Even though a number of articles and blog posts have already been written on this topic (e.g. on Pete Finnigan’s site I found references dating back from 2003), from time to time I’m still asked “How to trace predicates generated by VPD?”. Hence, here’s yet another blog post about this topic…
Let’s setup the scene before [...]
The short answer to this question is “yes”, it does. Unfortunately, the distribution costs are not externalized through the execution plans and, as a result, this limitation (yes, it is really a limitation in the current implementation, not a bug) confuses everyone that carefully look at the information provided in an execution plan of a [...]
You can add the COMPUTE STATISTICS clause to the CREATE INDEX statement. It instructs the SQL statement to gather and store index statistics in the data dictionary, while creating the index. This is useful because the overhead associated with the gathering of statistics while executing this SQL statement is negligible. In Oracle9i, the gathering of [...]
Recent comments
21 weeks 2 days ago
31 weeks 17 hours ago
32 weeks 5 days ago
36 weeks 3 hours ago
38 weeks 1 day ago
47 weeks 5 days ago
49 weeks 2 days ago
50 weeks 2 days ago
50 weeks 3 days ago
1 year 1 week ago