DbEnv::txn_checkpoint(u_int32_t kbyte, u_int32_t min, u_int32_t flags) const;
If there has been database environment activity 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.
If kbyte or min is non-zero, the checkpoint is done only
if more than min minutes have passed since the last checkpoint
or if more than kbyte kilobytes of log data have been written
since the last checkpoint.
The flags value must be set to 0 or
the following value:
- Force a checkpoint record, even if there has been no activity since the
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 DbEnv::txn_checkpoint method may fail and throw an exception or return a non-zero error for the following conditions:
- An invalid flag value or parameter was specified.
The DbEnv::txn_checkpoint method may fail and throw an exception or return a non-zero error for errors specified for other Berkeley DB and C library or system methods.
If a catastrophic error has occurred, the DbEnv::txn_checkpoint method may fail and
either return DB_RUNRECOVERY or throw a
in which case all subsequent Berkeley DB calls will fail in the same way.
Transaction Subsystem and Related Methods
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