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Status Submitted
Workspace Db2
Components Db2 on-premise
Created by Guest
Created on Apr 14, 2026

RELATED IDEAS

Provide a dedicated metric to monitor the exact physical/logical size of individual indexes separately

Problem Statement & Real-life Scenario: In large-scale enterprise environments (e.g., SAP on Db2 and etc), tables often have dozens of indexes. Currently, built-in routines such as ADMIN_GET_INDEX_INFO only return the aggregated size of ALL indexes defined on a table (or data partition) for the INDEX_OBJECT_L_SIZE and INDEX_OBJECT_P_SIZE metrics. When a table's total index object size grows exceptionally large, DBAs cannot identify which specific index is the root cause of the abnormal growth.

Current Workaround(s): There is no official or technical workaround to determine the exact physical and logical disk space allocated for a single, specific index. DBAs are forced to treat the index object as a single black box.

Proposed Solution(s): Introduce a new administrative routine (e.g., a table function) or extend existing catalog views to report the exact P_SIZE and L_SIZE strictly at the individual index level (INDNAME / IID), regardless of whether the table is partitioned or non-partitioned.

Benefits/Value & Impact: This capability is crucial for advanced database administration. It enables DBAs to perform precise capacity planning and proactive storage tuning. Specifically, it allows us to calculate the exact expected storage reclamation ROI before dropping unused or redundant indexes. This impacts all enterprise DBAs who manage storage daily.

Needed By Quarter
  • Guest
    Apr 17, 2026

    I strongly support this proposal.

    Providing granular P_SIZE and L_SIZE metrics at the individual index level (INDNAME/IID) will enable:

    1. Precise ROI Analysis: Accurate estimation of reclaimed space before dropping unused indexes.

    2. Effective Maintenance Planning: Identifying exactly which index requires a REORG or compression.

    3. Proactive Capacity Management: Better visibility into storage growth patterns.

    This is a much-needed enhancement for modern database administration.

    Reply
  • Guest
    Apr 15, 2026

    I’m all for it. This is a must-have feature for our workf

    Reply

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