Diagnostic Reporting for OCR and OLR Files in Oracle RAC
Which three statements are true about diagnostic reporting for the OCR and OLR files? (Choose three.)
Community Votes
80% of anonymous learners picked answer BDE. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
The question tests knowledge of diagnostic tools for OCR/OLR, with the common trap being confusion about which tools support online operations versus offline-only repairs.
This page explains how to verify the integrity of Oracle Cluster Registry (OCR) and Local OCR (OLR) using utilities like OCRCHECK, OCRCONFIG, CLUVFY, and OCRDUMP. It establishes that OCRCONFIG can repair corrupt OCR files online, while OCRDUMP can dump specific keys from both OCR and OLR online.
Many learners incorrectly select A (OCRCHECK checks OLR) or C (CLUVFY cannot check OLR). OCRCHECK only checks OCR, and CLUVFY can indeed check both OCR and OLR integrity.
Community Discussion (5 comments)
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Expert Analysis
Why the Answer Is Correct
Options B, D, and E are correct because they accurately describe the capabilities of the respective utilities. OCRCONFIG can repair a corrupt OCR file in an online fashion if the clusterware is running on all nodes (Option B). The OCRDUMP utility can dump specific keys from the OLR (Option D) or the OCR (Option E) in an online fashion with clusterware running on all nodes.Why the Other Options Are Wrong
Option A is incorrect because OCRCHECK only checks the integrity of the OCR, not the OLR. Option C is incorrect because CLUVFY can check the integrity of both OCR and OLR (e.g.,cluvfy comp ocr -n all), so stating it cannot check OLR is false.Community Comment Notes
As lcoleandro noted, "A. Incorrect: OCRCHECK checks only the OCR, not the OLR," confirming A is wrong. Another user pointed out, "C: you can use cluvfy comp ocr/olr," verifying that CLUVFY supports OLR checks. The consensus among experienced users aligns with BDE as the correct set.Exam Strategy
Memorize the scope of each diagnostic tool: OCRCHECK (OCR only), OCRCONFIG (manage/repair OCR), CLUVFY (cluster-wide verification including OCR/OLR), and OCRDUMP (dump content of OCR/OLR). Understand which operations can be performed online vs. offline.
Frequently Asked Questions
Can OCRCHECK check the OLR?
No, OCRCHECK only checks the integrity of the OCR, not the OLR.
Does CLUVFY support OLR checks?
Yes, CLUVFY can check the integrity of both OCR and OLR using commands like 'cluvfy comp ocr -n all'.