refresh materialized view

First, the basic concept of indexed viewsAn indexed view is actually a view that "materialized" a set of unique values into a clustered index, which is materialized almost as a table, and its data is stored in one copy (it consumes hard disk space, but the query is fast, for example, you can set count (), sum () in an

A solution that prompts "ORA-01788: This query block requires a connect by clause" when creating a remote materialized view on Oracle 11g maps a table on the remote server to a local materialized view, use the following statement: www.2cto.com ---- create database link lnk connect to user1 identified by pwd1 using '(DE

First, the basic concept of indexed viewsAn indexed view is actually a view that "materialized" a set of unique values into a clustered index, which is materialized almost as a table, and its data is stored in one copy (it consumes hard disk space, but the query is fast, for example, you can set count (), sum () in an

1 Preparation work 1.1 Check Initialization parameters Confirm that the gloal_names is true,job_queue_process greater than 0. Perform the following two Sqlplus commands at both the primary and materialized view sites to check that database initialization parameters meet the requirements. Show Parameter Global_names Show parameter Job If the initialization parameter setting does not meet the requirement

How to synchronize two databases in Oracle (using the materialized view) (Oracle snapshot instance) How to synchronize two databases in Oracle (using the materialized view) (Oracle snapshot instance) I. Technical Implementation DetailsUnless otherwise stated, the following SQL commands are run under the SYSETM use

materialized view. The advantage is that data synchronization is provided to the dB to ensure that the application does not need to pay attention to the view. If the trigger fails to be executed, the corresponding source table operations will also be rolled back, and the development of the corresponding trigger program is insufficient. This article mainly descri

In the materialized view test manual, the view is an SQL statement that requires two-way data synchronization when data changes are small and data needs to be used twice, the execution plan must be re-generated and re-executed for each query. In the materialized view test ma

Using triggers to realize the materialized view on the e-commerce platform, we sometimes need to perform some aggregate calculations on user orders, such as the total number of orders, the total amount, and the average price, there are several ways to implement this feature: 1. When you query these aggregate information, execute the SQL statement sum, avg, count, and so on. The advantage is that the impleme

Materialized View and job timed update example -- create test table create table test_dm_rep_m_gw_user as select * from dm_rep_m_gw_use t where t. month_no

Materialized views Overviewhttp://blog.csdn.net/tianlesoftware/article/details/4713553http://blog.csdn.net/hdhai9451/article/details/3875172Materialized view fast refresh related materialized view loghttps://docs.oracle.com/cd/B10501_01/server.920/a96567/repplan.htm#16628Htt

In the morning, a friend in the forum encountered the following error when trying to invalidate the index: ORA-02243: the alter index or alter materialized view option is invalidThe statement used is as follows: Alter index index_name disable; When I first saw it, I thought it was because of constraints, so I could not disable the index, because I remember that I had an impression in the previous primary k

Tags: art limited to_date zed LIS creat rom Upper testI. Creating a remote materialized view log SOURCE side: CREATE materialized VIEW LOG on Tozwdb.test tablespace tozwdb_data with ROWID; Ii. Rights of payment Target Library Create user tozwdb identified by Tozwdb_dev;Grant create session to TOZWDB;Grant resource to t

Label:first, the basic concept of indexed views An indexed view is actually a view that "materialized" a set of unique values into a clustered index, which is materialized almost as a table, and its data is stored in one copy (it consumes hard disk space, but the query is fast, for example, you can set count (), sum (

Tags: naming bin Sch clustered User Web page binding modeling altfirst, the basic concept of indexed views An indexed view is actually a view that "materialized" a set of unique values into a clustered index, which is materialized almost as a table, and its data is stored in one copy (it consumes hard disk space, but t

This example describes the Android view refresh mechanism. Share to everyone for your reference, specific as follows: I. GENERAL description In Android's layout system, the parent view is responsible for refreshing, layout, and displaying child view, and when the child view