Hello Dough, First and foremost I am glad that I got the reply from the Dough Mueller himself I shall keep this mail 😊😊.
Second I have explained the same to the customer and waiting for their response. Many thanks for your time and detailed explanation, I really appreciate that. Sent from my iPhone Regards, Abhishek Chaturvedi. > On 30-Nov-2016, at 1:12 AM, Mueller, Doug <[email protected]> wrote: > > Abhishek, > > Our strong suggestion would be to not use the approach you are using for the > CMDB. It leads to inconsistent data and a lack of integrity. What you are > describing is just that the last person to write something into the CMDB -- > regardless of quality of the source -- is the winner and their data is the > one that should be recorded and shown -- and their ID put into the source > field. > > What is you have multiple sources but they don't get all attributes so that > the full CI is loaded from multiple sources, some having 1/2 the attributes > and others having the other 1/2? Who is the source now? There are two or > more sources... And, you have to be careful to only update the right fields > from each source. > > What if you have a source that is more reliable than another source? But, > the less reliable source writes last? Should it's updates win? > > NOT A RECOMMENDED STATEGY -- but answering the question (see below for > > Although it is strongly NOT RECOMMENDED that you perform the work and use the > CMDB in this way, you can accomplish what you asked simply.... You just have > one dataset. It is the production dataset. You write to it and you read > from it. You don't use Normalization. You don't use Reconciliation. You > just have everyone write to it and last write wins. Now, the last modified > has the data you want. And the CMDB works in the way you have described you > desire. > > Again, this IS NOT a good strategy for managing the CMDB. > > > > What you really need is a different data set for each source. Your sources > load data into their datasets. You then reconcile WITH PRECEDENCE all values > from those sources into production. It doesn't matter who last updates as > their data may or may not have even been the data that is promoted into > production. What you have in production is THE BEST data from all the > sources merged ready to go. > > This is the best practice. > > If you did need to know what source was updated when, you can always look at > the source datasets (items linked by reconciliation ID) to see who loaded > most recently. You could even have a button on the screen that goes out and > looks up dates on all the items to see who updated most recently. > > > > But, now you run into more trouble.... What if the object has not changed. > Best practice is that you don't reload the CMDB with data that is not > changed. Or, you just drive the system wild constantly reprocessing data > that is not changed into the same target data. So, if your source doesn't > reload as the data has not changed, then you end up with only the source with > who knows if it is accurate data that does think there is a change updating > so that would then win over data that is from a source where there was no > change detected. > > You solve this only by reloading all data every day -- but then you have a > timing issue based on whether data source A loaded item Q first or data > source B. They were both updated, but which one first and then the problem > just keeps growing...... > > Some things to think about. The overall issue here is much more involved > with many more details and decisions than it first seems..... > > Doug Mueller > > -----Original Message----- > From: Action Request System discussion list(ARSList) > [mailto:[email protected]] On Behalf Of Abhishek Chaturvedi > Sent: Thursday, November 24, 2016 10:51 PM > To: [email protected] > Subject: Modification Source of CI > > Hi Team, > > I have multiple data sources in my environment and I want to capture the the > source which is modifying a CI to be captured in OOB design the Last Modified > field is Remedy App Service. Customer don't want to use > getattributesourcelist field. > > For Example if I have a CI C which is modified by multiple datsources D1 D2 > D3 i wish to capture latest source in a field any ideas ?? > > Sent from my iPhone > > _______________________________________________________________________________ > UNSUBSCRIBE or access ARSlist Archives at www.arslist.org "Where the Answers > Are, and have been for 20 years" > > _______________________________________________________________________________ > UNSUBSCRIBE or access ARSlist Archives at www.arslist.org > "Where the Answers Are, and have been for 20 years" _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org "Where the Answers Are, and have been for 20 years"
