Introduction to Oracle CREATE SYNONYM statement

  1. First, specify the name of the synonym and its schema.
  2. Second, specify the object for which you want to create the synonym after the FOR keyword.
  3. Third, use the OR REPLACE option if you want to re-create the synonym if it already exists.

How do I create a synonym for schema in Oracle?

Creating Synonym for Schema(User)

  1. select ksppinm, ksppstvl from x$ksppi a, x$ksppsv b where a.indx=b.indx and ksppinm like ‘%schema%synonym%’;
  2. SQL> select user#,name,type#,ctime from sys.user$ where name like ‘TEST%’;
  3. SQL> CREATE SCHEMA SYNONYM TESTSYN for TEST;

How do I create a private synonym in Oracle?

To create a private synonym in another user’s schema, you must have the CREATE ANY SYNONYM system privilege. To create a PUBLIC synonym, you must have the CREATE PUBLIC SYNONYM system privilege. Specify OR REPLACE to re-create the synonym if it already exists.

Why do we create synonyms in Oracle?

A synonym is an alternative name for objects such as tables, views, sequences, stored procedures, and other database objects. You generally use synonyms when you are granting access to an object from another schema and you don’t want the users to have to worry about knowing which schema owns the object.

How do I create a synonym in SQL?

Using SQL Server Management Studio

  1. In Object Explorer, expand the database where you want to create your new view.
  2. Right-click the Synonyms folder, then click New Synonym….
  3. In the Add Synonym dialog box, enter the following information. Synonym name. Type the new name you will use for this object. Synonym schema.

Where can I find public synonyms in Oracle?

select * from all_synonyms where owner IN (‘SCHEMA_USER1′,’SCHEMA_USER2’); If you are logged in as a particular user, then this will show all the synonymns private to the user. select * from user_synonyms; If you are looking for only public synonyms, this query may be close to what you are looking for.

What is an Oracle synonym?

Synonyms are a very powerful feature of Oracle. They are auxiliary names that relate to other database objects: tables, procedures, views, etc. Synonyms can be created as PRIVATE (by default) or PUBLIC. public synonyms are available to all users in the database.

What is the advantage of synonym in Oracle?

Advantages of Using Synonyms You can create a synonym for an object in a schema, and use the synonym in your SQL statement to access the object. If you need to access the underlying object in a different schema, modify the definition of the synonym to point to the object in a different schema.

How do I create a synonym in SQL example?

Can we create synonym for view in Oracle?

You can create a synonym for a table or a view that doesn’t exist, but the target table or view must be present before the synonym can be used. Synonyms share the same namespace as tables or views. You cannot create a synonym with the same name as a table that already exists in the same schema.

Can we create synonym for view in SQL?

How do I create a synonym in Oracle?

The syntax to create a synonym in Oracle is: CREATE [OR REPLACE] [PUBLIC] SYNONYM [schema.] synonym_name FOR [schema.] object_name dblink];

How to create synonyms in Oracle database without schema?

If you omit schema, then Oracle Database creates the synonym in your own schema. You cannot specify a schema for the synonym if you have specified PUBLIC. Specify the name of the synonym to be created. Synonyms longer than 30 bytes can be created and dropped. However, unless they represent a Java name they will not work in any other SQL command.

How do I create all the synonyms in the database?

1. This script must be run by a user with the DBA role. Running this script will in turn create a script to build all the synonyms in the database. This created script, create_synonyms.sql, can be run by any user with the DBA role or with the ‘CREATE ANY SYNONYM’ and ‘CREATE PUBLIC SYNONYM’ system privileges.

How do I drop a synonym in Oracle?

The syntax to drop a synonym in Oracle is: DROP [PUBLIC] SYNONYM [schema.] synonym_name [force];