Releasing a savepoint frees up the version pages that have been used up to that savepoint.
Data is versioned internally at the page level. SAP Sybase IQ maintains a separate copy of only the updated pages; the remaining pages are shared with the previous version.
Releasing savepoints makes better use of your disk space.
RELEASE SAVEPOINT n
All resources after the savepoint are released, and you cannot roll back to any intermediate savepoints.
RELEASE SAVEPOINT does not release locks.