Best Practice With Work Efficient in Report server

In SSAS cube I have two different roles:
- Manager (about 10 people)
- Salesman (about 43 people)
Manager has full access to 4 report and salesman has access to 1 report. Totally, it is five report.
I have the roles and its users in SSAS cube and when I deploy the cube I need to apply all 53 users in the report server.
I have created two map, named "aa" and "bb" in the index page. The manager has access to "aa" and salesman has acess to "bb". I have moved the document to these map.
What is the best practice to make right user to have right access to map and document in a efficient approach in report server?

Hi Sakura,
In SQL Server Reporting Services, we should verify that sufficient permissions have been granted for the user. At a minimum, we should grant the user the role that support both the "View reports" task and the "View folders" tasks to support viewing and folder
navigation in SQL Server Management Studio. For more information about system-level permission and item-level permission, please refer to the following document:
http://technet.microsoft.com/en-us/library/aa337491(v=sql.105).aspx
Hope this helps.
Thanks,
Katherine Xiong
Katherine Xiong
TechNet Community Support

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IPhone Best Practices - A Work In Progress

Hello all. I've been tasked with introducing my coworkers into the inner workings of the iPhone, and there are a good number of pointers that I find myself saying over and over again. I'd like to share my best practices with everyone, as well as collect more pointers and opinions from the community at large.
Care and Handling:
First - wash your hands, often. Now I know we all do this often anyway, but I'd like to point out that a healthy amount of hand washing will really go a long way to keep your iPhone screen smudge free. The worst offender, unfortunately, is doughnuts. A small layer of sugar will render that area un-tappable, without any real indication that it has done so. If you are frantically tapping the screen on the iPod button and nothing is happening, clean your phone before you do a hard reset.
Second - Pockets. Keeping your phone in your front pocket is natural and what most of us do. In these summer months, however, keeping your phone in a sweaty front pocket can do a good deal to the dirt level of the screen. If you find yourself cleaning your phone constantly, try a belt clip.
Lastly - Battery Life. Your iPhone's battery life is in your hands, literally. Being aware of your power consumption and planning accordingly is going to be infinitely more important that the battery's native charge-holding ability. This goes especially for the day of purchase - as tempting as it may be to open the box and activate, immediately running around the house watching YouTube, it is best to let the phone charge for 12 hours before use. Charging the phone every night is an absolute must, skipping a day will kill the battery life as your ride the bottom edge the following day. Most of us have access to a USB port while we're at work, best idea will be to plug in your phone when you sit down at your desk.
iPod:
Large Libraries: In the opening weekend, I got many complaints that you cannot manually manage your music. There is a workaround that has made me change the way I work with all of my iPods: the iPhone specific playlist. Simply create a playlist with all of the music you wish to put on your phone and sync that one playlist. This also helps with sync time - you have a start sync and an end sync, not a constant sync all throughout your music management, slowing your computer down in the process.
TV Shows: I watch a lot of MST3K, which I have organized into iTunes as TV shows, split into seasons, the works. The problem that has arisen, therefore, is the one of selective synchronization - you cannot specifically select the TV show you want to sync to the device, instead getting the choices to sync all, unwatched, or latest shows. This is problematic when each show is 700MB large. Here's the work around - select all of the episodes of a specific show and right click, selecting "Mark as Not New", removing all of the little blue dots from the episodes. Select the one, three, or five episodes, and right click them, selecting "Mark as New", then sync the last one, three, or five unwatched episodes. The shows you selected will sync.
iPhoto:
Many users are complaining that iPhoto opens whenever the phone is connected. This is not a preference of the phone, but rather iPhoto. Remember when you first launched iPhoto and it asked you if you wanted to use iPhoto whenever your camera was attached? iPhoto is detecting that your phone is a camera and launching, just as you told it to do.
Mail:
POP accounts - too many unread messages: When first adding a POP account, all of the messages downloaded to the phone arrive as unread. Tapping a message, tapping back, and then tapping the next message can get tedious. Here's the workaround - tap the small down arrow to the upper right hand side of the screen, watching closely to the number next to Inbox. When that number goes down by one, tap the arrow again. If that number hasn't gone down yet, wait a sec, and do not try to tap tap tap tap tap, you'll flood the input queue and crash Mail.
Syncing Mail accounts - All too often people blame the iPhone when their mail does not work. A perfect test is sync you accounts from Mail. If they work in mail, they'll work on the phone, if they are unreliable in Mail, they will also be unreliable on the phone. The Mail client on the iPhone is just as powerful as any other mail client in terms of how it connects to mail servers, if you are having problems you need to check your settings before blaming the hardware. If you prefer to leave your install of Mail.app alone, create a new user account on your Mac, set up all of the accounts you want there, and use iTunes to sync that data to the phone. Make sure to remove that portion of sync from your actual user account's instance of iTunes, however, or it will all sync back.
This message has not been downloaded from the server: This message has snagged a couple users, but upon investigation, these users have filled their iPhones to the absolute brim with music and video. It hasn't been downloaded from the server because there is no space to download to - this also applies to the Camera application dumping to the Home screen. Because there is no space, it can't add any new data. Make some room, then be patient as the mail client gets to that message in cleanup (often a sync or reboot will clear it up).
Safari:
Safari and iPod: Many users have reported iPod stopping in the middle of browsing, often pouting and pursing their lips crying, "This is terrible, I can't even browse the web and listen to music at the same time?". I then check their phone, and lo and behold they have upwards of eight separate pages open at the same time. This device (like every other computer out there) has a finite amount of memory, each page taking up a significant portion depending on how busy the page is. I've routinely gotten through entire albums while browsing through Safari, but I've got one page open in total, and it's usually mostly text. Keep it to one or two pages open and iPod will run forever if you let it.
Web Apps: "This web app is terrible, it keeps booting me to Home!" When was your last reboot? How many other pages are open? In the same vein as Safari and iPod, Web Apps need a good deal of breathing room - give it to them. Close down other pages, stop iPod, or even reboot. Give the app a clean slate and it will perform, every time. iPhoneRemote users will attest to this.
iCal:
Multiple Calendars - Default Calendar: When adding a new appointment, it adds to the default calendar. Appointments can't be shunted to the correct calendar until after sync anyway, so create an "iPhone" calendar and make that the default. Because it's in that calendar, you'll know enough to move it to the appropriate calendar after sync.
Please feel free to add your own best practices, and ask questions, too.

