Скачать или смотреть Solving the java.sql.BatchUpdateException: ORA-00917 Error in Your JDBC Project

Discover how to fix the `ORA-00917: missing comma` error in your Java JDBC batch update process with clear step-by-step instructions and troubleshooting tips.
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Understanding the java.sql.BatchUpdateException: ORA-00917 Error

If you've encountered the error message java.sql.BatchUpdateException: ORA-00917: missing comma while working with Java and JDBC, you're not alone. This particular error usually signals an issue with the syntax of your SQL query—often, it pertains to how the SQL statement is constructed before it is executed.

What Does The Error Mean?

The ORA-00917 error originates from Oracle's SQL database and indicates that there's a syntax error within your SQL statement. In the case you are facing, it suggests that there's a missing comma within the list of defined fields in your SQL INSERT statement.

Common Causes of This Error:

Incorrect formatting or syntax in the SQL statement.

Specification of data types in the SQL command where they shouldn't be.

Duplicating value assignment in PreparedStatement when adding batch updates.

How to Fix the ORA-00917: Missing Comma Error

To resolve the error you're facing, you can follow these simple steps:

Step 1: Review Your SQL INSERT Statement

Original SQL Statement

[[See Video to Reveal this Text or Code Snippet]]

Key Change

In your SQL statement, you're attempting to define the data types of the columns directly in the INSERT statement. SQL does not require the data types in this context; you should only list the column names.

Remove types from the column definitions.

Updated SQL Statement

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Avoid Duplicating Value Assignments

In your code, you're repeating the setObject calls after adding the batch with pst.addBatch();. These duplicate assignments can also lead to errors in your execution flow. Every time you prepare a new batch, be sure to start from scratch.

Example Code Snippet

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

Once you've made these changes to your SQL query and adjusted for value assignments properly, re-running your Java application should ideally resolve the ORA-00917: missing comma error. It's vital to ensure your SQL syntax is clean and that your PreparedStatements are managed correctly to prevent confusion in your JDBC batch processes.

In case you continue to encounter issues, please review your database schema to ensure that the columns you're attempting to populate indeed exist and match expected data types.

By understanding the specific errors and how to rectify them, you'll not only solve your current dilemma but also enhance your skills in managing SQL queries with JDBC in Java.