#include <db_cxx.h>

int
DbEnv::txn_checkpoint(u_int32_t kbyte, u_int32_t min, u_int32_t flags) const;

If there has been any logging activity in the database environment since the last checkpoint, the DbEnv::txn_checkpoint method flushes the underlying memory pool, writes a checkpoint record to the log, and then flushes the log.

The DbEnv::txn_checkpoint 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 flags parameter must be set to 0 or the following value:
  DB_FORCE
  • Force a checkpoint record, even if there has been no activity since the last checkpoint.
  
  

• If the kbyte parameter is non-zero, a checkpoint will be done if more than kbyte kilobytes of log data have been written since the last checkpoint.

• If the min parameter is non-zero, a checkpoint will be done if more than min minutes have passed since the last checkpoint.

The DbEnv::txn_checkpoint method may fail and throw DbException, encapsulating one of the following non-zero errors, or return one of the following non-zero errors:

• An invalid flag value or parameter was specified.