is there any application you can get for the iphone to enlarge text and phone numbers ?
If included with an email or on a website, yes with no application needed.
If you are referring to the text size for your iPhone's contact list, no.
can you insert a phone number from your contact list into a text message ?
No.
i cant seem to figure it out, does the alarm clock work if you turn off the phone at night,
No - powered off with the iPhone means powered off. Any phone that provides for this is not powered off - it is in deep sleep or deep standby mode, which the iPhone does not support. If you don't want your phone ringing or don't want to receive SMS at night but you want to use the iPhone's alarm feature as a wake-up alarm, you can turn on Airplane Mode before going to bed, which will also conserve the battery if your iPhone is not plugged in at night.
can you send a multi media text message ?
No.

Best practice to share user defined reports?

What is the best practice to share user defined reports among team members?
Currently I can create a folder under the Reports/User Defined Reports system folder and any reports or subfolders under that can be exported into xml by right-clicking on the folder and selecting 'Save As'. Then sending the file over or put it on a shared point or check in to SVN, then the other team members can right click on the User Defined Reports system folder and chose "Open report..." and select the xml file.
Is there any more elegant way?
Is it a good idea to share the C:\Users\lgal\AppData\Roaming\SQL Developer\UserReports.xml on Windows, or ~/.sqldeveloper/UserReports.xml (on Linux) among users?
Is there a standard way to bring this under standard SVN control in SD?

I think the best thing would be if someone set up a config sharing site!
It would be very easy to do on system like drupal or e107. People could register and submit their configs to different download sections based on what sort of configs they are. My site runs e107 so it's not hard to see how easy it would be
It would be easy to set up - I could do it in about 30mins but I think I have done more than enough of that! There seems no need to officialize it to any degree and burden the server even more.
I guess user-cb could host it couldn't? If you restrict people to posting only small config files with no icons and link to big stuff offsite it should be tiny bandwidth usage.
That's what I would do anyway

Best Practice For Working on Composite In Team

Hello,
I would like to know what is the best practice for working on a single composite by mutiple members in a team.
We have a core services module wherein a single composite contains many services. So, to complete in time, we would like many members to work on it simultaneously.
In such scenarios, if some one adds a new adapter or some other services, composite.xml changes.
Saving it would override other member's changes. Also, it is not possible to apply lock simultaneously on the same file through some version control mechanism.
Please let us know what should be the best practice in such scenarios.
Thanks-
Ashish

You can very well use a version control software with JDev. You may refer -
http://www.oracle.com/technetwork/articles/soa/jimerson-config-soa-355383.html
I think without version control mechanism (like subversion) it won't be easy to work in a multi-developer environment. If you really don't have a source and version control mechanism then manual merging will be required which may be error prone and time & effort consuming.
Regards,
Anuj

Is there a best practice for deleting a published report?

Post Author: matthewh
CA Forum: General
Is there a best practice for deleting a published report from C:\Program Files\Business Objects\BusinessObjects Enterprise 11.5\FileStore on Crystal Reports Server or can I just delete the subfolders? Does it reference them elsewhere? I have a load of old reports I need to shed, but can't see how to do it.

Hi,
You can refer the SRND guide. As per document (page -292)
you can configured -You can add a maximum of 50 agents per team.
http://www.cisco.com/en/US/docs/voice_ip_comm/cust_contact/contact_center/ipcc_enterprise/ippcenterprise9_0_1/design/guide/UCCE_BK_S06086EC_00_srnd-9-0-1.pdf
Also you can check the Bill of Material document of UCCE , under the section "Operating Conditions, Unified ICM, Unified CC" What are the number should configure in UCCE.

Info on best practices to add jar references in server.xml

Hi
I want to add some jar references (pcl.jar & struts.jar) in server.xml.
Can someone let me know if this can be added to <shared-library name="global.tag.libraries" version="1.0" library-compatible="true"> ?
What is the best practice to add such entries in server.xml?
Thanks
Badri

If you want to use it in BPEL it should be placed in oracle.bpel.common
cheers
James

IPS Tech Tips: IPS Best Practices with Cisco Remote Management Services

Hi Folks -
Another IPS Tech Tip coming up and this time we will be hearing from some past and current Cisco Remote Services members on their best practice suggestions. As always these are about 30 minutes of content and then Q&A - a low cost high reward event.
Hope to see you there.
-Robert
Cisco invites you to attend a 30-45 minute Web seminar on IPS Best   Practices delivered via WebEx. This event requires registration.
Topic: Cisco IPS Tech Tips - IPS Best Practices with Cisco Remote Management   Services
Host: Robert Albach
Date and Time:
Wednesday, October 10, 2012 10:00 am, Central Daylight Time (Chicago,   GMT-05:00)
To register for the online event
1. Go to https://cisco.webex.com/ciscosales/onstage/g.php?d=203590900&t=a&EA=ralbach%40cisco.com&ET=28f4bc362d7a05aac60acf105143e2bb&ETR=fdb3148ab8c8762602ea8ded5f2e6300&RT=MiM3&p
2. Click "Register".
3. On the registration form, enter your information and then click   "Submit".
Once the host approves your registration, you will receive a confirmation   email message with instructions on how to join the event.
For assistance
http://www.webex.com
IMPORTANT NOTICE: This WebEx service includes a feature that allows audio and   any documents and other materials exchanged or viewed during the session to   be recorded. By joining this session, you automatically consent to such   recordings. If you do not consent to the recording, discuss your concerns   with the meeting host prior to the start of the recording or do not join the   session. Please note that any such recordings may be subject to discovery in   the event of litigation. If you wish to be excluded from these invitations   then please let me know!

Hi Marvin, thanks for the quick reply.
It appears that we don't have Anyconnect Essentials.
Licensed features for this platform:
Maximum Physical Interfaces       : Unlimited      perpetual
Maximum VLANs                     : 100            perpetual
Inside Hosts                      : Unlimited      perpetual
Failover                          : Active/Active perpetual
VPN-DES                           : Enabled        perpetual
VPN-3DES-AES                      : Enabled        perpetual
Security Contexts                 : 2              perpetual
GTP/GPRS                          : Disabled       perpetual
AnyConnect Premium Peers          : 2              perpetual
AnyConnect Essentials             : Disabled       perpetual
Other VPN Peers                   : 250            perpetual
Total VPN Peers                   : 250            perpetual
Shared License                    : Disabled       perpetual
AnyConnect for Mobile             : Disabled       perpetual
AnyConnect for Cisco VPN Phone    : Disabled       perpetual
Advanced Endpoint Assessment      : Disabled       perpetual
UC Phone Proxy Sessions           : 2              perpetual
Total UC Proxy Sessions           : 2              perpetual
Botnet Traffic Filter             : Disabled       perpetual
Intercompany Media Engine         : Disabled       perpetual
This platform has an ASA 5510 Security Plus license.
So then what does this mean for us VPN-wise? Is there any way we can set up multiple VPNs with this license?

What are some best practices to work with Compressor 3 droplets and new Compressor 4?

I have purchased Final Cut Pro X / Motion 5 and Compressor 4 from the App Store. My installation of Final Cut Studio 6.0.6 / Motion 3.0.2 / Compressor 3.0.5 has been moved to a new folder "Final Cut Studio". I have started the old version of Motion first as advised in this document.
I just tried to use my old Compressor 3 droplets and i am able to convert as before.
I am wondering what I should do now and what the best practices are
Use the old droplets and stick with Compressor 3?
Import the droplets to a new location to be able to use them in Compressor 4?
Recreate new droplets with similar settings within Compressor 4?
What are the changes I can expect from using Compressor 4?

I've found that it helps to meet with each person in your new org that you'll be supporting. Start with the Eloqua Admin(s) and ask for an overview of standard reports, naming conventions, folder structure, processes, etc. Make sure to do the same with sales operations, too. If you're moving into an admin role ask for the data dictionary so you can study it to understand how the data maps from front end CMS to MAP to CRM.
The next phase would be to meet with field marketing and campaign managers. Ask them about current projects, future projects and how you'll support their success with Eloqua.
And last but certainly not least - process documentation! Ask for all of those things and you'll be rocking and rolling in no time.
Good luck in your new role!

Best practice to work with Sybase 12.5.3 database version

Hi all,
Is there any document or information about best practices to access a Sybase 12.3 version from universe on BOXIR2?
Thanks.

Hi Marlon,
Have a look to Product Guide of BOXIR2 for [Data access|http://help.sap.com/businessobject/product_guides/boexir2/en/xir2_data_access_guide_en.pdf] see if it helps.:
Regards,
Shweta

What is best practice in FR ? Original Report access to Users or Snapshot

Hi,
can any one pls. let me know on what is the best practice in FR ? I need to give access to original reports to my users or the snapshot access only ? Users are not happy with snapshot access mainly during the closing time. What are the complications if i give access to original reports ? I'm using Batch scheduler, but users are unable to see the data some times. What will be the reason for this ?
Thanks,
PVR

Hi,
There are certainly many variables to have a look at. Server sizes is one concern, report size is another. Giving access to original reports is fine as long as concurrency and heavy usage don't take the servers down. That said, the reports that will be given access to their originals shouldn't run for 10 minutes for each query. Having 10 user connected to such reports will probably take reporting services down which makes the entire system useless. These types of reports should better be scheduled and shown as snapshots. However, some of these reports might have time-dependent information which needs to be refreshed at query time. In this case you could either give the access to original reports or schedule the reports to run say every 2 hours.
Cheers,
Alp

