Oracle drop all views

Introduction to Oracle DROP VIEW statement. To remove a view from the database, you use the following DROP VIEW statement: DROP VIEW schema_name.view_name [ CASCADE CONSTRAINT ]; 1) schema_name. First, you specify the name of schema that contains the view Oracle Database does not drop views, materialized views, and synonyms that refer to the view but marks them INVALID. You can drop them or redefine views and synonyms, or you can define other views in such a way that the invalid views and synonyms become valid again. If any subviews have been defined on view, then the database invalidates the subviews as well. To learn if the view has any subviews, query the SUPERVIEW_NAME column of the USER_, ALL_, or DBA_VIEWS data dictionary views Use the DROP MATERIALIZED VIEW statement to remove an existing materialized view from the database. When you drop a materialized view, Oracle Database does not place it in the recycle bin. Therefore, you cannot subsequently either purge or undrop the materialized view Remove all Views -- drop all user defined views Declare @viewName varchar(500) Declare cur Cursor For Select [name] From sys.objects where type = 'v' Open cur Fetch Next From cur Into @viewName While @@fetch_status = 0 Begin Exec('drop view ' + @viewName) Fetch Next From cur Into @viewName End Close cur Deallocate cu ALL_VIEWS. ALL_VIEWS describes the views accessible to the current user. DBA_VIEWS describes all views in the database. USER_VIEWS describes the views owned by the current user. This view does not display the OWNER column. Column. Datatype. NULL. Description

Oracle DROP VIEW: How to Drop a View in Oracl

  1. The below query will drop all the table which are present in the current user A's schema (normal scenario using user 'A'). select 'drop '||object_type||' '|| object_name || ';' from user_objects where object_type in ('VIEW','PACKAGE','SEQUENCE', 'PROCEDURE', 'FUNCTION', 'INDEX')
  2. I know how to do this for one view (Oracle Entreprise Manager->MySchema->Views->Selecting my view->show object DDL->Save..) I'm using SQL*Plus. oracle ddl oracle-9i. Share. Improve this question. Follow edited Apr 4 '16 at 19:56. Tom V. 15.3k 7 7 gold badges 54 54 silver badges 85 85 bronze badges. asked Sep 17 '14 at 11:32. mounaim mounaim. 571 4 4 gold badges 10 10 silver badges 26 26 bronze.
  3. (A) all views accessible to the current user in Oracle database (B) all views in Oracle database. Query was executed under the Oracle12c Database version. Query. A. All views accessible to the current user. select owner as schema_name, view_name from sys.all_views order by owner, view_name; B. If you have privilege on dba_view
  4. How to drop the Oracle view. Dropping a view is done using DROP VIEW command. Dropping a view has no effect on the base tables on which view is based. Users who were accessing the data of the base tables using view will no longer be able to access the data of the base tables. DROP VIEW view_name; Drop view emp_high_sal
  5. Create, Modify and Drop Tables, Views and Sequences. SQL*Plus accepts SQL statements that allow a user to create, alter and drop table, view and sequence definitions. These statements are all standard ANSI SQL statements with the exception of CREATE SEQUENCE. ALTER TABLE - Change an existing table definition. The table indicated in the ALTER statement must already exist. This statement can be.
  6. Indicates whether the view is enabled for CONTAINERS() by default (YES) or not (NO) This column is available starting with Oracle Database 12 c Release 2 ( CONTAINER_MAP. VARCHAR2(3) Indicates whether the view is enabled for use with the container_map database property (YES) or not (NO



Beim Ausführen in einer indizierten Sicht löscht DROP VIEW automatisch alle Indizes der Sicht. When executed against an indexed view, DROP VIEW automatically drops all indexes on a view. Verwenden Sie sp_helpindex, um alle Indizes in einer Sicht anzuzeigen. To display all indexes on a view, use sp_helpindex Display names of all views from Oracle database. To display names of all views from Oracle database you can use: USER_VIEWS, ALL_VIEWS, DBA_VIEWS, USER_OBJECTS Code language: SQL (Structured Query Language) (sql) OR REPLACE. The OR REPLACE option replaces the definition of existing view. It is handy if you have granted various privileges on the view. Because when you use the DROP VIEW and CREATE VIEW to change the view's definition, Oracle removes the view privileges, which may not be what you want. To avoid this, you can use the CREATE OR REPLACE. Scope of rows: (A) all columns in views accessible to the current user in Oracle database, (B) all columns in a specific view accessible to the current user in Oracle database, (C) all columns in views in Oracle database. Ordered by schema name, table name, column sequence number. Sample results. Here is a view of view columns in Oracle SQL.

