Re: Embedded SQL Performance Issues
"Janith Wanigasekara" <[email protected]> Sat, 23 Apr 2011 11:49:25 +1200
| Newsgroups | gmane.comp.systems.as400.jbausers |
|---|---|
| Message-ID | <[email protected]> |
Hi Kevin We were looking at few DR solutions for the System i . DR solutions for a V6R1 system apparently is cost effective compared to V5R4 because of virtualization support and the fact that V6R1 partition that can host storage of another i5/OS V6R1 partition. We wouldn't mind sharing a machine with others if we can keep the cost down and achieve the same result. Thats the main reason for the upgrade and of cause the IBM software support is going to end for V5R4 at some stage I imagine. Well the upgrade was done yesterday and Im almost done with testing now. so far so good. I must admit we had great support from Infor for this exercise. Regards Janith -----Original Message----- From: system21-bounces-Zwy7GipZuJhWk0Htik3J/[email protected] [mailto:system21-bounces-Zwy7GipZuJhWk0Htik3J/[email protected]] On Behalf Of [email protected] Sent: Friday, 22 April 2011 1:43 a.m. To: System 21 Users Subject: Re: [SYSTEM21] Embedded SQL Performance Issues Hi Janith, We're on Aurora 2.4 and OS v5r4. I'm just curious what is prompting the need to move to v6r1? Thanks! Kevin Warner | Trelleborg Automotive USA, Inc. | Information Technology Manager Americas Office: 269.639.4324 | Mobile: 269.615.2133 | Email: [email protected] | Website: http://www.trelleborg.com/automotive "Janith Wanigasekara" <[email protected]> Sent by: system21-bounces-Zwy7GipZuJhWk0Htik3J/[email protected] 04/20/2011 06:02 PM Please respond to System 21 Users <system21-Zwy7GipZuJhWk0Htik3J/[email protected]> To "'System 21 Users'" <system21-Zwy7GipZuJhWk0Htik3J/[email protected]> cc Subject Re: [SYSTEM21] Embedded SQL Performance Issues Hi Everyone We are at Aurora 1.2 (Style) and about to upgrade the OS from v5r4 to v6r1 (This weekend). We use embedded SQL in lot of the programs. I would like to know if anyone using Aurora style has done the above upgrade before and come across any issues at all. Thanks in advance Janith -----Original Message----- From: system21-bounces-Zwy7GipZuJhWk0Htik3J/[email protected] [mailto:system21-bounces-Zwy7GipZuJhWk0Htik3J/[email protected]] On Behalf Of Hudson McVay Sent: Thursday, 21 April 2011 6:31 a.m. To: 'System 21 Users' Subject: Re: [SYSTEM21] Embedded SQL Performance Issues Great! Glad it worked. As for the users, you are on your own. Hudson -----Original Message----- From: system21-bounces-Zwy7GipZuJhWk0Htik3J/[email protected] [mailto:system21-bounces-Zwy7GipZuJhWk0Htik3J/[email protected]] On Behalf Of Prill, Steve Sent: Wednesday, April 20, 2011 1:50 PM To: System 21 Users Subject: Re: [SYSTEM21] Embedded SQL Performance Issues Hudson, WOW, WOW, WOW! I typed STRDBMON on an iSeries command line, prompted it (F4), and entered a file and library on the OUTFILE parameter and left the default for all of the other parameters. I then ran the program with the SQL performance problem and when it was done did ENDDBMON. I then used the RUNQRY command over the file I entered on the STRDBMON command. The query output shows the "Advised Keyed Columns" (the logicals that you need to create) in column 920 of the file. The file used can also be seen in position 455 of the query. I created the logicals suggested in the query and the program with the performance problem runs almost instantly now. I appreciate all of the help with this. You people are the best and there is always someone willing to help. Now if I could just get the users out of this "it's always been that way" mode. Any suggestions? Just kidding. Thank you------- Steve Prill | I.T. Manager | Rexair LLC |50 W. Big Beaver Rd. Suite 350 | Troy, MI 48084 | 248-816-8627 | fax 248-524-2191 | sprill-hW6zm9MTFO98UrSeD/[email protected] -----Original Message----- From: system21-bounces-Zwy7GipZuJhWk0Htik3J/[email protected] [mailto:system21-bounces-Zwy7GipZuJhWk0Htik3J/[email protected]] On Behalf Of Hudson McVay Sent: Wednesday, April 20, 2011 11:08 AM To: 'System 21 Users' Subject: Re: [SYSTEM21] Embedded SQL Performance Issues Whatever I used came with the system. Either in Navigator or STRDBMON. A google search will bring up some redbooks on performance tuning, that's a place to start. I believe in was in Navigator where it suggested what views to build. I just don't remember what I did or how I got there. You should just have to create the logicals (views) and at run time the sql optimizer will use the new view. You should notice the speed increase the next time you run