DBA_MVIEW_ANALYSIS describes all materialized views in the database that potentially support query rewrite and that provide additional information for analysis by applications. Its columns are the same as those in "ALL_MVIEW_ANALYSIS".
Note:
This view excludes materialized views that reference remote tables or that include references to non-static values such as
SYSDATE or USER. This view also excludes materialized views that were created as snapshots prior to Oracle8i and that were never altered to enable query rewrite.
·
ALL_MVIEW_ANALYSIS describes the materialized views accessible to the current user. It provides additional information for analysis by applications. Minimal information is displayed for materialized views that do not support query rewrite (such as materialized views with remote master tables or nondeterministic functions).
·
USER_MVIEW_ANALYSIS describes all such materialized views owned by the current user.
Note:
All of the information in these views is also displayed in
ALL_MVIEWS and its related views. Oracle recommends that you refer to ALL_MVIEWS for this information instead of these views.
Column
|
Datatype
|
NULL
|
Description
|
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 prior to Oracle8i, the Oracle Database attaches the 6-byte prefix SNAP$_. If MVIEW_NAME has more than 19 bytes, the Oracle Database truncates the name to 19 bytes and adds a 4-byte sequence number as a suffix to produce a nonambiguous CONTAINER_NAME. | |
LAST_REFRESH_SCN | NUMBER |
System change number (SCN) of the last refresh operation
| |
LAST_REFRESH_DATE | DATE | SYSDATE of the last refresh | |
REFRESH_METHOD | VARCHAR2(8) |
Default refresh method:
FORCE, FAST, COMPLETE, or NONE | |
SUMMARY | VARCHAR2(1) |
Whether this materialized view includes a
GROUP BY clause 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 be UNUSABLE if 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 the REWRITE_CAPABILITY column of the ALL_, DBA_, and USER_MVIEWS views. | |
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 |
Length (in bytes) of the query field
| |
QUERY | LONG | SELECT expression of the materialized view definition | |
REVISION | NUMBER |
Reserved for internal use
|
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