Drop all tables, stored procedure, views and trigger

Summary: in this tutorial, you will learn about Oracle updatable view and how to insert or update data in the base tables through a view. A view behaves like a table because you can query data from it. However, you cannot always manipulate data via views. A view is updatable if the statement against the view can be translated into the corresponding statement against the underlying table UNION ALL Views In the last few years, The Big Three have worked specifically on enhancing their ability to do UPDATE, DELETE, and INSERT statements on views based on a UNION ALL operator. Obviously this is good because, as Codd's Rules (quoted at the start of this article) state: Users should expect that views are like base tables Long time ago I needed to delete all indexes on an Oracle It drops all indexes which are not referenced by the constraints of the table. It is important, because the drop statement will fail if the table has a constraint created using the specified index. Just replace the 'my_table' string with the appropriate table name, If you want to use this code. You are here: Home. Programming. How.

sql - index - oracle drop view Oracle: Wenn Tabelle vorhanden ist (10) Der beste und effizienteste Weg besteht darin, die Ausnahme Tabelle nicht gefunden abzufangen: Dies vermeidet den Overhead der Prüfung, ob die Tabelle zweimal existiert I would like to perform a DROP VIEW IF EXISTS... command on an Oracle DB as it can be done on a MySQL database. How can this be achieved? oracle. Share. Improve this question. Follow asked Aug 19 '19 at 14:03. Daniel Gray Daniel Gray. 439 2 2 gold badges 5 5 silver badges 15 15 bronze badges. 3. 1. Oracle's own admin scripts typically just issue a DROP on the object and have notes in the.


ORACLE-BASE - DBA Scripts: compile_all_views.sql : Oracle database SQL scripts. Articles Oracle 8i Oracle 9i Oracle 10g Oracle 11g Oracle 12c Oracle 13c Oracle 18c Oracle 19c Oracle 21c Miscellaneous PL/SQL SQL Oracle RAC Oracle Apps WebLogic Linux MySQ Note that when you drop a view, SQL Server removes all permissions for the view. SQL Server DROP VIEW examples. We will use the sales.daily_sales and sales.staff_sales views created in the CREATE VIEW tutorial for the demonstration. Removing one view example. The following example shows how to drop the sales.daily_sales view from the sample database: DROP VIEW IF EXISTS sales.daily_sales; Code. Dropping Views . Use the SQL command DROP VIEW to drop a view. For example: DROP VIEW Accounts_staff; Modifying a Join View . Oracle allows you, with some restrictions, to modify views that involve joins. Consider the following simple view: CREATE VIEW Emp_view AS SELECT Ename, Empno, deptno FROM Emp; This view does not involve a join operation. If you need to drop all tables in the database with Oracle, here's an easy way! run this command: select 'drop table ', table_name, 'cascade constraints;' from user_tables; Then copy the output and run that as a sql script. By Devon | 2019-12-01T14:21:57-07:00 March 8th, 2008 | Database | 9 Comments. Share This Story, Choose Your Platform! Facebook Twitter Reddit LinkedIn WhatsApp Tumblr. Whenever an oracle object is marked as invalid because of a table, that has been changed, the Oracle professional can change the object to valid by using a SQL*Plus script. This script will search the Oracle data dictionary for invalid objects, create a spool file with the names of the invalid objects, then invoke a script to re-compile all of these invalid objects