payments. I did not make any changes to PL431 but I have recomplied PL431 for another different mod. Hudson -----Original Message----- From: system21-bounces-Zwy7GipZuJhWk0Htik3J/[email protected] [mailto:system21-bounces-Zwy7GipZuJhWk0Htik3J/[email protected]] On Behalf Of Randy Rasp Sent: Wednesday, April 20, 2011 10:44 AM To: System 21 Users Subject: Re: [SYSTEM21] Embedded SQL Performance Issues I am very anxious to try Hudson's suggestion. Do I just create these logicals over PLP15? Do I need to change PL431 to use the new logical? PL431 currently uses PLP15 in the declare code. Will SQL figure out that it has a better access path and start using it? Thanks everyone! On Wed, Apr 20, 2011 at 9:38 AM, Prill, Steve wrote: > Hudson, > > Are the SQL monitors already on the system? How do you use them? > > Thanks---- > > Steve Prill | I.T. Manager | Rexair LLC |50 W. Big Beaver Rd. Suite > 350 | Troy, MI 48084 | 248-816-8627 | fax 248-524-2191 | > sprill-hW6zm9MTFO98UrSeD/[email protected] > > > > -----Original Message----- > From: system21-bounces-Zwy7GipZuJhWk0Htik3J/[email protected] > [mailto:system21-bounces-Zwy7GipZuJhWk0Htik3J/[email protected]] On Behalf Of Hudson McVay > Sent: Wednesday, April 20, 2011 10:09 AM > To: 'System 21 Users' > Subject: Re: [SYSTEM21] Embedded SQL Performance Issues > > Does sound like an index problem. > I had the same issues a few years ago with 1/APY - report payments due > also, went from seconds to hours to run I used one of the sql monitors > to view what was being processed, it suggested what views to create. > Created the views and that did fixed it. > > For the 1/APY issue I created 2 views, > > R PLR15 K LOGI15 K CONO15 K SUPN15 K > CURN15 K PDUE15 K ETYP15 K LREF15 > And > > R PLR15 K LOGI15 K CONO15 K > SUPN15 K RSTS15 > Worked for me, your milage may vary. > > Hudson McVay > > > -----Original Message----- > From: system21-bounces-Zwy7GipZuJhWk0Htik3J/[email protected] > [mailto:system21-bounces-Zwy7GipZuJhWk0Htik3J/[email protected]] On Behalf Of Randy Rasp > Sent: Wednesday, April 20, 2011 9:53 AM > To: System 21 Users > Cc: SYSTEM21-Zwy7GipZuJhWk0Htik3J/[email protected] > Subject: Re: [SYSTEM21] Embedded SQL Performance Issues > > Steve - > > Did you just upgrade your operating system to V6R1 by chance? > > We never had performance problems in the past, as our AS/400s in > recent years has been oversized. > > We upgraded to V6R1 two weekends ago and I am now getting sporadic > reports of jobs that appear to be stuck. When I investigate it's > always a RPG program with embedded SQL. The jobs are running, they > are just VERY slow. > > One job in particular is 1/APY - report payments due. It used to take > only 15-20 seconds to complete, and it now takes over 45 minutes. > When this job is running, our CPU jumps to 75+ % utilization. Prior > to V6R1, our AS/400 was rarely above 10% > > When this job is running, the program stack indicates that it's called > a program in QSYS called QSQROUTE. > > I signed onto Fix Central and we have all of the latest PTFs from IBM. > > I am not sure what to do at this point. > > Randy Rasp > AER Manufacturing > > > > On Wed, Apr 20, 2011 at 7:25 AM, Prill, Steve wrote: > >> We are at 3.5.2 SP3. A user complained to me about the performance >> when the quantities were changed on a Bill of Material via menu MDM >> option >> 21 >> (Routes/Structures). This has been occurring forever but we are just >> now hearing about it. It was taking about 20 seconds to change the >> quantity on one part but when they would change two of more >> quantities then press F8 to update it could take 3 or 4 minutes to >> complete the update. I had a vendor look at the application and they >> found an issue with the embedded SQL. They found and fixed the issue >> in program DB590 and the update is now nearly instantaneous. In this >> case they had to create a new logical and modify the SQL. >> >> >> Today another user complained about the performance, that has been >> occurring forever, when using the "Routes/Structures Audit" (MDE >> option 8). After a part/route is entered and a change is selected >> via "2=Route Structure Inquiry" and enter is pressed on the next >> screen, it can take up to 5 minutes to get to the screen titled >> "Process Route Audit Inquiry >> - Inputs". The issue appears to be with various SQL statements in >> program DB561. >> >> There seems to be a pattern here and I know there are many other SQL >> programs in System 21 and I now wonder if this performance issue is >> occurring in other programs but our users have just learned to live >> with