#include <db_cxx.h> int DbEnv::get_lg_bsize(u_int32_t *lg_bsizep);
         The DbEnv::get_lg_bsize() method returns the size of the log buffer,
         in bytes. You can manage this value using the 
         DbEnv::set_lg_bsize()
         method.
    
         The DbEnv::get_lg_bsize() method may be called at any time during
         the life of the application.
    
         The DbEnv::get_lg_bsize() 
            
            
                method either returns a non-zero error value or throws an
                exception that encapsulates a non-zero error value on
                failure, and returns 0 on success.