Dropping all objects under a schema - Ask TOM - Oracl

Get names of all synonyms from Oracle database. To get names of all synonyms from Oracle database or from an specific table you can use: USER_SYNONYMS, ALL_SYNONYMS, DBA_SYNONYMS, USER_OBJECTS. Privileges may be required to query certain tables or views. The most commonly used to list synonyms in a database are USER_SYNONYMS and USER_OBJECTS. Delete all tables, views, packages, procedures, functions and sequences in your Oracle schema. - delete-objects.sq ORACLE -- drop ALL table constraints. finance_teacher asked. on 2009-10-22. Oracle Database. 10 Comments. 2 Solutions. 2,002 Views. Last Modified: 2013-12-18. What can I run to DISABLE all 15 of This is a bug in Oracle. Before dropping view, query on all_objects table. SQL : SELECT * FROM ALL_OBJECTS WHERE OBJECT_NAME ='MY_MVIEW'; It should return 2 records, ojbect_type = TABLE and Object_type = MATERIALIZED VIEW. But if its showing only one record with Object_type = Table then drop that table from database . Drop table MY_MVIEW PURGE MATERIALIZED VIEW LOG Optional. If specified, the materialized view log will be purged when the table is truncated. DROP STORAGE Optional. If specified, all storage for the truncated rows will be deallocated, except the space that has been allocated by MINEXTENTS. This is the default behavior. REUSE STORAGE Optional. If specified, all storage for the truncated rows will remain allocated to the table

Using the cascade constraints clause in a drop table will force a cascade delete to occur in all child tables. Oracle also has the drop table if exists feature. There are several data dictionary views that allow you to find all foreign reference to an Oracle table, namely the dba_constraints and dba_cons_columns views I modified it to work in Oracle 12c for just one schema: begin for x in ( select VIEW_NAME from DBA_VIEWS WHERE OWNER = '<SCHEMA_NAME>' ) loop execute immediate 'grant select on <SCHEMA_NAME>.' || x.VIEW_NAME || ' to <ROLL_NAME>'; end loop; end Constraints are the ways to enforce data integrity rules in the Oracle database. If we dont require constraint at any point of time, we can drop constraint in Oracle using the alter table command. Lets check with the addition of constraint and then dropping them. Oracle Table creation and Constraint creation

exporting DDL of all views Oracle - Database

Once you have granted privileges, you may need to revoke some or all of these privileges. To do this, you can run a revoke command. You can revoke any combination of SELECT, INSERT, UPDATE, DELETE, REFERENCES, ALTER, INDEX, or ALL. Syntax. The syntax for revoking privileges on a table in Oracle is: REVOKE privileges ON object FROM user; privilege CREATE/ALTER/DROP MATERIALIZED VIEW CREATE MATERIALIZED VIEW [schema.] materialized_view_name [ Physical_Attributes_Clause] [TABLESPACE tablespace] [STORAGE Storage_Clause] [REFRESH [FAST | COMPLETE | FORCE] [START WITH date] - Selection from Oracle SQL: the Essential Reference [Book

List views in Oracle database - Oracle Data Dictionary Querie

Views. This is a query to get all Oracle views that can be viewed by the current user. SELECT VIEW_NAME, OWNER FROM SYS.ALL_VIEWS ORDER BY OWNER, VIEW_NAME. The query can be filtered to return views for a specific schema by adding a where OWNER = 'some_schema' clause to the query For instance, in Oracle 10gR2, there are 398 dynamic performance v$ views. In Oracle 11gR1 there are now 484 dynamic performance v$ views which means that between 10gR2 and 11gR1, there are 86 new v$ views in 11gR1. So how does one find out what all of the dynamic performance views are within Oracle 11g Let's look at an example that shows how to issue a rollback in Oracle using the ROLLBACK statement. For example: ROLLBACK; This ROLLBACK example would perform the same as the following: ROLLBACK WORK; In this example, the WORK keyword is implied so the first 2 ROLLBACK statements are equivalent. These examples would rollback the current transaction A. All materialized views accessible to the current user. select owner as schema_name, mview_name, container_name, query as definition, refresh_mode, refresh_method, build_mode, last_refresh_date, compile_state from sys.all_mviews order by owner, mview_name; B. If you have privilege on dba_mviews

