Table of Contents
- 1 How do I fix an invalid view in Oracle?
- 2 How do you make an invalid object valid in Oracle?
- 3 How do I recompile all invalid objects?
- 4 How do you change view?
- 5 How do I fix invalid objects in Oracle 12c?
- 6 What causes invalid objects in Oracle?
- 7 What causes a materialized view to become invalid?
- 8 How do I recompile a view in Oracle?
- 9 How to check if a view is invalid or not?
- 10 How to find invalid objects currently present in the database?
- 11 What is compcompile invalid objects in Oracle?
How do I fix an invalid view in Oracle?
You Asked
- create table jay_test_views.
- create view jay_test_views_v.
- select * from jay_test_views_v.
- alter table jay_test_views rename column col2 to col3 (good return code)
- select * from jay_test_views_v.
- alter view jay_test_views_v compile (good return code)
- select * from jay_test_views_v.
How do you make an invalid object valid in Oracle?
Oracle is complex and interconnected and changing things can cause some database objects to become “invalid”. owner, object_type; 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.
Why does a view become invalid?
When an MV is created, the materialized view depends on the master tables referenced in its definition. Any DML operation, such as an INSERT, or DELETE, UPDATE, or DDL operation on any dependency in the materialized view will cause it to become invalid.
How do I recompile all invalid objects?
sql scripts are provided by Oracle to recompile all invalid objects in the database. They are typically run after major database changes such as upgrades or patches. They are located in the $ORACLE_HOME/rdbms/admin directory and provide a wrapper on the UTL_RECOMP package. The utlrp.
How do you change view?
To modify a view
- In Object Explorer, connect to an instance of Database Engine.
- On the Standard bar, click New Query.
- Copy and paste the following example into the query window and click Execute. The example first creates a view and then modifies the view by using ALTER VIEW.
How do I create a valid trigger in Oracle?
If you omit schema , then Oracle Database assumes the trigger is in your own schema. Specify the name of the trigger to be altered. Specify ENABLE to enable the trigger. You can also use the ENABLE ALL TRIGGERS clause of ALTER TABLE to enable all triggers associated with a table.
How do I fix invalid objects in Oracle 12c?
Below is the query to find the invalid objects currently present in the database. set pagesize 200 set lines 200 select owner,object_name,object_type,status from dba_objects where STATUS=’INVALID’; 1. Compile all the objects of the database using UTLRP.
What causes invalid objects in Oracle?
Objects go to an invalid state when a dependency is changed; a view, a package, a table, etc. For example, if you add a column to a table, any dependent views or code (packages or standalone procedures/functions) will be marked as invalid.
How do I manually refresh a materialized view in Oracle?
- Set the initialization parameters and bounce the database.
- Create the materialized view table.
- Create the optimizer statistics and refresh the materialized view.
- Test the materialized view.
- Create the MVIEW log(s) MATERIALIZED VIEW.
- Execute a manual complete refresh.
What causes a materialized view to become invalid?
A materialized view is like any other view in that it is based on one or more underlying base tables. In fact, any change in any table referenced by a materialized view will cause the view to become invalid and unavailable for use. A materialized view is validated each time it is referenced by a query.
How do I recompile a view in Oracle?
Use the ALTER VIEW statement to explicitly recompile a view that is invalid or to modify view constraints. Explicit recompilation lets you locate recompilation errors before run time.
How do you make a trigger valid?
Specify the schema containing the trigger. If you omit schema , then Oracle Database assumes the trigger is in your own schema. Specify the name of the trigger to be altered. Specify ENABLE to enable the trigger.
How to check if a view is invalid or not?
You can however use the DBA_DEPENDENCIES view to check which objects the views and functions depend on, then query DBA_OBJECTS to check the last_ddl_time for each of these dependant objects – that should give you an indication of which objects have changed and caused the view to be invalid as a result.
How to find invalid objects currently present in the database?
Below is the query to find the invalid objects currently present in the database. 1. Compile all the objects of the database using UTLRP.SQL. This script may take some time, depending on the number of objects. 2. Compile objects of a particular schema:
What can invalidate a materialized view?
When an MV is created, the materialized view depends on the master tables referenced in its definition. Any DML operation, such as an INSERT, or DELETE, UPDATE, or DDL operation on any dependency in the materialized view will cause it to become invalid.
What is compcompile invalid objects in Oracle?
Compile Invalid objects in oracle. Objects in the database can become invalid, if there are any changes to the dependent objects. Even patch and upgrade can also make the object invalid.