oracle create materialized view

needed, in the Generate Data 2,refresh clause: Define data Synchronization refresh, when a DML operation occurs on the base table, when the manifested view is synchronized with the base table, syntax: [ Refresh [Fast | complete | force] [on demand | commit] N Bsp [start with date] [next date] nbsp [with {PRIMARY key | Rowid}]]fast uses an incremental refresh to refresh only the modifications made since the last refresh, if the refresh FAST

Oracle view, oracle view Creation Oracle ViewSimple View View a virtual table that contains a series of columns and row data with names, just like a real table.However, the

';Modify the maximum number of connectionsAlter system set processses = 300 scope = spfile;When the maximum number of connections to the database is not enough, the client connection will fail intermittently, And the ORA-12519 is reported.How to modify the maximum number of connections in Oracle1. Go to "SQL * Plus Worksheet", as shown in.2. Click "Change Database Connection ..." As shown in.3. Enter the "database connection information" interface, enter the user name, password, and name of the

user name, password, and name of the database service for which you want to modify the maximum number of connections. Select "SYSDBA" as the connection identity and click "OK", as shown in.4. Enter the command "show parameter processes;" and run the command to view the current maximum number of connections, as shown in.5. Run the command "alter system set processes = 600 scope = spfile;" and change the maximum number of connections to 600, as shown i

Tags: ... to_char AC date rem role create name MatSELECT * from v$access O WHERE o.type like ' procedure% 'Create materialized views and refresh periodicallyCreate materialized view Mv_name Refresh Force on demand start with Sysdate next Sysdate + 1Create

information.You can locate a SQL based on address and hash_value. Sql_text Word Gencun The first 1000 characters of this SQL. Finding the entire SQL also needs to go to V$sqltext or v$sqltext_with_newlines.2.1.3 V$sessionV$session is the basic information view that is used to find the user SID or Saddr. However, it also has some columns that change dynamically and can be used to check the user.2.1.4 V$sesstatThe session ID can be used to get the stat

[Oracle] Chapter 3 index view sequence and Chapter 3 View Chapter 3 index view Sequence Sequences are database objects used to generate unique, continuous integers. A sequence is used to automatically generate a primary key or a unique key value. Create sequence sequence_nam

Create and use oracle sequence, and create oracle SequenceCreate and use an oracle sequence (16:14:09)---------------------------------------------------------------------------------------------------Reprinted token ----------------------------------------------------------

Create users and permission settings in Oracle, create permissions in oracleOracle user creation and permission settings Permission: Create session Create table Unlimited tablespace Connect Resource Dba Example: # Sqlplus/nolog SQL> conn/as sysdba; SQL>

primary key.3, Maintenance Convenience: If a partition of the table fails, you need to repair the data, only repair the partition; You must redefine the table in the same outline.4. You cannot have a NOT NULL constraint on new columns until the redefine operation is complete.5. The table cannot contain long, bfile, and user types (UDTs).6. The linked list (clustered tables) cannot be redefined.7. The table cannot be redefined in SYS and the system outline.8. You cannot redefine a table with

What is the Oracle character set? How to view the database character set? Explains how to modify the character set of oracle.1. What is the Oracle character set? The Oracle character set is a collection of symbols for the interpretation of byte data. It can be divided into d

Tags: http using os IO file data for 2014Recently depressed character set July 31, 2014 16:32:58This article focuses on the following sections: How to view queries for Oracle character sets, modify set character sets, and common Oracle UTF8 character set and Oracle exp character set issues.I. What is the

Most people are used to the operations of other databases. One field is an auto-incrementing sequence field, but Oracle-related help is queried. View the relatedArticle, Repost this article to share with you // Create a sequenceCreate sequence car_guid increment by 1; // Create a tableCreate Table car(Guid number

1. Authorize a user to view sys. v $ SQL _plan 2. Create a plan_table-like View SQL> create or replace view dynamic_plan_table23 select rawtohex (address) | '_' | child_number statement_id,4 sysdate timestamp, operation, options, object_node,5 object_owner, object_name, 0 ob

ViewA view is a unique object in a database. Views are used to store queries, but data is not stored (except materialized views ). This is an important difference between a view and a data table. You can use views to query, insert, update, and delete data.There are 4 Central views in Oracle:1. Relationship View2. Embed

How Does Oracle view the execution plan of an SQL statement based on the dynamic performance view? How Does Oracle view the execution plan of an SQL statement based on the dynamic performance view? 1. Authorize a user to

How to use Oracle to conveniently view alarm log errors and oracle logs I checked the information on the Internet for a few days and tried to clear the alarm log Content and create an external table to solve this problem. I. Back up and clear alarm logs Back up the daily alarm logs and clear them. 1: Back up alarm logs

just created, right-click New Follow the wizard to create a data source Oracle module Enter the module name and note Select the data source radio button Click on the "Edit" button to the right of "location" to enter the connection information editing interface Data source location name is: hr_locationUsername (user name): Database user name of the table con

[Oracle] Chapter 1 create authorization, Chapter 1 Authorization of oracle Chapter 1 create authorization in ORACLE Run the following command to view control files, data files, and log files: Control File: Desc v $ controlfile; Da

; ALTER DATABASE OPEN;Database altered+ Describe the same Data Dictionary view.SQL> DESC DBA_DATA_FILESERROR:ORA-04043: object DBA_DATA_FILES does not exist* ** Error will appear till we bounce the Database/flush the shared pool.CAUSEThis is a related to Bug 2365821Abstract: ORA-4043 on dba _ * tables if they are described in a mount stage.SOLUTIONAvailable workarounds are:1) Don't describe the dba _ * views at mount stage.OR2) If you issue DESC of any DBA _ * views at mount stage, then shutdown