| SESSION_ID | NUMBER | A unique numeric identifier for the session. | 
| AGGREGATE_CACHE_HITS | NUMBER | The number of times a dimension member is found in the aggregate cache (a hit). The number of hits for run-time aggregation can be increased by fetching data across the dense dimension | 
| AGGREGATE_CACHE_MISSES | NUMBER | The number of times a dimension member is not found in the aggregate cache and must be read from disk (a miss). | 
| SESSION_CACHE_HITS | NUMBER | The number of times the data is found in the session cache (a hit). | 
| SESSION_CACHE_MISSES | NUMBER | The number of times the data is not found in the session cache (a miss). | 
| POOL_HITS | NUMBER | The number of times the data is found in a page in the OLAP page pool (a hit). | 
| POOL_MISSES | NUMBER | The number of times the data is not found in the OLAP page pool (a miss). | 
| POOL_NEW_PAGES | NUMBER | The number of newly created pages in the OLAP page pool that have not yet been written to the workspace LOB. | 
| POOL_RECLAIMED_PAGES | NUMBER | The number of previously unused pages that have been recycled with new data. | 
| CACHE_WRITES | NUMBER | The number of times the data from the OLAP page pool has been written to the database cache. | 
| POOL_SIZE | NUMBER | The number of kilobytes in the OLAP page pool. | 
| CURR_DML_COMMAND | VARCHAR2(64) | The command currently being executed. | 
| PREV_DML_COMMAND | VARCHAR2(64) | The command most recently completed. | 
| AGGR_FUNC_LOGICAL_NA | NUMBER | The number of times the aggregation engine returns a logical NA because the AGGINDEX option is on and the composite tuple does not exist. | 
| AGGR_FUNC_PRECOMPUTE | NUMBER | The number of times the aggregation engine finds a value in a position that it was called to calculate. | 
| AGGR_FUNC_CALCS | NUMBER | The number of times the aggregation engine calculates a parent value based on the values of its children. |