Fastest way to execute java

Hi,
I have built a java based server that listens for a
connection via TCP/IP. When one is made it decodes the
message and interacts with a SQLServer database using
the JDBC/ODBC bridge.
Basically my problem is speed! Can anyone give me an
indication as to what it the fastest runtime engine
for implementing this kind of setup? Or any other
advice on improoving speed?
Thanks.A couple of thoughts:
1) You may want to check out the beta JDBC type 4 driver for SQL Server. My assumption is that it has been optimized specifcally for SQL Server while the JDBC-ODBC bridge has not. Then again it is still in beta, so you will have to decide what that means to you.
2) There is signficant overhead in the connect / disconnet logic for JDBC. For best performance open the connect once, and reuse the connection.
3) There is significant overhead in the parsing of SQL by the database engine. For best performance reuse the SQL whenever possible using a prepared statement.
4) Connection pooling, which I believe provides transaction queing and reuse (don't quote me) may be an option that can help control resource usage and reuse. You may want to look into this also.
5) If you are having performance problems, make sure your using optimal SQL. For example(s), using a simple statement like 'select count(*) from aTable' can cause a database engine to read every row in a table (a table scan). If you have large tables, this can kill performance. Be sure to cache frequently used tables and/or rows in the database buffers.
6) Be sure you are giving your database engine the necessary resources (memory, I/O and CPU) to do it's job. Never put log files or redo logs on RAID 5. Raid 1 (mirrored) is preferrable. Seperate index and data from the same table on different physical devices, or seperate RAID sets. Use RAID 1 (mirror) for OLTP whenever practical. For example Using RAID 1 rather than RAID 5 for OLTP order entry should improve performance by at least 30%.
7) If you are using Java 1.4, be sure you are using the -server option.
8) I'm sure there is lots more! But maybe this is already too much information....
Good luck,
Joel

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itsdhanasaraa wrote:
But as this a web application ... By using Runtime i'm getting some probs ..
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Soneca,
You're a complete idiot.
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I'll be sure to ignore you in future other than to point out your crossposts when I find them of course.
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http://forum.java.sun.com/thread.jspa?threadID=764824

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try
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Message was edited by:
sssow
Message was edited by:
sssow

Fastest way to grant cube permissions per AMO (250 roles, 30 cubes)?

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Did you consider XMLA ?
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Solved!
Go to Solution.

Use the Max & Min function node. Not really sure of what the O(n) of that function is.
Adnan Zafar
Certified LabVIEW Architect
Coleman Technologies
Attachments:
maxmin.PNG ‏14 KB

Fastest way to access data between String and char[]

Hi all,
I've been programming a small String generator and was curious about the best and fastest way to do so.
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Edited by: airchtit on Jan 22, 2008 6:02 AM

paul.miner wrote:
Better, use a char[] instead of a StringBuffer/StringBuilder, since you seem to know the size of the array in advance.
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3. Or if you're going to be using a plain alphabet, just use (randomNumber + 'a')
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I know I shouldn't put constants in my code, it was just a piece of code done in 1 minute to help a colleague.
Even if it was just a one minute piece of code, I was wondering about the performance problem on large scale calculating, I mean something like a 25 characters word for billions of customers but anyway, once again, the impact should be minimal.
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I

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I'm looking for a way to take 1 file and make many copies of it. Is this fastest way you know of?
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Fredy, did you try with other column names instead of col1?
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Please mark as answer, if this has helped you solve the issue.
Good Luck :) .. visit www.sqlsaga.com for more t-sql code snippets and BI related how to articles.
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With Regards,
Sumodh.P

Fastest way to execute java

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