How to Drop a Synonym in Oracle. To remove a synonym that already exists, you can drop it from the database. The syntax for doing this is: DROP [PUBLIC] SYNONYM [schema.] synonym_name [FORCE]; The parameters are: PUBLIC: specifies whether you are dropping a private or public synonym. If you're not sure what type your synonym is, then see the section below on finding all synonyms in a database How to Grant and Revoke Privileges | Create and Drop any User in Oracle Database. Mehmet Salih Deveci April 14, 2020 Leave a comment. I will explain How to Grant and Revoke Privileges in Oracle Database in this post. Let's review the Grant and Revoke Privileges in Oracle. Grant and Revoke Privileges in Oracle. There are two Data Control Language Statements ( Grant and Revoke ) in Oracle. List all scheduler jobs from Oracle database. To list all scheduler jobs from Oracle database you can use: USER_SCHEDULER_JOBS, ALL_SCHEDULER_JOBS, DBA_SCHEDULER_JOBS Hot to set BPM and ADF logger to Trace:32 in BPM - June 8, 2020; JDeveloper : Integratated Weblogic Server not started or Created Domain - June 7, 2020; How to look default EPS or Activity view assigned to user using SQL Query - Primavera P6/Oracle - March 10, 202 ORA-00942: table or view does not exist. To drop a table permanently, you can write a DROP TABLE command similar to the one shown in Listing 5. When you issue the DROP TABLE command with the PURGE option, you can't use the recycle bin to restore a table and its objects, because the table, its contents, and its dependents are permanently removed and the space they occupied is reclaimed.

The syntax to drop a synonym in Oracle is: DROP [PUBLIC] SYNONYM [schema .] synonym_name [force]; PUBLIC Allows you to drop a public synonym. If you have specified PUBLIC, then you don't specify a schema. force It will force Oracle to drop the synonym even if it has dependencies Question: I have a materialized view where I want to manually refresh the materialization.How do I force a refresh of a materialized view? Answer: Oracle provides the dbms_mview package to manually invoke either a fast refresh or a complete refresh, where F equals Fast Refresh and C equals Complete Refresh: execute dbms_mview.refresh('emp_dept_sum','f') Oracle Union All for beginners and professionals with examples on insert, select, update, delete, table, view, join, key, functions, procedures, indexes, cursor etc

Oracle view: Create, modify, recompile, drop , force with

Script to Drop all objects of schema or empty the schema in oracle First you connect to the schema then run the following script. Suppose if you have one schema with name HR then first connect with HR username and password then run the following script. Important Note: Never run the script connec I have my Oracle Support account configured to send me a daily email of hot topics, and I've set it up so that the email lists the 100 bugs that have been updated most recently by Oracle support. One of the bugs that came up on 9th Jan was described as: Bug 18700681 : DROP COLUMNS USING ALTER TABLE VERY SLOW. My first thought when I saw this was that it wasn't a bug it was expected behaviour (with the caveat that very slow might actually mean even slower than the.

Create, Modify and Drop Tables, Views and Sequence

Also, if you want to delete obsolete backup based on your own recovery window criteria (instead of what is configured in RMAN when you do show all), you can specify it as shown below. The following will delete old backups based on recovery window of 10 days. RMAN> DELETE OBSOLETE RECOVERY WINDOW OF 10 DAYS; 6. View Backups After Delete. Personally if what you want is a full schema grant then I'd look at creating a new role, granting everything to that, then you have a schema A full access role that you can just grant to as many different users as you require - i.e. if you have another user that needs similar access, you don't need to go through the hassle of granting all the individual grants again, and if you add a new. Oracle BETWEEN for beginners and professionals with examples on insert, select, update, delete, table, view, join, key, functions, procedures, indexes, cursor etc Oracle Database can use this materialized view log to perform fast refreshes for all fast-refreshable materialized views based on the master table. To fast refresh a materialized join view, you must create a materialized view log for each of the tables referenced by the materialized view. Build: Specifies when to populate the materialized view.

Oracle Update Query for beginners and professionals with examples on insert, select, update, delete, table, view, join, key, functions, procedures, indexes, cursor etc Oracleのビュー(VIEW)を削除するSQLOracleのビュー(VIEW)は作成後でもビューを削除できます。ビューを削除するには「DROP VIEW~」を使います。構文-- ビューの削除DROP VIEW {ビュー} CASCAD I will share all Oracle DBA Scripts ( Oracle RAC, Dataguard, Performance Tuning, Monitoring and etc.. ) in this tutorial series. Let's review the Useful RMAN Backup & Recovery & Restore Scripts in this post. Oracle DBA Scripts All in One Oracle DBA ( Database Administrator ) needs useful scripts to monitor, analyze and check Oracle database for routine database operations and monitoring.

create or replace procedure p as table_or_view_not_exist exception; pragma exception_init(table_or_view_not_exist, -942); attempted_ddl_on_in_use_GTT exception. ALTER VIEW [schema.]viewname COMPILE. Recompiles a view. DROP VIEW [schema.]view_name. Removes a view from the database. Keywords. OR REPLACE. Specifies that the view be replaced if it already exists. FORCE. Specifies that the view be created regardless of whether the view's base tables exist, or whether the owner of the schema has privileges.

