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May 11, 2017 · Databases

Why Bind Variables Hurt Oracle Queries: Execution Plans, Histograms & Clustering Factor

The article explains why a seemingly harmless delete statement in an Oracle RAC+DG environment can become extremely slow, covering bind variable peek, execution‑plan changes, histogram effects, AWR/ASH analysis, rolling invalidation, and clustering factor, and shows how to diagnose and mitigate each issue.