it. In the 8/MDE problem above the users have simply chosen not >> to use the option. >> >> >> Has anyone else experienced similar issues with embedded SQL and >> maybe found a fix? Unfortunately, we do not know how to troubleshoot >> embedded SQL issues. I know my vendor can look into it and fix it >> but wonder if there is a general fix for these type of issues with >> embedded SQL that my programmers can look into. >> >> >> Thanks in advance for your input. >> >> >> Steve Prill >> >> >> Steve Prill | I.T. Manager | Rexair LLC |50 W. Big Beaver Rd. Suite >> 350 >> | Troy, MI 48084 | 248-816-8627 | fax 248-524-2191 | >> sprill-hW6zm9MTFO98UrSeD/[email protected] <mailto:sprill-o28OYk0MVw58UrSeD/[email protected]> >> >> >> _______________________________________________ >> This is the System 21 Users (SYSTEM21) mailing list To post a message >> email: SYSTEM21-Zwy7GipZuJhWk0Htik3J/[email protected] To subscribe, unsubscribe, or change >> list options, >> visit: http://lists.midrange.com/mailman/listinfo/system21 >> or email: SYSTEM21-request-Zwy7GipZuJhWk0Htik3J/[email protected] Before posting, please take a >> moment to review the archives at >> http://archive.midrange.com/system21. > _______________________________________________ > This is the System 21 Users (SYSTEM21) mailing list To post a message > email: SYSTEM21-Zwy7GipZuJhWk0Htik3J/[email protected] To subscribe, unsubscribe, or change list > options, > visit: http://lists.midrange.com/mailman/listinfo/system21 > or email: SYSTEM21-request-Zwy7GipZuJhWk0Htik3J/[email protected] Before posting, please take a > moment to review the archives at http://archive.midrange.com/system21. > > > _______________________________________________ > This is the System 21 Users (SYSTEM21) mailing list To post a message > email: SYSTEM21-Zwy7GipZuJhWk0Htik3J/[email protected] To subscribe, unsubscribe, or change list > options, > visit: http://lists.midrange.com/mailman/listinfo/system21 > or email: SYSTEM21-request-Zwy7GipZuJhWk0Htik3J/[email protected] Before posting, please take a > moment to review the archives at http://archive.midrange.com/system21. > > _______________________________________________ > This is the System 21 Users (SYSTEM21) mailing list To post a message > email: SYSTEM21-Zwy7GipZuJhWk0Htik3J/[email protected] To subscribe, unsubscribe, or change list > options, > visit: http://lists.midrange.com/mailman/listinfo/system21 > or email: SYSTEM21-request-Zwy7GipZuJhWk0Htik3J/[email protected] Before posting, please take a > moment to review the archives at http://archive.midrange.com/system21. _______________________________________________ This is the System 21 Users (SYSTEM21) mailing list To post a message email: SYSTEM21-Zwy7GipZuJhWk0Htik3J/[email protected] To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/system21 or email: SYSTEM21-request-Zwy7GipZuJhWk0Htik3J/[email protected] Before posting, please take a moment to review the archives at http://archive.midrange.com/system21. _______________________________________________ This is the System 21 Users (SYSTEM21) mailing list To post a message email: SYSTEM21-Zwy7GipZuJhWk0Htik3J/[email protected] To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/system21 or email: SYSTEM21-request-Zwy7GipZuJhWk0Htik3J/[email protected] Before posting, please take a moment to review the archives at http://archive.midrange.com/system21. _______________________________________________ This is the System 21 Users (SYSTEM21) mailing list To post a message email: SYSTEM21-Zwy7GipZuJhWk0Htik3J/[email protected] To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/system21 or email: SYSTEM21-request-Zwy7GipZuJhWk0Htik3J/[email protected] Before posting, please take a moment to review the archives at http://archive.midrange.com/system21. _______________________________________________ This is the System 21 Users (SYSTEM21) mailing list To post a message email: SYSTEM21-Zwy7GipZuJhWk0Htik3J/[email protected] To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/system21 or email: SYSTEM21-request-Zwy7GipZuJhWk0Htik3J/[email protected] Before posting, please take a moment to review the archives at http://archive.midrange.com/system21. <p style="font-size:10px;"> We are committed to protecting the privacy of the personal information you may provide to us by ensuring your e-mail address and any other personal information about you will only be disclosed to relevant staff and contractors and used for the purpose of responding to a request or to carry out instructions. 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