RE: RE: c based external procedures vs. Java Stored Procedures
My feeling is that, given the clumsy way external procedures are implemented, the argument of C speed doesn't hold too well. If you must write a function which will be called through IPCs each time you return a row, from instance, C will look javaish in speed. Add to this that static variables cannot be relied upon because the function can be reloaded anytime, that you have to be very careful about the really fun C stuff for fear of interference with Oracle (signals, etc.) - My feeling is that external C functions have no real practical use. If speed is a concern (and it often is) it should be C which calls Oracle, not the reverse. My EUR 0.02 Stephane Faroult - --- Original Message --- - From: Jared Still [EMAIL PROTECTED] To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED] Sent: Thu, 04 Sep 2003 15:49:26 Or Perl... On Thu, 2003-09-04 at 14:54, Richard Ji wrote: so my question is, are there things you can do with external procedures that you cant do with java? Yes there are, for instance, Java doesn't support raw socket, so if you ever need that you will have to do it in C with external procedure. But what's the chance of anyone is going to use such a thing, very little. In general though, you can do most of the stuff in Java Stored Procedures. Richard Ji -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Stephane Faroult INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
Re: c based external procedures vs. Java Stored Procedures
One thing you can do is bypass all of your security if you aren't careful. EXTPROC needs to run as some user other than Oracle (nobody for instance), otherwise you've just created a huge security breach. There are other security implications as well. Even running as 'nobody', you need to ensure that the code is written in a secure manner. As for why you would use them, there are probably more reasons than we can think of here. One that comes to mind is you have data that needs massaged by an algorithm in a purchased library. Rather than writing a whole app to deal with it, you write a wrapper for the purchased functionality and plug it into EXTPROC. You can even do this with Perl. Works very well. :) Jared On Thu, 2003-09-04 at 07:49, [EMAIL PROTECTED] wrote: Ive just started digging into these. Im familiar with Java and C, though Im hardly an expert. It appears that java stored procedures are much easier to use and far more forgiving than C based external procedures. So then I started looking for functionality that external procedures have over java and I cant find any. Since I cant find any, I dont see any reason to spend time learning how to use them. so my question is, are there things you can do with external procedures that you cant do with java? -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: [EMAIL PROTECTED] INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Jared Still INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
RE: c based external procedures vs. Java Stored Procedures
Depends on your developers. We have few JAVA developers, but quite a few C programmers. Plus I've got this great book of math routines in C. Dick Goulet Senior Oracle DBA Oracle Certified 8i DBA -Original Message- Sent: Thursday, September 04, 2003 10:49 AM To: Multiple recipients of list ORACLE-L Ive just started digging into these. Im familiar with Java and C, though Im hardly an expert. It appears that java stored procedures are much easier to use and far more forgiving than C based external procedures. So then I started looking for functionality that external procedures have over java and I cant find any. Since I cant find any, I dont see any reason to spend time learning how to use them. so my question is, are there things you can do with external procedures that you cant do with java? -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: [EMAIL PROTECTED] INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Goulet, Dick INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
RE: c based external procedures vs. Java Stored Procedures
Ryan I'm no expert either. What I heard is that the advantage of external procedures were good where you have something that needs the performance of the underlying system. The C code runs directly on the server, whereas Java is on top of Oracle, which is system-independent. Dennis Williams DBA, 80%OCP, 100% DBA Lifetouch, Inc. [EMAIL PROTECTED] -Original Message- Sent: Thursday, September 04, 2003 9:49 AM To: Multiple recipients of list ORACLE-L Ive just started digging into these. Im familiar with Java and C, though Im hardly an expert. It appears that java stored procedures are much easier to use and far more forgiving than C based external procedures. So then I started looking for functionality that external procedures have over java and I cant find any. Since I cant find any, I dont see any reason to spend time learning how to use them. so my question is, are there things you can do with external procedures that you cant do with java? -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: [EMAIL PROTECTED] INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: DENNIS WILLIAMS INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
RE: c based external procedures vs. Java Stored Procedures
