[U2] unidata index
Stupid index question: does indexing a field help performance when sorting BY that field but it's not otherwise involved in the query? -- Jeffrey Butera, PhD Associate Director for Applications and Web Services Information Technology Hampshire College 413-559-5556 http://www.hampshire.edu http://www.facebook.com/hampshirecollegeit ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
Re: [U2] unidata index
Don't know - I wouldn't index a field for that reason alone. And it probably wouldn't help if you had other fields you were sorting by, or other fields you were selecting, in the same select statement. -Original Message- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Jeffrey Butera Sent: Thursday, March 13, 2014 2:15 PM To: U2 Users List Subject: [U2] unidata index Stupid index question: does indexing a field help performance when sorting BY that field but it's not otherwise involved in the query? -- Jeffrey Butera, PhD Associate Director for Applications and Web Services Information Technology Hampshire College 413-559-5556 http://www.hampshire.edu http://www.facebook.com/hampshirecollegeit ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users Dave Davis Team Lead, Research Development P: 614-875-4910 x108 F: 614-875-4088 E: dda...@harriscomputer.com [http://www.harriscomputer.com/images/signatures/HarrisSchools.jpg] [http://www.harriscomputer.com/images/signatures/DivisionofHarris.gif]http://www.harriscomputer.com/ 6110 Enterprise Parkway Grove City, OH 43123 www.harris-schoolsolutions.comhttp://www.harris-schoolsolutions.com This message is intended exclusively for the individual or entity to which it is addressed. This communication may contain information that is proprietary, privileged or confidential or otherwise legally exempt from disclosure. If you are not the named addressee, you are not authorized to read, print, retain, copy or disseminate this message or any part of it. If you have received this message in error, please notify the sender immediately by e-mail and delete all copies of the message. ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
Re: [U2] unidata index
I do not believe so. I believe an index is only used during the SELECT statement and then only when the indexed field is the only field in the select criteria. So, if practical, use the indexed field in the first selection of the file, then all records will be in sorted order of the indexed field. Then narrow that list down by other, non-indexed fields. Sincerely, David Laansma Hubbard Supply Co. Direct: 810-342-7143 Office: 810-234-8681 Fax: 810-234-6142 www.hubbardsupply.com Delivering Products, Services and Innovative Solutions -Original Message- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Dave Davis Sent: Thursday, March 13, 2014 2:19 PM To: U2 Users List Subject: Re: [U2] unidata index Don't know - I wouldn't index a field for that reason alone. And it probably wouldn't help if you had other fields you were sorting by, or other fields you were selecting, in the same select statement. -Original Message- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Jeffrey Butera Sent: Thursday, March 13, 2014 2:15 PM To: U2 Users List Subject: [U2] unidata index Stupid index question: does indexing a field help performance when sorting BY that field but it's not otherwise involved in the query? -- Jeffrey Butera, PhD Associate Director for Applications and Web Services Information Technology Hampshire College 413-559-5556 http://www.hampshire.edu http://www.facebook.com/hampshirecollegeit ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users Dave Davis Team Lead, Research Development P: 614-875-4910 x108 F: 614-875-4088 E: dda...@harriscomputer.com [http://www.harriscomputer.com/images/signatures/HarrisSchools.jpg] [http://www.harriscomputer.com/images/signatures/DivisionofHarris.gif]http://www.harriscomputer.com/ 6110 Enterprise Parkway Grove City, OH 43123 www.harris-schoolsolutions.comhttp://www.harris-schoolsolutions.com This message is intended exclusively for the individual or entity to which it is addressed. This communication may contain information that is proprietary, privileged or confidential or otherwise legally exempt from disclosure. If you are not the named addressee, you are not authorized to read, print, retain, copy or disseminate this message or any part of it. If you have received this message in error, please notify the sender immediately by e-mail and delete all copies of the message. ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
Re: [U2] unidata index
Jeffrey, In Unidata, I think so. In Universe the answer is yes. Actually this is one of the two benefits, the other is selecting a set of ids for a given index value. For example, if you have a CUSTOMER file with the ZIP (postal) code indexed then this statement will give you all of your customers sorted by ZIP code and @ID: SELECT CUSTOMER BY ZIP and it will be quick. Don On Thursday, March 13, 2014 2:26 PM, Dave Laansma dlaan...@hubbardsupply.com wrote: I do not believe so. I believe an index is only used during the SELECT statement and then only when the indexed field is the only field in the select criteria. So, if practical, use the indexed field in the first selection of the file, then all records will be in sorted order of the indexed field. Then narrow that list down by other, non-indexed fields. Sincerely, David Laansma Hubbard Supply Co. Direct: 810-342-7143 Office: 810-234-8681 Fax: 810-234-6142 www.hubbardsupply.com Delivering Products, Services and Innovative Solutions -Original Message- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Dave Davis Sent: Thursday, March 13, 2014 2:19 PM To: U2 Users List Subject: Re: [U2] unidata index Don't know - I wouldn't index a field for that reason alone. And it probably wouldn't help if you had other fields you were sorting by, or other fields you were selecting, in the same select statement. -Original Message- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Jeffrey Butera Sent: Thursday, March 13, 2014 2:15 PM To: U2 Users List Subject: [U2] unidata index Stupid index question: does indexing a field help performance when sorting BY that field but it's not otherwise involved in the query? -- Jeffrey Butera, PhD Associate Director for Applications and Web Services Information Technology Hampshire College 413-559-5556 http://www.hampshire.edu http://www.facebook.com/hampshirecollegeit ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users Dave Davis Team Lead, Research Development P: 614-875-4910 x108 F: 614-875-4088 E: dda...@harriscomputer.com [http://www.harriscomputer.com/images/signatures/HarrisSchools.jpg] [http://www.harriscomputer.com/images/signatures/DivisionofHarris.gif]http://www.harriscomputer.com/ 6110 Enterprise Parkway Grove City, OH 43123 www.harris-schoolsolutions.comhttp://www.harris-schoolsolutions.com This message is intended exclusively for the individual or entity to which it is addressed. This communication may contain information that is proprietary, privileged or confidential or otherwise legally exempt from disclosure. If you are not the named addressee, you are not authorized to read, print, retain, copy or disseminate this message or any part of it. If you have received this message in error, please notify the sender immediately by e-mail and delete all copies of the message. ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
[U2] jobnotify: Error 913 occurred
We have recently upgraded Universe (10.2.4 to 11.1.15) and are now finding some unusual activity around phantom jobs and the documented change to NOTIFY ON. There are a lot of details behind the scenes but in summary: - started a job via phantom command (phantom SYNC.COPY.BNET) - noticed 90 mins later that this job had crashed. This crash happens for various reasons but is more frequently crashing since the upgrade - restarted the same job with the same phantom command At this time the following 3 lines of text was returned to the user's session: jobnotify: Error 913 occurred [15466830] SYNC.COPY.BNET - terminated Phantom process started with process ID 33161456 Seems the 1ST 2 lines of text related to the previous phantom and 3rd line related to the phantom just started. My Q is: Does anyone have any ideas about the specific message jobnotify: Error 913 occurred We are running on AIX. Regards, Brendon Leverett ** This email message and any files transmitted with it may be confidential and privileged neither of which is intended to be waived. If you have received this communication in error, please reply to this e-mail to notify the sender of its incorrect delivery and then delete it and your reply. It is your responsibility to check this email and any attachments for viruses and defects before opening or sending them on. Spotless collects information about you to provide and market our services. For information about use, disclosure and access, see our privacy policy at http://www.spotless.com.au Please consider our environment before printing this email. ** ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
Re: [U2] unidata index
Only if the field is the only sort field. Groete, Regards, Christo van Rooyen GT - Systems Analyst / Designer II - Nedbank Limited Mobile: 082 925 6301 Office: 012 436 7264 Location: MenLyn Maine - 3'rd Floor - Desk 292 -Original Message- From: Jeffrey Butera [mailto:jbut...@hampshire.edu] Sent: 13 March 2014 08:15 PM To: U2 Users List Subject: [U2] unidata index Stupid index question: does indexing a field help performance when sorting BY that field but it's not otherwise involved in the query? -- Jeffrey Butera, PhD Associate Director for Applications and Web Services Information Technology Hampshire College 413-559-5556 http://www.hampshire.edu http://www.facebook.com/hampshirecollegeit Nedbank Limited Reg No 1951/09/06. The following link displays the names of the Nedbank Board of Directors and Company Secretary. [ http://www.nedbank.co.za/terms/DirectorsNedbank.htm ] This email is confidential and is intended for the addressee only. The following link will take you to Nedbank's legal notice. [ http://www.nedbank.co.za/terms/EmailDisclaimer.htm ] ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
