<ul><li>Oracle Data Guard is a vital Disaster Recovery solution integrated in Oracle Database Enterprise Edition.</li><li>Key steps to troubleshoot a Data Guard configuration involve checking setup using the "broker" CLI, determining lag between databases, and resolving errors or configuration issues.</li><li>Issues like full Fast Recovery Area (FRA) on the standby database can be resolved by deleting older archivelogs to free up space.</li><li>Ensuring the standby_file_management parameter is set to AUTOMATIC on both primary and standby databases is crucial for sync.</li><li>Cross-testing connections, checking password files, and monitoring alert logs are essential troubleshooting tasks.</li><li>Dropping and recreating the Data Guard configuration with correct parameters can help resolve synchronization issues.</li><li>In cases of missing archivelogs, utilizing RMAN's RECOVER DATABASE FROM SERVICE command on the standby can expedite recovery.</li><li>Monitoring SCN (System Change Number) values on both primary and standby databases can help track synchronization.</li><li>Troubleshooting Data Guard becomes more manageable with these strategies and tips in place.</li></ul>

Troubleshooting Oracle Data Guard

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