Comment on Using Perfsheet and TPT scripts for solving real life performance...
I do accept as true with all the concepts you have introduced for your post. They are really convincing and can certainly work. Nonetheless, the posts are too brief for newbies. May just you please...
View ArticleComment on Oracle Troubleshooting TV Show: Season 1, Episode 01 ;-) by What I...
[...] Filed under: Performance — coskan @ 11:00 pm Update on 07/06/11: Please also watch this video tutorial from Tanel Poder after you read this [...]
View ArticleComment on What the heck is the SQL Execution ID – SQL_EXEC_ID? by Tanel Poder
@Ganesh Ganesh, nope, as there were many different queries executed in the whole cluster, then these exec IDs don’t have to correspond to each other (assuming that you were talking about a case where...
View ArticleComment on What the heck is the SQL Execution ID – SQL_EXEC_ID? by Tanel Poder
@Paul Janda Paul, this was added to ASH in 11g as in 10g it wasn’t possible to determine from ASH data only whether a query was so active because it took so long time to execute or it was just executed...
View ArticleComment on Tracing Oracle SQL plan execution with DTrace by DB Optimizer »...
[...] http://blog.tanelpoder.com/2009/04/24/tracing-oracle-sql-plan-execution-with-dtrace/ [...]
View ArticleComment on Is this valid SQL syntax? :-) by Slightly Weird Oracle Stuff |...
[...] UPDATE 2: Thanks to Jonathan Lewis also on the Oracle-L list, it seems that Tanel Poder has also come across this. On his blog here. [...]
View ArticleComment on What the heck is the SQL Execution ID – SQL_EXEC_ID? by Chris...
I recently found another use for sql_exec_id. It’s also included in v$open_cursor and not null there for the currently executing statements. I used it in a BEFORE DDL trigger to get more information...
View ArticleComment on Identifying shared memory segment users using lsof by jc nars
Hi Tanel, How do u do…one of the background processes SMON ran up a HUUUUUUUUUUGE trace file that just left 5% free space. And, the rookie dba rm-ed the file…instead of doing something like echo ”>...
View ArticleComment on Identifying shared memory segment users using lsof by Tanel Poder
@jc nars What you can also do is to identify SMON’s spid (16927) and then: 1) ORADEBUG SETOSPID 16927 2) ORADEBUG CLOSE_TRACE As this is SMON, I’m not too comfortable sending oradebug commands to it...
View ArticleComment on Identifying shared memory segment users using lsof by Tanel Poder
@jc nars But yes, the next time I’d just truncate the file with “> filename.trc” … or make sure such traces aren’t dumped at all…
View ArticleComment on Identifying shared memory segment users using lsof by jc nars
Hi Tanel, Thanks much. Following the note “Retrieve deleted files on Unix / Linux using File Descriptors [ID 444749.1]” we did a: head -100 /proc/16927/fd/44 > /tmp/file1 Basically we had wanted to...
View ArticleComment on Advanced Oracle Troubleshooting @OOW 2008 presentation slides and...
Hi Tanel I could not save any of your scripts. It throws “Welcome to the 404 error page! ” Please suggest Thanks Magesh
View ArticleComment on Performance Stories from Exadata Migrations by hrishy
@Tanel Poder Hi Tanel Jut wondering what you think of the new flash log cache for write intensive applications.Since the tail end of the redo logs is stored on the flash will it provide SIGNIFICANT...
View ArticleComment on SQL_ID is just a fancy representation of hash value by SQL Plan...
[...] SQL_ID is just a fancy representation of hash value [...]
View ArticleComment on RMOUG slides, scripts and my seminar logs by earl shaffer
Welcome to the 404 error page! Welcome to this customized error page. You’ve reached this page because you’ve clicked on a link that does not exist. This is probably our fault… but instead of showing...
View ArticleComment on Oracle by earl shaffer
wonder if they will go from Oracle 12 to 14 to skip 13
View ArticleComment on Oracle Core: Essential Internals for DBAs and Developers book by...
I completely agree, it is an awesome book, some of the materials covered are explained differently than in your seminars, it is harder i guess to explain in a book rather than during a seminar where...
View ArticleComment on Performance Stories from Exadata Migrations by ashraa
thanking your usefl informations thanks
View ArticleComment on Library cache latches gone in Oracle 11g by Book Review: Oracle...
[...] the library cache pin allocation latch…”. That particular latch appears to have been removed in Oracle Database 11.1.0.6, however it is not clear if this section of the book is only describing...
View ArticleComment on Read currently running SQL statement’s bind variable values using...
[...] query instead of dumping using errorstack. Tanel Poder gives a example describing with example http://blog.tanelpoder.com/2010/10/18/read-currently-running-sql-statements-bind-variable-values/...
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