Berkeley DB

DB→set_q_extentsize

						#include <db.h>
						int
						DB→set_q_extentsize(DB *db, u_int32_t extentsize);
					

Description

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 an Extent Size.”

The DB→set_q_extentsize interface may only be used to configure Berkeley DB before the DB→open interface is called.

The DB→set_q_extentsize function returns a non-zero error value on failure and 0 on success.

Errors

• EINVAL An invalid flag value or parameter was specified.

  Called after DB→open was called.