# Clear cached database metadata

When working with complex transformations or jobs, Pipeline Designer might accumulate outdated or incorrect metadata due to changes in the underlying database. You can use the Clear Complete DB Cache option to clear out the outdated or incorrect metadata the next time you access the transformation or job. 

Cached metadata might include information about:

* Table structures
* Column types
* Indexes
* Primary and foreign keys
* Other schema-related metadata

**Note**: Clearing cached database metadata does not delete any data from your database, affect transformation or job files, or clear runtime data caches that are used during execution.

To clear cached database metadata, complete the following steps:

1. With a transformation or job open, on the left side of the Pipeline Designer interface, click the **View** icon. The **View** pane opens with the Transformations folder expanded, containing the **Database Connections** list.
2. Find **Database Connections**, click the **More Actions** icon, and then select **Clear Complete DB Cache**. The cache is cleared, and a Success message is displayed. Fresh metadata is retrieved from the database the next time you access it.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.pentaho.com/pba/pipeline-designer/managing-transformations-and-jobs/manage-connections-for-transformations-and-jobs/clear-cached-database-metadata.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.