> For the complete documentation index, see [llms.txt](https://docs.pentaho.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pentaho.com/pdia-data-integration/9.3-data-integration/data-integration-issues/troubleshooting-database-connections.md).

# Troubleshooting database connections

If you have issues with database connection in PDI, check to see if any the following conditions apply to your situation.

[Unsupported databases](/pdia-data-integration/9.3-data-integration/data-integration-issues/troubleshooting-database-connections/unsupported-databases.md)

[Database locks when reading and updating from a single table](/pdia-data-integration/9.3-data-integration/data-integration-issues/troubleshooting-database-connections/database-locks-when-reading-and-updating-from-a-single-table.md)

[Force PDI to use DATE instead of TIMESTAMP in Parameterized SQL queries](/pdia-data-integration/9.3-data-integration/data-integration-issues/troubleshooting-database-connections/force-pdi-to-use-date-instead-of-timestamp-in-parameterized-sql-queries.md)

[PDI does not recognize changes made to a table](/pdia-data-integration/9.3-data-integration/data-integration-issues/troubleshooting-database-connections/pdi-does-not-recognize-changes-made-to-a-table.md)


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