How To Fix RSCV525 - ORACLE: Index &1 has possibly degenerated


RSCV525 - Overview

  • Message type: E = Error

  • Message class: RSCV - Analysis of BW objects (InfoCubes...)

  • Message number: 525

  • Message text: ORACLE: Index &1 has possibly degenerated

  • Show details Hide details
  • What causes this issue?

    Index &v1& is <ZK>possibly</> corrupt. It contains &v2& blocks, whereas
    table &v3& contains only &v4&. This could indicate that the index is
    corrupt, but is not proof that this is actually the case.
    <ZH>Background:</> There is no exact method of identifyiong a corrupt
    index. The only way to tell if an index has been corrupted is, for
    example, to delete the index and reconstruct it, paying attention as
    you do so to how the memory usage changes during the process.

    System Response

    Using this index to access the system, is no longer efficient and leads
    to impaired performance. The index needs to be reconstructed.

    How to fix this error?

    The index must be repaired. Use a repair routine that has been assigned
    to this analysis routine (function <PF>Remove Errors
    </> in transaction <ZH>RSRV</>).
    Alternatively, you can delete and reconstruct the index manually by
    using the ABAP data dictionary.
    If after you have repaired the index &v1&, the system still tells you
    that the index is <ZK>possibly corrupt</>, then there has been a
    mistake in the way the index has been assessed. The index is not really
    corrupt at all, and you can ignore the warning message in this case.

    Procedure for System Administrators

    The system issues an error message and will not allow you to continue with this transaction until the error is resolved.


    Error message extract from SAP system. Copyright SAP SE.


Smart SAP Assistant

  • What is the cause and solution for SAP error message RSCV525 - ORACLE: Index &1 has possibly degenerated ?
    The SAP error message RSCV525, which states "ORACLE: Index &1 has possibly degenerated," typically indicates that an index in the Oracle database has become inefficient or fragmented, leading to performance issues when accessing the associated table. This can happen due to various reasons, such as frequent updates, deletes, or inserts on the indexed table, which can lead to a situation where the index no longer provides optimal performance.
    
    Cause: Fragmentation: Over time, as data is modified, the index can become fragmented, leading to inefficient access paths. Data Changes: Frequent changes to the underlying data (inserts, updates, deletes) can cause the index to become less effective. Statistics: Outdated or missing statistics can lead the Oracle optimizer to make poor decisions regarding index usage. Index Structure: The structure of the index may not be optimal for the current data distribution.
    Solution: Rebuild the Index: The most common solution is to rebuild the index. This can be done using the

    Already have an account? Login here!




Instant HelpGet instant SAP help. Sign up for our Free Essentials Plan.


Related SAP Error Messages

Click the links below to see the following related messages:

Click on this link to search all SAP messages.


Rating
The AI Support Assistant is great. It provides comprehensive assistance even on the most difficult issues. I highly recommend this service.
Rate 1
John Jordan
SAP Consultant & Author