#include <db_cxx.h>

DbEnv::set_lk_conflicts(u_int8_t *conflicts, int nmodes); 

Set the locking conflicts matrix.

If DbEnv::set_lk_conflicts() is never called, a standard conflicts array is used; see Standard Lock Modes for more information.

The DbEnv::set_lk_conflicts() method configures a database environment, not only operations performed using the specified DbEnv handle.

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

The DbEnv::set_lk_conflicts() 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 conflicts parameter is the new locking conflicts matrix. The conflicts parameter is an nmodes by nmodes array. A non-0 value for the array element indicates that requested_mode and held_mode conflict:


The not-granted mode must be represented by 0.


The nmodes parameter is the size of the lock conflicts matrix.


The DbEnv::set_lk_conflicts() 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 DbEnv::open() was called; or if an invalid flag value or parameter was specified.


The conflicts array could not be copied.


DbEnv, DbLock

See Also

Locking Subsystem and Related Methods