DBM 405 Lab 4 PL/SQL Packages Advanced Database Oracle

The following commands remove all the objects created in the above examples. DROP VIEW masters_v; DROP TABLE details; DROP TABLE masters; DROP TABLE masters_2; DROP SEQUENCE details_seq; DROP SEQUENCE masters_seq; DROP TYPE t_details_tab; DROP TYPE t_details_row; PURGE RECYCLEBIN; For more information see WHERE object_type = 'VIEW'; Drop View: Drop View: DROP VIEW <view_name>; SELECT view_name FROM user_views; DROP VIEW date_view; Updatable Views: Note: Updateable views can not include: Set Operators (INTERSECT, MINUS, UNION, UNION ALL) DISTINCT; Group Aggregate Functions (AVG, COUNT, MAX, MIN, SUM, etc.) GROUP BY Clause; ORDER BY Clause; CONNECT BY Clause; START WITH Claus DROP USER: Drop users CREATE VIEW: Create views in the grantee's schema. CREATE ANY VIEW: Create views in any schema. DROP ANY VIEW: Drop views in any schema. UNDER ANY VIEW: Create subviews under any object views. FLASHBACK ANY TABLE: Issue a SQL Flashback Query on any table, view, or materialized view in any schema. This privilege is not needed to execute the DBMS_FLASHBACK procedures

Permanent definierte Views . Views sind virtuelle Tabellen. Das heißt sie werden aus Tabellen zur Laufzeit gebildet. Views lösen viele praktische Probleme, da sie zum einen SELECT-Abfragen überflüssig machen können, oder den Zugriff auf eine Tabelle einschränken können, um Spalten für Anwender zu verbergen. Eine View speichert selber jedoch keine Daten, sondern wendet nur das SQL-Statement an, das bei der View-Definition hinterlegt wurde DELETE . Remove rows from the table with the DELETE statement. Note: You must grant the SELECT privilege on the table along with the DELETE privilege. INDEX . Create an index on the table with the CREATE INDEX statement. INSERT . Add new rows to the table with the INSERT statement. REFERENCES . Create a constraint that refers to the table. You cannot grant this privilege to a role The DBA_UNUSED_COL_TABS view can be used to view the number of unused columns per table. Physical Delete. To physically drop a column you can use one of the following syntaxes, depending on whether you wish to drop a single or multiple columns. alter table table_name drop column column_name; alter table table_name drop (column_name1, column_name2)

If the column you want to drop is having primary key constraint on it then you have to give cascade constraint clause. alter table emp2 drop column (empno) cascade constraints; To drop columns in previous versions of Oracle8.0 and 7.3. and to change the column name in all Oracle versions do the following PL/SQL Rename View - Oracle PL/SQL Tutorial Solution 1. if you want to check table exist or not then query should like below... OR... DECLARE tbl_exist PLS_INTEGER; BEGIN select count (*) into tbl_exist from user_tables where table_name = 'mytable' ; if tbl_exist = 1 then execute immediate 'drop table mytable' ; end if ; END ; --your create table query.. The DROP TABLE oracle command is used to remove a table from the database. The dropped table and its data remain no longer available for selection. Dropping a table drops the index and triggers associated with it. Oracle Views, synonym are not dropped but they become invalid

With DELETE ALL INPUT, RMAN will I have started this blog to share my knowledge and experience with other Oracle DBA enthusiasts.I have experience on database architecture ,design and administrating ranging from 9i,10g,11g on various platforms.My main interests are high availability and disaster recovery solutions for mission critical 24×7 systems. View my complete profile . Simple theme. How to list all triggers from Oracle database. To list all triggers from Oracle database you can query tables: USER_TRIGGERS, USER_TRIGGER_COLS, USER_OBJECTS, USER_PROCEDURES, ALL_PROCEDURES, DBA_PROCEDURES. Privileges may be required for certain queries. Example drop_all.sql. dsp.pkb. dsp.pks. err.pkb. err.pks. file_to_blob.sql. file_to_clob.sql. find_object.sql. ftp.pkb. ftp.pks. gen_health.sql. get_pivot.sql. get_stat.sq

