#include <db_cxx.h> int Db::set_partition_dirs(const char **dirs);
Specify which directories will contain the database extents. If the number of directories is less than the number of partitions, the directories will be used in a round robin fashion.
             The Db::set_partition_dirs() method
             may not be called after the 
             Db::open()  method is called.
    
         The Db::set_partition_dirs()
         
            
            
                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.
            
        
    
The dirs points to an array of directories that will be used to create or locate the database extent files specified to the Db::open() method. The directories must be included in the environment list specified by DbEnv::add_data_dir().
            The Db::set_partition_dirs()
            
            
            
                method may fail and throw a DbException 
                exception, encapsulating one of the following non-zero errors, or return one
                of the following non-zero errors: