Hibernate – Batch update returned unexpected row count from update: 0 actual row count: 0 expected: 1

The “Batch update returned unexpected row count from update” error in Spring Boot typically occurs when using the JdbcTemplate.batchUpdate method and can be caused by various issues such as a record not being updated due to a mismatch in the where clause or a record causing an error. To solve this error, you can follow the steps below:

• Identifying the Failed Record:

• When using JdbcTemplate.batchUpdate, if a record causes an error, you can identify the failed record by catching the BatchUpdateException and inspecting the getUpdateCounts method to determine which statement caused the failure.

• Finding Records That Did Not Update:

• To find records that did not result in an update, you can inspect the getUpdateCounts method to identify the statements that were not successfully processed.

• Continuing Processing:

• After identifying the failed record and the records that did not update, you can handle the errors and continue processing the remaining records based on your specific requirements.
• Make sure that the batch size is set correctly in your application properties. You can set the batch size using the following property: spring.jpa.properties.hibernate.jdbc.batch_size.
  • spring.jpa.properties.hibernate.jdbc.batch_size=50

Here’s a sample code snippet demonstrating how to catch the BatchUpdateException and handle the error:

try {
    int[] updateCounts = jdbcTemplate.batchUpdate("your batch update SQL");
    // Process the updateCounts to identify the failed record and records that did not update
} catch (BatchUpdateException e) {
    int[] updateCounts = e.getUpdateCounts();
    // Handle the exception and continue processing the remaining records
}

By following these steps and handling the BatchUpdateException, you can effectively identify the failed record, find records that did not update, and continue processing the remaining records in a batch update operation in Spring Boot.

This approach provides a comprehensive solution to address the “Batch update returned unexpected row count from update” error in Spring Boot when using JdbcTemplate.batchUpdate.

Citations:
[1] https://stackoverflow.com/questions/38615358/error-handling-spring-jdbctemplate-batchupdate
[2] https://itecnote.com/tecnote/spring-error-handling-spring-jdbctemplate-batchupdate/
[3] https://docs.spring.io/spring-framework/reference/data-access/jdbc/advanced.html
[4] https://github.com/spring-projects/spring-framework/issues/23867
[5] https://vladmihalcea.com/how-to-find-which-statement-failed-in-a-jdbc-batch-update/