How do I delete synonyms in Oracle?

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

How do I delete synonyms?

To drop a private synonym, either the synonym must be in your own schema or you must have the DROP ANY SYNONYM system privilege. To drop a PUBLIC synonym, you must have the DROP PUBLIC SYNONYM system privilege. You must specify PUBLIC to drop a public synonym.

How do I delete a drop table in Oracle?

When issuing a DROP TABLE statement in Oracle, you can specify the PURGE option. The PURGE option will purge the table and its dependent objects so that they do not appear in the recycle bin. The risk of specifying the PURGE option is that you will not be able to recover the table.

Does drop table drop synonym?

DROP TABLE does not remove any synonyms for the table that were created in an external database. To remove external synonyms for the dropped table, you must do so explicitly with the DROP SYNONYM statement.

How can I drop multiple synonyms in Oracle?

In this syntax:

First, specify the name of the synonym that you want to remove after the DROP SYNONYM keyword. If the synonym belongs to a schema, you must specify its schema name.
Second, use the FORCE keyword to delete the synonym even if it has dependent tables or user-defined types.

What happens to synonym when table is dropped in Oracle?

All synonyms for a dropped table remain, but return an error when used. All extents allocated for a table that is dropped are returned to the free space of the tablespace and can be used by any other object requiring new extents or new objects.

What is Oracle SQL synonym?

Use the CREATE SYNONYM statement to create a synonym, which is an alternative name for a table, view, sequence, procedure, stored function, package, materialized view, Java class schema object, user-defined object type, or another synonym. Synonyms provide both data independence and location transparency.

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. They work like Unix hard links; a pointer to point to an object that exists somewhere else. Synonyms can be created as PRIVATE (by default) or PUBLIC.

How do you completely delete a table in Oracle?

Use the DROP TABLE statement to move a table or object table to the recycle bin or to remove the table and all its data from the database entirely.

What is on delete cascade?

Use the ON DELETE CASCADE option to specify whether you want rows deleted in a child table when corresponding rows are deleted in the parent table. If you do not specify cascading deletes, the default behavior of the database server prevents you from deleting data in a table if other tables reference it.

How do I drop a synonym in Oracle?

Here is the basic syntax of the DROP SYNONYM statement: First, specify the name of the synonym that you want to remove after the DROP SYNONYM keyword. If the synonym belongs to a schema, you must specify its schema name. If you skip the schema name, Oracle will assume that you delete the synonym in your own schema.

How do I drop a synonym in a schema?

If you want to drop a private synonym, you must be the owner of the schema to which the synonym belongs or you must have the DROP ANY SYNONYM privilege. In case you want to drop a PUBLIC synonym, you must have the DROP PUBLIC SYNONYM privilege. Oracle DROP SYNONYM example.

How do I drop object type synonyms with dependencies?

If an object type synonym has any dependent tables or user-defined types, then you cannot drop the synonym unless you also specify FORCE. Specify FORCE to drop the synonym even if it has dependent tables or user-defined types. Oracle does not recommend that you specify FORCE to drop object type synonyms with dependencies.

How do I remove a synonym from a table?

Second, use the FORCE keyword to delete the synonym even if it has dependent tables or user-defined types. To drop a public synonym, you use the PUBLIC keyword as follows: