Table of Contents Table of Contents Title and Copyright Information Preface Purpose Audience Documentation Accessibility Critical Patches Diversity and Inclusion Related Resources Conventions Screenshot Disclaimer Acronyms and Abbreviations Prerequisites General Prevention Best Practices 1 Troubleshooting Technical Flows 1.1 Where is the Problem 1.2 Preliminary Checks from UI 1.3 Troubleshooting Environmental Issues 1.3.1 Possible Issues While Deploying Services 1.3.2 Possible Issues in Login and Screen Launch 2 Troubleshooting Kafka 2.1 Consumer Services 2.2 Producer Services 2.3 Debugging Consumer/Producer health and troubleshooting 2.4 Configurations 3 Health Checks 4 Troubleshooting Functional Workflows 4.1 Log Analysis 5 Troubleshooting OutOfMemory issues 5.1 Extract Heapdump 5.2 JFR Tool in Java 5.3 Quick Recovery 6 Troubleshooting Deployment Errors/Exceptions A Business Error Codes Index