We have tested a product this winter that was using an external C proc to call cobol programs. Stephane -Original Message- Jared Still Sent: Thursday, September 04, 2003 11:34 AM To: Multiple recipients of list ORACLE-L One thing you can do is bypass all of your security if you aren't careful. EXTPROC needs to run as some user other than Oracle (nobody for instance), otherwise you've just created a huge security breach. There are other security implications as well. Even running as 'nobody', you need to ensure that the code is written in a secure manner. As for why you would use them, there are probably more reasons than we can think of here. One that comes to mind is you have data that needs massaged by an algorithm in a purchased library. Rather than writing a whole app to deal with it, you write a wrapper for the purchased functionality and plug it into EXTPROC. You can even do this with Perl. Works very well. :) Jared On Thu, 2003-09-04 at 07:49, [EMAIL PROTECTED] wrote: Ive just started digging into these. Im familiar with Java and C, though Im hardly an expert. It appears that java stored procedures are much easier to use and far more forgiving than C based external procedures. So then I started looking for functionality that external procedures have over java and I cant find any. Since I cant find any, I dont see any reason to spend time learning how to use them. so my question is, are there things you can do with external procedures that you cant do with java? -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: [EMAIL PROTECTED] INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Jared Still INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Stephane Paquette INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
RE: c based external procedures vs. Java Stored Procedures
Anything stored is always easier to configure then anything external. It shouldn't be easier to use, though. And you should judge where dies it make sense. For reading a simple file 10 times a day (document scanning application at my previous company), a properly written C program (using fork, readv and writev, without fscanf and fprintf bells and whistles) will outperform almost anything else. For taking to other applications, network communication and alike, Java is not significantly slower and is much easier to program. If you want a simple database script, PL/SQL is by far the best solution. And if your goal is to make me like you, use perl. -- Mladen Gogala Oracle DBA -Original Message- [EMAIL PROTECTED] Sent: Thursday, September 04, 2003 10:49 AM To: Multiple recipients of list ORACLE-L Ive just started digging into these. Im familiar with Java and C, though Im hardly an expert. It appears that java stored procedures are much easier to use and far more forgiving than C based external procedures. So then I started looking for functionality that external procedures have over java and I cant find any. Since I cant find any, I dont see any reason to spend time learning how to use them. so my question is, are there things you can do with external procedures that you cant do with java? -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: [EMAIL PROTECTED] INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Note: This message is for the named person's use only. It may contain confidential, proprietary or legally privileged information. No confidentiality or privilege is waived or lost by any mistransmission. If you receive this message in error, please immediately delete it and all copies of it from your system, destroy any hard copies of it and notify the sender. You must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message if you are not the intended recipient. Wang Trading LLC and any of its subsidiaries each reserve the right to monitor all e-mail communications through its networks. Any views expressed in this message are those of the individual sender, except where the message states otherwise and the sender is authorized to state them to be the views of any such entity. -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Mladen Gogala INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
RE: c based external procedures vs. Java Stored Procedures
so my question is, are there things you can do with external procedures that you cant do with java? Yes there are, for instance, Java doesn't support raw socket, so if you ever need that you will have to do it in C with external procedure. But what's the chance of anyone is going to use such a thing, very little. In general though, you can do most of the stuff in Java Stored Procedures. Richard Ji -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Richard Ji INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
RE: c based external procedures vs. Java Stored Procedures
Or Perl... On Thu, 2003-09-04 at 14:54, Richard Ji wrote: so my question is, are there things you can do with external procedures that you cant do with java? Yes there are, for instance, Java doesn't support raw socket, so if you ever need that you will have to do it in C with external procedure. But what's the chance of anyone is going to use such a thing, very little. In general though, you can do most of the stuff in Java Stored Procedures. Richard Ji -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Richard Ji INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Jared Still INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
