Use the following parameters to control the shared-memory buffer pool.
| Configuration Parameter | Description |
|---|---|
| CLEANERS | Controls the number of threads used to flush pages to disk and return the pages to the shared-memory pool. See Flushing Data to Disk. |
| RA_PAGES and RA_THRESHOLD | Control the number of disk pages that the database server reads ahead during sequential scans. See Configuring the Database Server to Read Ahead. |