#include <db_cxx.h>

Db::set_q_extentsize(u_int32_t extentsize); 

Set the size of the extents used to hold pages in a Queue database, specified as a number of pages. Each extent is created as a separate physical file. If no extent size is set, the default behavior is to create only a single underlying database file.

For information on tuning the extent size, see Selecting a extent size.

The Db::set_q_extentsize() method configures a database, not only operations performed using the specified Db handle.

The Db::set_q_extentsize() method may not be called after the Db::open() method is called. If the database already exists when Db::open() is called, the information specified to Db::set_q_extentsize() will be ignored.

The Db::set_q_extentsize() 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 extentsize parameter is the number of pages in a Queue database extent.


The Db::set_q_extentsize() 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:


If the method was called after Db::open() was called; or if an invalid flag value or parameter was specified.



See Also

Database and Related Methods