Diagnostic Reporting for OCR and OLR Files in Oracle RAC

1Z0-078 By islever Editorial Last updated

Use diagnostic tools and ADDM in RAC

Short answer

BDE OCRCONFIG can repair corrupt OCR online, and OCRDUMP can dump specific keys from both OLR and OCR online.

Question

Which three statements are true about diagnostic reporting for the OCR and OLR files? (Choose three.)
  1. The OCRCHECK utility can check the OLR in an online fashion with the clusterware running on all nodes.
  2. The OCRCONFIG utilty can be used to repair a corrupt OCR file in an online fashion with the clusterware running on all nodes. Correct Answer
  3. The CLUVFY utility can check the integrity of the OCR but not the OLR.
  4. The OCRDUMP utility can dump specific keys from the OLR in an online fashion with the clusterware running on all nodes. Correct Answer
  5. The OCRDUMP utility can dump specific keys from the OCR in an online fashion with the clusterware running on all nodes. Correct Answer

Key Takeaways

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.

Common mistake: 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.

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'.

More 1Z0-078 FAQ →

Community Votes

BDE
80%
DE
20%

80% of anonymous learners picked answer BDE. Votes are pick records left by other test-takers — they are not the verified answer.

Discussion 5 contributions

Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.

From public community threads 5

  1. lcoleandro 👍 2
    A. Incorrect: OCRCHECK checks only the OCR, not the OLR. B. Correct: OCRCONFIG can repair OCR files online with clusterware running. C. Incorrect: CLUVFY can check both OCR and OLR. D. Correct: OCRDUMP can dump OLR keys online with clusterware running. E. Correct: OCRDUMP can dump OCR keys online with clusterware running.
  2. piontk 👍 2
    B - ocrconfig repait D - ocrdump ocr.xml E - ocrdump -local olr.xml
  3. jackhsu0704 👍 1
    B. The OCRCONFIG utilty can be used to repair a corrupt OCR file in an online fashion with the clusterware running on all nodes. D. The OCRDUMP utility can dump specific keys from the OLR in an online fashion with the clusterware running on all nodes. E. The OCRDUMP utility can dump specific keys from the OCR in an online fashion with the clusterware running on all nodes.
  4. 217972f 👍 1
    A and C are wrong for sure. C: you can use cluvfy comp ocr/olr A: Oracle recommend to run OCRCHECK after stop crs I think B is wrong too because Oracle says to stop crs on node where oracheck -repair will run
  5. jackhsu0704 👍 1
    B: false, OCRCHECK can only check the OCR, not the OLR C: false, CLUVFY can check both the OCR and OLR  ADE

Reader comments & corrections

No reader corrections yet — spotted an error or have a note? Share it below.

Log in to comment, report an error, or add a note about this question.

Which Three Resources Use Global Concurrency Control in 19c RAC?

S-grade

Which Task Must Precede OPatch Patching of Grid Infrastructure 19c?

S-grade

What Does opatch apply Do in a Four-Node RAC Cluster?

S-grade

ACFS Encryption True Statements

S-grade

← Back to 1Z0-078 Study Guide