DROP is one of the basic SQL commands, which is used to DROP database objects. Since it's part of ANSI SQL, the DROP command is supported by all major database vendors, including Oracle, MySQL, and Microsoft SQL Server. A SQL DROP TABLE statement is used to delete a table definition and all data from a table, but DROP can also be used to drop index, view, trigger, or any other database object Drop table with CASCADE CONSTRAINTS. SQL> SQL> create table gender_tab ( 2 gender_id char(1), 3 gender_nm varchar2(6), 4 constraint gender_pk primary key (gender_id), 5 constraint gender_id_ck check (gender_id in ('M', 'F')) 6 ); Table created.SQL> SQL> insert into gender_tab values ('F', 'Female'); 1 row created.SQL> insert into gender_tab values ('M', 'Male'); 1 row created drop user data_owner; ORA-01922: CASCADE must be specified to drop 'DATA_OWNER' Why? You can't remove users that own objects! So you need to go in and drop all its tables, views, etc. Or do it in one shot with: drop user data_owner cascade; This is an easy way to wipe all your data. So use with care DROP VIEW. Drop a view. Syntax: DROP VIEW [schema.]view [CASCADE CONSTRAINTS] The picture is good or not from the moment it was caught in the camera ~ Henri Cartier-Bresson Related Oracle Commands

If the view was created WITH CHECK OPTION, then join columns and columns taken from tables that are referenced more than once in the view must be shielded from UPDATE. For a DELETE statement, if the join results in more than one key-preserved table, then Oracle Database deletes from the first table named in the FROM clause, whether or not the view was created WITH CHECK OPTION Luckily Oracle Database offers many ways to simplify this, including: Using views; Virtual Private Database (VPD) In-Database Archiving; Views. The most universal way is to create a view over the top of the table. This contains the query excluding deleted rows. You change your application to query the view instead of the table. For example

19366 views Less than a minute 5 Below are the steps for dropping database in Oracle RAC. 1. Make cluster database to FALSE One thought on Drop database in oracle RAC Rehan says: June 12, 2019 at 10:23 am . Very clear steps to drop database manually. Thanks for sharing. Reply. Leave a Reply Cancel reply. Your email address will not be published. Required fields are marked * Comment. Unless you purge them, Oracle will leave objects in the recyclebin until the tablespace runs out of space, or until you hit your user quota on the tablespace. At that point, Oracle purges the objects one at a time, starting with the ones dropped the longest time ago, until there is enough space for the current operation. If the tablespace data files are AUTOEXTEND ON, Oracle will purge recyclebin objects before it autoextends a datafile SS64; Oracle ; How-to ; An A-Z Index of Oracle SQL commands A ANALYZE AUDIT C CALL Cluster - CREATE CLUSTER - ALTER CLUSTER - DROP CLUSTER COMMENT COMMIT CONNECT CONSTRAINT - Add / Enable Context - CREATE CONTEXT - DROP CONTEXT Controlfile - CREATE CONTROLFILE D Database - CREATE DATABASE - ALTER DATABASE DELETE DESCRIBE Dimension - CREATE DIMENSION - ALTER DIMENSION - DROP DIMENSION Directory.

Drop a column. From Oracle 8i one can DROP a column from a table. Look at this sample script, demonstrating the ALTER TABLE table_name DROP COLUMN column_name; command. Workarounds for older releases: SQL> update t1 set column_to_drop = NULL; SQL> rename t1 to t1_base; SQL> create view t1 as select <specific columns> from t1_base Remove all DEFTRAN errors - only do this as last resort! exec dbms_defer_sys.delete_error(NULL, NULL); Replication Views . Some of the common views used to monitor replication: DBA_REPSITES - Sites that participates in the replication; DBA_REPGROUP - Replication groups; DBA_REPOBJECT - Objects that are replicated (for each group At the most basic level, you may wish to view a list of all the tables owned by the current Oracle user. This can be accomplished with a simple SELECT query on the USER_TABLES data dictionary. Once connected to Oracle, issue this statement: SELECT table_name, owner FROM user_tables ORDER BY owner, table_name

