materialized view refresh error log
The frequency of this refresh can be configured to run on-demand or at regular time intervals. The view is refreshed in a scheduled task via dbms_refresh.refresh right before the procedure that reads it is kicked off. My question is regarding the refresh of MVs. ORA-12034 means that your last refresh older than the materialized view log and no way to sync back to the master table due to some reasons. You may had to add WITH SEQUENCE to your log creation to cope with certain use as stated in Oracle documentation : Specify SEQUENCE to indicate that a sequence value providing additional ordering information should be recorded in the materialized view log. It was a pleasure to finally meet you. A materialized view log (snapshot log) is a schema object that records changes to a master table's data so that a materialized view defined on that master table can be refreshed incrementally. DB version is 10.2.0.2.0. Sequence numbers are necessary to support fast refresh after some update scenarios. The problem is when we need to refresh our Materialized Views, a lot of redo logs are gen Materialized View Logs. In the example below note how the log table is empty after the refresh. Materialized view log is a table associated with the master table of a materialized view. To stop recording any of this information, you must first drop the materialized view log and then re-create it. When changes are made to master table data, Oracle Database stores those changes description in the materialized view log and then uses the materialized view log to refresh materialized views based on the master table. mv_log_augmentation. A complete refresh is required before the next fast refresh. A materialized view in Oracle is a database object that contains the results of a query. CONNECT scott/tiger@db1 CREATE MATERIALIZED VIEW LOG ON scott.emp TABLESPACE users WITH PRIMARY KEY INCLUDING NEW VALUES; Refresh Materialized Views. It loads the contents of a materialized view from scratch. NOTE:365157.1 - Complete Refresh of Single Materialized View Is Doing Delete Instead of Truncate BUG:4217420 - REFRESH COMPLETE GENERATING A LOT OF ARCHIVED LOGS FOR A NOLOGGING MVIEW NOTE:334878.1 - Can Redo Generation Be Disabled During Materialized View Refresh Materialized View Refresh Hi Tom,I was at your conference in MTL in february. Oracle automatically purges rows in the materialized view log when they are no longer needed. ORA-12034 The materialized view log was younger than the last refresh. Use the ADD clause to augment the materialized view log so that it records the primary key values, rowid values, object ID values, or a sequence when rows in the materialized view master table are changed. set NO FORCE LOGGING in the database; altered the materialized view and base table to NOLOGGING; altered the indexes on the view to NOLOGGING; Nothing seems to reduce the log generation rate. Contents. This means, if the SQL query of the materialized view has an execution time of two hours, the Complete Refresh … We are using Discoverer with a 9i Database in Archivelog mode. This clause can also be used to record additional columns. The simplest form to refresh a materialized view is a Complete Refresh. What is materialized view. 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