| OWNER
 | VARCHAR2(30)
 | NOT NULL
 | Owner of the materialized view | 
| MVIEW_NAME
 | VARCHAR2(30)
 | NOT NULL
 | Name of the materialized view | 
| MVIEW_TABLE_OWNER
 | VARCHAR2(30)
 | NOT NULL
 | Owner of the container table (see next column) | 
| CONTAINER_NAME
 | VARCHAR2(30)
 |  | Name of the internal container in which the materialized view data is held. Normally this is the same as MVIEW_NAME. For materialized views created in releases before 8.1 (or under pre-8.1 compatibility mode), Oracle attaches the 6-byte prefixSNAP$_. IfMVIEW_NAMEhas more than 19 bytes, Oracle truncates the name to 19 bytes and adds a 4-byte sequence number as a suffix to produce a nonambiguousCONTAINER_NAME. | 
| LAST_REFRESH_SCN
 | NUMBER
 |  | System change number (SCN) of the last refresh operation | 
| LAST_REFRESH_DATE
 | DATE
 |  | SYSDATEof the last refresh
 | 
| REFRESH_METHOD
 | VARCHAR2(8)
 |  | Default refresh method: FORCE,FAST,COMPLETE, orNONE | 
| SUMMARY
 | VARCHAR2(1)
 |  | Whether this materialized view includes a GROUP BYclause or aggregation (Y|N) | 
| FULLREFRESHTIM
 | NUMBER
 |  | Approximate refresh time, in seconds, for full refresh (defined only when SUMMARY = Y) | 
| INCREFRESHTIM
 | NUMBER
 |  | Approximate refresh time, in seconds, for fast refresh (defined only when SUMMARY = Y) | 
| CONTAINS_VIEWS
 | VARCHAR2(1)
 |  | Whether this materialized view contains a view in its definition (Y|N) | 
| UNUSABLE
 | VARCHAR2(1)
 |  | Whether this materialized view is UNUSABLE(inconsistent data) (Y|N). A materialized view can beUNUSABLEif a system failure occurs during a full refresh. | 
| RESTRICTED_SYNTAX
 | VARCHAR2(1)
 |  | Whether this materialized view had a restriction in its defining query that limits the use of query rewrite (Y|N). More complete information is provided by theREWRITE_CAPABILITYcolumn of theALL_,DBA_, andUSER_MVIEWSviews. | 
| INC_REFRESHABLE
 | VARCHAR2(1)
 |  | Whether this materialized view can be fast refreshed (Y|N) | 
| KNOWN_STALE
 | VARCHAR2(1)
 |  | Whether the data contained in the materialized view is known to be inconsistent with the master table data because that has been updated since the last successful refresh (Y|N) | 
| INVALID
 | VARCHAR2(1)
 |  | Whether this materialized view is in an invalid state (inconsistent metadata) (Y|N) | 
| REWRITE_ENABLED
 | VARCHAR2(1)
 |  | Whether this materialized view is currently enabled for query rewrite (Y|N) | 
| QUERY_LEN
 | NUMBER
 | NOT NULL
 | Length (in bytes) of the query field | 
| QUERY
 | LONG
 | NOT NULL
 | SELECTexpression of the materialized view definition
 | 
| REVISION
 | NUMBER
 |  | Reserved for internal use |