The first step when addressing an urgent issue like a database disconnection should be to gather information to understand what actions caused the problem. Collecting all logs and reviewing the technician's actions (Answer D) will help identify what went wrong and guide appropriate remediation. Restoring access quickly is the priority, and without reviewing logs, it would be hard to identify the root cause or prevent further damage.
* Reverting patches (Option A): Reverting patches might cause more issues if the problem isn't directly related to a recent update.
* Reproducing the issue (Option B): Reproduction is useful in a controlled environment but not practical as an immediate first step in production.
* Root cause analysis (Option C): This is necessary but should come after restoring access.
* Performing a quick backup (Option E): While backups are crucial, this step might not help resolve the current access problem and can delay troubleshooting.
CompTIA Server+ Reference:This topic relates to SK0-005 Objective 3.4: Explain troubleshooting theory and methodologies.