 10 );
nRet = Env.set_thread_id( Thread_Id );
nRet = Env.set_isalive( Is_Alive );
nRet = Env.open( 0, uEnvFlags, 0 );
catch( DbException& e )
catch( ... )
// The control comes here
nRet = Env.open( 0, uEnvFlags, 0 );
Regards
Nisam

Answer 1

Hi Coman
Actually the control never comes to the catch( DbException& e ){} part, instead it comes to the catch( ... ){}. It seems to me that the exception thrown is not a DbException. Please try to execute the scenario at you end.
Regards
Nisam