Chapter 7. The DB

Chapter 7. The DB_LSN Handle
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Chapter 7. The DB_LSN Handle

#include <db.h>

typedef struct __typedef struct __db_lsn DB_LSN; ;

The DB_LSN object is a log sequence number which specifies a unique location in a log file. A DB_LSN consists of two unsigned 32-bit integers -- one specifies the log file number, and the other specifies an offset in the log file.

Logging Subsystem and Related Methods

Logging Subsystem and Related Methods	Description
DB_ENV->log_archive()	List log and database files
DB_ENV->log_file()	Map Log Sequence Numbers to log files
DB_ENV->log_flush()	Flush log records
DB_ENV->log_printf()	Append informational message to the log
DB_ENV->log_put()	Write a log record
DB_ENV->log_stat()	Return log subsystem statistics
DB_ENV->log_stat_print()	Print log subsystem statistics
log_compare	Compare two Log Sequence Numbers
Logging Subsystem Cursors
DB_ENV->log_cursor()	Create a log cursor handle
The DB_LOGC Handle	A log cursor handle
DB_LOGC->close()	Close a log cursor
DB_LOGC->get()	Retrieve a log record
Logging Subsystem Configuration
DB_ENV->log_set_config(), DB_ENV->log_get_config()	Configure the logging subsystem
DB_ENV->set_lg_bsize(), DB_ENV->get_lg_bsize()	Set/get log buffer size
DB_ENV->set_lg_dir(), DB_ENV->get_lg_dir()	Set/get the environment logging directory
DB_ENV->set_lg_filemode(), DB_ENV->get_lg_filemode()	Set/get log file mode
DB_ENV->set_lg_max(), DB_ENV->get_lg_max()	Set/get log file size
DB_ENV->set_lg_regionmax(), DB_ENV->get_lg_regionmax()	Set/get logging region size