| Type: | integer |
| Default: | 1048576 |
| Min: | 64 |
| Max: | 2147483647 |
| Context: | postmaster |
| Restart: | true |
| Since: | 17 |
Specifies the maximum amount of allocated pages for sql-notify / sql-listen queue. The default value is 1048576. For 8 KB pages it allows to consume up to 8 GB of disk space.