Kbase P66771: What is the Checkpoint
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
16/12/2005 |
|
Status: Unverified
GOAL:
What is the Checkpoint
FIX:
A process by which the in-memory and on-disk state of the database are reconciled. As transactions are executed, changes are made to copies of parts of the database that have been brought into volatile memory. The version that is on disk becomes progressively more obsolete. During a checkpoint, all memory-resident database changes are written to stable storage, making the volatile and stabile copies consistent. The Progress database manager initiates a checkpoint each time a before-image cluster is filled