How to Find the Creation Time of a Sequence in Oracle

1 year ago
Isabella Edwards
2 minutes

In Oracle, you can’t directly view the creation time of a sequence, but you can find it by querying the database’s metadata views. This guide will show you how to use user_objects, all_objects, and dba_objects to get the information you need.

Querying Sequence Creation Time

You can find the creation time of a sequence by querying the CREATED column in several metadata views. Here are two common methods:

  1. Querying a specific sequence: To find the creation time of a specific sequence, use the following SQL statement, replacing 'YOUR_SEQUENCE_NAME' with the name of your sequence:

    SELECT created FROM user_objects WHERE object_name = 'YOUR_SEQUENCE_NAME' AND object_type = 'SEQUENCE';

  2. Listing all sequences with creation and modification times: To get a list of all sequences with their creation and last modification times, use this query:

    SELECT object_name, created, last_ddl_time FROM user_objects WHERE object_type = 'SEQUENCE';

Understanding Metadata Views

The queries above use the user_objects view, which shows all objects owned by the current user. If you need to query sequences owned by other users, you can use the all_objects or dba_objects views:

  • all_objects: This view displays all objects that the current user has permissions to view.
  • dba_objects: This view shows all objects in the database, but you need DBA privileges to access it.

Interpreting the Results

The CREATED column in these views shows the timestamp when the sequence was created. The LAST_DDL_TIME column indicates the last time the sequence was altered. By understanding these views and columns, you can effectively track and manage your Oracle sequences.

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