CREATE MATERIALIZED VIEW mv_comp_tab2 refresh fast on demand with rowid … . Complete Refresh - A complete refresh will cause the entire Materialized View to be truncated … A materialized view created with the automatic refresh can not be alter to stop refreshing. The view which we use to make a replica of a target master from a single point in a time is known materialized view. And dropping them was taking a long time, as it tries to drop the data in both source and destination DB. Applies to: Oracle Database - Enterprise Edition - Version 11.2.0.3 and later Information in this document applies to any platform. I'm trying to do an Oracle Data Pump Export (expdp). In Source DB it tries to purge the mview log and at destination mview itself. You must have an Materialized View Log on the target table in order to be able to fast refresh a view in Oracle. Mahaveer Jain In Database Technology since past 14+ years, have worked in Oracle, Cassandra, Postgresql from database designing , plsql programing to DBA activities. Long time Oracle developer, first time poking with imp - I'm trying to find the definition on a materialized view from the dmp file, using windows. EXPDP - ORA-39127 And ORA-00904 ("TRANS_NAME": Invalid Identifier) On MATERIALIZED_VIEW_LOG (Doc ID 1571598.1) Last updated on APRIL 03, 2020. With classic exp you can export materialized views with either owner=<> or full=y. exporting materialized views. First, let's use the oerr command to see details on the ORA-00942 error: ORA-00942 table or view does not exist Cause: The table or view entered does not exist, a synonym that is not allowed here was used, or a view was referenced where a table is required. exporting job queues. I want to export the definition and data for most of the schema, but exclude the rows for some of the larger tables. As we know why do we need materialized view in Oracle? CREATE MATERIALIZED VIEW mv_fast_demand_scheduled_tab1 REFRESH FAST ON DEMAND START WITH SYSDATE NEXT SYSDATE + 1/1440 AS SELECT * FROM tab1@orasoa_link; create materialized view mv_count_tab2 build immediate refresh complete as select count(1) from tab2@orasoa_link . Hi all, I just took over a db, and there is an expdp done monthly which exclude the following - materialized view - materialized view logs - refresh group This expdp dump is then use to import into test and trial environment. but can't locate the object I'm looking for - only the synonym of the same name. redesign the system and eliminate those “tough” queries; cache the results of such queries; using materialized views. Mview are local copies of data located remotely, or are used to … In order to disable that you must break the dbms_job that was created in order to refresh the view. Use the "ON PREBUILT TABLE" clause. Recently I had to drop a couple of large Materialized View. ORA-00942 on materialized view refresh. 3) Import the table into the other db 4) Rename the table to the old mv name 5) create a materialized view (using the old definition), but tell it to use the table you just brought over. Re: Export Materialized view: Author: Ales Kavsek, Slovenia: Date: Apr 26, 2010, 16:14, 3885 days ago: Score: Message: Hi, > exp user1/user1 file=exp.dmp log=exp.log tables= tab1 statistics=none No, you can not. 1) Create a table based on the materialized view create table new_ as select * from ; 2) Export the table. Symptoms Fast refreshes have the benefit of not taking much time. exporting refresh groups and children. I see the following messages in the expdp log : "FLASHBACK automatically enabled to preserve database integrity." I've used: imp userid=dev/pwd file=C:\OraExports\DEV.dmp show=Y fromuser=devmgr touser=devmgr 2> c:\scott_all.txt. 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