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Understanding SQLTXPLAIN Health-Checks
SQLTXPLAIN (SQLT) collects diagnostics details about a SQL statement that either performs poorly or it produces unexpected results (also known as wrong results). In addition to that, it also performs...
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Oracle Queries are taking different Plans
I recently saw a post with this title “Oracle Queries are taking different Plans” and since there was a lot of guessing I suggested to use SQLTXPLAIN and find there the root cause. For some reason or...
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SQLTXPLAIN under new administration
With great pleasure I am announcing here that SQLTXPLAIN (SQLT) is “under new administration”. What does it mean? In short, almost nothing to you. Under the covers, it means you will start seeing a new...
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SQL Tuning with SQLTXPLAIN 2-days Workshop
SQLTXPLAIN is a SQL Tuning tool widely used by the Oracle community. Available through My Oracle Support (MOS) under document 215187.1, this free tool is available for download and use to anyone with...
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YASTS: Yet Another SQL Tuning Script: planx.sql
Having SQLTXPLAIN and SQLHC available, WHY do I need yet another way to display execution plans? New script planx.sql reports execution plans for one SQL_ID from RAC and AWR. It is lightweight and...
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A healthy way to do an Oracle database health-check
Q: How do I do an Oracle database health-check? A: It all depends. (hint: we can use this answer for most Oracle related questions in general and Performance related in particular, but don’t try it at...
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Carlos Sierra’s shared Scripts and Presentations
I recently delivered 3 sessions at the East Coast Oracle Users Group (ECO). During these sessions I offered to share the actual Presentations and some of the Scripts I used during the 3rd session. I...
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Meet “edb360″: a free tool that provides a 360-degree view of an Oracle database
Besides been what I consider a horrendous color, “edb360” also stands for Enkitec’s “database 360-degree” view. Simply put: edb360 is a new free tool that provides a 360-degree view of an Oracle...
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Why using SQLTXPLAIN
Every so often I see on a distribution list a posting that starts like this: “I upgraded my application from database release X to release Y and now many queries are performing poorly, can you tell...
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SQLTXPLAIN under new administration
During my 17 years at Oracle, I developed several tools and scripts. The largest and more widely used is SQLTXPLAIN. It is available through My Oracle Support (MOS) under document_id 215187.1....
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