When encountering the error 2200N: Invalid XML Content from a PostgreSQL database, here are immediate actions to take:
- Identify the problematic query or data:
- Try to pinpoint the query or operation that led to this error. If you have access to application logs or the PostgreSQL log, search for any entries related to the error. The PostgreSQL log file location varies depending on the operating system and PostgreSQL configuration but is often found in
/var/log/postgresql/ on Linux systems.
- Validate the XML content:
- If you know which XML content triggered the error, validate it using an XML validator tool or online service to ensure it's well-formed. This step helps in identifying any syntax errors or issues in the XML structure.
- Check for non-XML data in XML columns:
- Run a query to check for any non-XML data in columns that are supposed to contain XML. You can use the
is not document condition to find non-XML data: SELECT * FROM your_table WHERE your_xml_column IS NOT DOCUMENT;
- Replace
your_table and your_xml_column with the actual table and column names.
- Examine recent changes:
- If this error started occurring recently, check for any recent changes to the database schema, application code, or data imports that might have introduced invalid XML content.
- Manual examination and correction:
- For identified invalid XML entries, manually correct them if the dataset is small, or prepare a script to automate corrections if possible and safe. Always back up the data before making bulk changes.
- Check database encoding:
- Ensure the database encoding supports the characters used in your XML data. You can check the database encoding with the following SQL command:
SHOW SERVER_ENCODING;
- Reindex the XML column (if applicable):
- If you suspect index corruption or issues, consider reindexing the XML column. This is more of a precautionary step and might not directly resolve invalid XML content issues but can help if the error is related to index corruption:
REINDEX TABLE your_table;
Take these steps sequentially or selectively based on your situation and the information available to you about the error context.
