Checkpoints

An Oracle checkpoint is an event that posts DMLs from the Redo log files to the tablespace files. Checkpoints always occur after a Redo log file switch and can also be configured to occur at predefined time intervals. For erwin� Data Modeler Workgroup Edition, which generates large transactions, checkpoints should occur only after log switches to minimize I/O.

To ensure a checkpoint only after a log switch, do notset the LOG_CHECKPOINT_INTERVAL and LOG_CHECKPOINT_TIMEOUT parameters in the INIT.ora or INIT<SID>.ora file.