"Explain Plan" in Oracle SQL Developer is greyed out

Hi all,
I know this is not the right place to post this, but I have look around and do not know where to post question about Oracle SQL Developer - I presume this tool is also discussed here in this forum.
My question is very simple (I presume):
1. I installed Oracle SQL Developer 3.0.04.
2. I added a new DB connection to a DB hosted in one of my servers in the LAN.
3. However, when I am writing some SQL queries, I intend to use the "Explain Plan" feature, but it is being greyed out (disabled).
4. How can I enable it back?

Hello,
{forum:id=260}
Regards
Marcus

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Explain Plan in Pl/SQL developer tool

How to get the explain plan result of a query in PL/SQL developer tool which has a database link ?
Also, please suggest the min and max Cost, Cardinality and byte values
Thanks

859486 wrote:
How to get the explain plan result of a query in PL/SQL developer tool which has a database link ?PL/SQL Developer is a tool written by allround automations.
I suggest you ask how to use that tool vie the support option on their own website/forums:
http://www.allroundautomations.com/plsqldev.html
Also, please suggest the min and max Cost, Cardinality and byte valuesmin cost would be 0
max cost could be anything
cardinality is http://en.wikipedia.org/wiki/Cardinality_%28SQL_statements%29
bytes are the number of estimated bytes involved in the data retrieved/processed.

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You have started this annoying discussion.
I don't have any problems with my OS instead of you.
I have already told you what to do, if you have no idea how to do that just go and buy yourself another support subscription from your mac support.
The missing class is not available from any code-source or loader in the system. check that.
what version of JAVA do you have in your fancy OS? most of the time upgrade java to the latest version will fix the issues.
Update java from sun website not from another mac tore.

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885173 wrote:
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- K - :
Oh, I get it... We had another pesky drop-out fishing for homework cheats again, right?
Here's a suggestion to make this forum (you know, a place where people come together who all think differently about things both deep and shallow) somewhat more accepting and useful a place for idiots like me who might happen to overlook an apparently obvious "Help" menu item with the glowing neon-colored label heading of "Table of Contents": instead of wasting your own time (let alone, others) by posting silly responses that serve arbitrary agendas for the sake of inflating one's ego and online rep points due to having a bad high school experience, why not just instead take a high road (all the real Oracle kings around here hopefully take) and either ignore the response altogether or post something at least 1% useful. Sound like a plan? Great! For instance, why not inquire about why someone posted something that might not make sense to you? It's an amazing concept...
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Roger25 wrote:
... Based on this, my question is what statement to choose? which is more important, the cost or the cpu cost?
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