ALL_VIEWS - Oracle Help Cente

EXECUTE IMMEDIATE 'drop table ' || next_row. table_name || ' cascade constraints' There are many ways to oracle delete duplicate rows but keep original .I would be showing off few faster method to achieve it in this post. I will show the method where rowid is used and method where rowid is not used. Please note that you must identify all the column that make the row a duplicate in the table and specify all those columns in the appropriate. 1 drop table时,相关约束被删除如图,经过drop table操作后已找不到相关的constraint 2 drop table时,对相关对象的影响如图,index是在tb1上建立的,view和synonym也是基于tb1建立的(注意这里因为tb1是从recylebin里flashback回来的,因此index的命名由系统自动命名为这种形式).. It's the classic career-limiting maneuver: accidentally deleting data you weren't meant to. It's easy to do this as the result of mistakes such as: Running a test script on production Getting the where clause wrong for a delete Doing this in test or dev is likely to bring the ire of your colleagues in IT. Do this in production and key parts of the business may come to a stop

Schema Visualizer for Oracle SQL Developer - SUMsoft Solutions

Drop all tables in Oracle DB (scheme)

So, we can easily find all the constraints on the table in oracle using data dictionary views.We can then take whatever action like modify, disable, drop , we want to take on these constraints . Constraints are enforcing data integrity rules in the oracle database and we must be careful while modifying/dropping them ALTER DISKGROUP disk_group_1 DELETE ALIAS '+disk_group_1/my_dir/my_file.dbf'; Attempting to drop a system alias results in an error. Files. Files are not deleted automatically if they are created using aliases, as they are not Oracle Managed Files (OMF), or if a recovery is done to a point-in-time before the file was created. For these circumstances it is necessary to manually delete the files, as shown below

A Comprehensive Guide to Oracle View By Practical Example

java2s.com | © Demo Source and Support. All rights reserved Restart all Oracle processes: Enterprise Manager, listener, databases.For the purpose of the demonstration, only the orcl database instance needs to be started and the listener. . oraenv [enter orcl at the prompt In contrary of views, materialized views avoid executing the SQL query for every access by storing the result set of the query. When a master table is modified, the related materialized view becomes stale and a refresh is necessary to have the materialized view up to date. I will not show you the materialized view concepts, the Oracle Datawarehouse Guide is perfect for that. I will show you. Oracle Magazine Subscriptions and Oracle White Papers: Oracle DDL Event Triggers: Version 11.1 : General: Dependant Objects trigger$ dba_triggers: all_triggers: user_triggers : System Privileges: create trigger create any trigger administer database trigger -- required for ON DATABASE alter any trigger drop any trigger: DDL Trigger - Triggering Operations : BEFORE / AFTER ALTER BEFORE / AFTER.

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DROP DATABASE LINK. Drop a Database Link. Syntax: DROP [PUBLIC] DATABASE LINK link_name. Restrictions: You cannot drop a database link in another user's schema and you must specify PUBLIC to drop a PUBLIC database link . A woman is like your shadow - follow her, she flies; fly from her, she follows - Sebastien-Roch Nicolas Chamfort Related Oracle Commands: CREATE DATABASE LINK ALTER SESSION. There are many ways to delete RMAN backups and as a DBA you must know the different ways so that you can keep RMAN and OS disk space clean. Delete all backups To delete all the backups for the target database, use below command RMAN> DELETE BACKUP; The above command will prompt you to confirm the deletion. In case you are sure to delete the backups and want to skip the confirmation prompt then. DROP USER. Drop a user schema including all schema objects (if any). Syntax: DROP USER username [CASCADE] Specify CASCADE to drop all objects in the user's schema. Think of all the beauty still left around you and be happy ~ Anne Frank Related Oracle Commands: CREATE USER ALTER USER Related Views: USER_PASSWORD_LIMITS SESSION_ROLES SESSION_PRIVS SESSION_CONTEXT DBA_TS_QUOTAS USER_TS_QUOTAS. DROP VIEW. The DROP VIEW command deletes a view.. The following SQL drops the Brazil Customers view Got this question over the weekend via a friend and Oracle ACE Director, so I thought I would share the answer here. If you want to quickly generate DDL to create VIEWs for all the tables in your system, the easiest way to do that with SQL Developer is to create a data model

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