Troubleshooting

Welcome to the Troubleshooting section of our OpenMRS archive. This section offers detailed solutions to common issues you might encounter while working with MySQL and OpenMRS.

Whether you're dealing with installation hang-ups, configuration problems, or runtime errors, you'll find step-by-step guidance here to help you overcome these challenges efficiently.

Here's what you can expect from this section:

Common MySQL Issues:

• Configure Instance Hangs on Starting the Service: Find out how to resolve issues where MySQL installation gets stuck during the service startup phase.

• Error 1045: Learn about the potential causes of this error, including conflicts with existing MySQL installations and leftover files, and follow the steps to resolve it.

• MySQL Has Gone Away (Error 2006): Get instructions on how to adjust MySQL settings to handle large data packets and prevent this error.

Running Multiple MySQL Instances:

• Connecting with Multiple MySQL Instances on a Single System: Learn how to configure and connect to multiple MySQL instances on UNIX-based systems to ensure smooth operation of multiple databases.

OpenMRS Specific Troubleshooting:

• Database Update Errors: Discover how to manage database change logs to fix issues like "Could not acquire change log lock."

• Module and Settings Persistence: Find solutions for problems where OpenMRS modules and settings disappear and reappear upon reboot, ensuring consistent behavior.

• Java Compatibility Issues: Address exceptions like java.lang.ClassNotFoundException and UnsupportedClassVersionError by aligning your Java environment with OpenMRS requirements.

• Configuration Challenges: Troubleshoot offline working issues and specific OpenMRS configurations to ensure smooth module operations.

Troubleshooting Exceptions:

• LazyInitializationException: Learn how to manage Hibernate sessions and transactions to avoid this common error during patient data operations.

• UnknownHostException: Handle network-related issues that can occur when working offline, ensuring your OpenMRS module builds successfully.

Participating in Bug Fixing Sprints:

• Bug Fixing Sprint Overview: Get insights into joining community-driven bug fixing sprints, including how to pick tickets and contribute effectively to the OpenMRS project.

This section is a practical guide to troubleshooting and resolving various technical issues you might face while using MySQL and OpenMRS. By providing detailed problem descriptions and solutions, we aim to help you maintain a smooth and efficient working environment.