Appendix C. Probes 249Field ValueCritical Maximum Redo Buffer AllocationRetry RateWarning Maximum Redo Buffer AllocationRetry RateTable C-59. Oracle::Redo Log settingsC.9.13. Oracle::Table ExtentsThe Oracle::Table Extents probe monitors an Oracle database instance and collects thefollowing metrics:• Allocated Extents-Any Table — The total number of extents for any table.• Available Extents-Any Table — The percentage of available extents for any table.In Oracle, table extents allow a table to grow. When a table is full, it is extended by anamount of space configured when the table is created. Extents are configured on a per-table basis, with an extent size and a maximum number of extents.For example, a table that starts with 10 MB of space and that is configured with an extentsize of 1 MB and max extents of 10 can grow to a maximum of 20 MB (by being extendedby 1 MB ten times). This probe can be configured to alert by (1) the number of allocatedextents (e.g. "go critical when the table has been extended 5 or more times"), or (2) thetable is extended past a certain percentage of its max extents (e.g. "go critical when thetable has exhausted 80% or more of its max extents").The required Table Owner and Table Name fields contain a default value of % thatmatches any table owner or name.Field ValueOracle SID*Oracle Username*Oracle Password*Oracle Port* 1521Table Owner* %Table Name* %Timeout* 30
