#include <db_cxx.h> DB_ENV->get_backup_config(db_backup_config_t option, u_int32_t *valuep);
The DbEnv::get_backup_config() method
retrieves the value set for hot backup tuning parameters. See the
DbEnv::backup()
and
DbEnv::dbbackup()
methods for a description of the hot backup APIs. These tuning
parameters can be set using the
DbEnv::set_backup_config()
method.
The DbEnv::get_backup_config() method may
be called at any time during the life of the application.
The DbEnv::get_backup_config()
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 option parameter identifies the backup parameter to be retrieved. It must be one of the following:
DB_BACKUP_WRITE_DIRECT
Turning this on causes direct I/O to be used when writing pages to the disk.
DB_BACKUP_READ_COUNT
Configures the number of pages to read before pausing.
DB_BACKUP_READ_SLEEP
Configures the number of microseconds to sleep between batches of reads.
DB_BACKUP_SIZE
Configures the size of the buffer, in megabytes, to read from the database.