How to Get Column List Of Synonym In Oracle?

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To get the column list of synonyms in Oracle, you can query the DBA_SYNONYMS data dictionary view. This view contains information about the synonyms defined in the database, including the columns they reference. By querying this view, you can retrieve the column list of synonyms in Oracle.

How to list all synonyms owned by a specific user in Oracle?

To list all synonyms owned by a specific user in Oracle, you can run the following SQL query:

SELECT * FROM all_synonyms WHERE owner = 'specific_user';

Replace 'specific_user' with the actual username of the user whose synonyms you want to list. This query will retrieve all synonyms owned by the specific user from the all_synonyms data dictionary view.

How to alter the definition of a synonym in Oracle?

To alter the definition of a synonym in Oracle, you can use the following syntax:

ALTER SYNONYM [synonym_name] REPLACE WITH [new_definition];

For example, if you have a synonym called "emp" that points to a table called "employees", and you want to change it to point to a different table called "staff", you can do the following:

ALTER SYNONYM emp REPLACE WITH staff;

Make sure you have the necessary privileges to alter synonyms in the Oracle database.

What is the purpose of the dba_synonyms view in Oracle?

The dba_synonyms view in Oracle displays information about all synonyms in the database, including the owner of the synonym, the name of the synonym, and the underlying object that the synonym points to.

The purpose of the dba_synonyms view is to allow database administrators to easily manage and track synonyms within the database. By querying this view, administrators can quickly see which synonyms exist, who owns them, and what objects they reference. This information is valuable for ensuring data consistency, managing permissions, and troubleshooting potential issues related to synonyms.

How to refresh the definition of a synonym in Oracle?

To refresh the definition of a synonym in Oracle, you can use the following steps:

1. Connect to your Oracle database using a SQL client such as SQL*Plus or SQL Developer.
2. Run the following command to refresh the definition of the synonym:

ALTER PUBLIC SYNONYM <synonym_name> REFRESH;

Replace <synonym_name> with the name of the synonym you want to refresh.

1. Verify that the definition of the synonym has been refreshed by selecting from the synonym or using it in a query.

By following these steps, you can ensure that the definition of the synonym is up-to-date and reflects any changes in the underlying object it references.