Explore >> Select a destination
|
You are here 
|
www.xt-r.com | ||
| | | | |
jonathanlewis.wordpress.com
|
|
| | | | | In an earlier articleI described how dbms_xplan.display_cursor() could be used to query memory to find the execution plans (and row source statistics) of recently executed SQL. In 9i, you have to use your own SQL to get the equivalent results. If you do, you should avoid using the "traditional" hierarchical type of query that you... | |
| | | | |
jonathanlewis.wordpress.com
|
|
| | | | | I've discussed the capabilities of the dbms_xplan package in a couple of posts already; and shown how useful it can be in two examples: understanding a problem with filter subquery selectivity and understanding why some Cartesian merge joins were appearing unexpectedly. Let me make a crucial point about execution plans (again): if you have a... | |
| | | | |
jonathanlewis.wordpress.com
|
|
| | | | | Here's a little thing that Dan Morgan mentioned to me some time ago. It's a little routine from a package (owned by sys) that appeared in 11.2.0.3 that gives you some idea of the mess hidden behind a query that uses views. The procedure is called dbms_sql2.expand_sql_text and it takes two (CLOB) parameters: an IN | |
| | | | |
antognini.ch
|
|
| | | |||