Best Practice(s) for Laptop in Field, Server at Home? (Lightroom 3.3)

Hi all!
I just downloaded the 30-day evaluation of Lightroom, now trying to get up to speed. My first task is to get a handle on where the files (photos, catalogs, etc.) should go, and how to manage archiving and backups.
I found a three-year-old thread titled "Best Practice for Laptop in Field, Server at Home" and that describes my situation, but since that thread is three years old, I thought I should ask again for Lightroom 3.3.
I tend to travel with my laptop, and I'd like to be able to import and adjust photos on the road. But when I get back home, I'd like to be able to move selected photos (or potentially all of them, including whatever adjustments I've made) over to the server on my home network.
I gather I can't keep a catalog on the server, so I gather I'll need two Lightroom catalogs on the laptop: one for pictures that I import to the laptop, and another for pictures on the home server -- is that right so far?
If so, what's the best procedure for moving some/all photos from the "on the laptop catalog" to the "on the server catalog" -- obviously, such that I maintain adjustments?
Thanks kindly! -Scott

Hi TurnstyleNYC,
Yes, I think we have the same set-up.
I only need 1 LR-catalog, and that is on the laptop.
It points to the images wherever they are stored: initially on the laptop, later on I move some of them (once I am am fairly done with developing) within LR per drag&drop onto the network storage. Then the catalog on the laptop always knows they are there.
I can still continue to work on the images on the network storage (slightly slower than on laptop's hard drive) if I still wish to.
While travelling, I can also work on metadata / keywording, although without access to my home network the images themselves are offline for develop work.
2 separate catalogs would be very inconvenient, as I would always have to remember if I have some images already moved. No collections would be possible of images including some on the laptop, some on the network.
Remember: a LR catalog is just a database with entries about images and the pointer to their storage location.
You can open only 1 DB of this sort at a time.
There is no technical reason for limiting a LR-catalog - I have read of people with several hundert thousand images within one.
The only really ever growing part on my laptop with this setup is the previews folder "<catalog name> Previews.lrdata". I render standard previews so that I can do most of the work for offline-images while travelling.
The catalog itsself "<catalog name>.lrcat" grows much slower. It is now 630 MB for 60'000+ images, whereas previews folder is 64 GB.
So yes, I dedicate quite a junk of my laptop hard disk to that. I could define "standard"-previews somewhat smaller, fitting to the laptop's screen resolution, but then when working at home with a bigger external monitor LR would load all the time for the delta size, which is why I have defined standard-preview-size for my external monitor. It may turn out to be the weakness of my setup long-term.
That is all what is needed in terms of Lightroom setup.
What you need additionally to cover potential failure of drives is no matter of LR, but *usual common backup sense* along the question "what can be recreated after failure, if so by what effort?" Therefore I do not backup the previews, but very thoroughly the images themselves as well as the catalog/catalog backups, and for convenience my LR presets.
Message was edited by: Cornelia-I: sorry, initially I had written "1:1-previews", but "standard previews" is correct.

BEST PRACTICE FOR THE REPLACEMENT OF REPORTS CLUSTER

Hi,
i've read the noter reports_gueide_to_changed_functionality on OTN.
On Page 5 ist stated that reports cluster is deprecated.
Snippet:
Oracle Application Server High Availability provides the industrys most
reliable, resilient, and fault-tolerant application server platform. Oracle
Reports integration with OracleAS High Availability makes sure that your
enterprise-reporting environment is extremely reliable and fault-tolerant.
Since using OracleAS High Availability provides a centralized clustering
mechanism and several cutting-edge features, Oracle Reports clustering is now
deprecated.
Please can anyone tell me, what is the best practice to replace reports cluster.
It's really annoying that the clustering technology is changing in every version of reports!!!
martin

hello,
in reality, reports server "clusters" was more a load balancing solution that a clustering (no shared queue or cache). since it is desirable to have one load-balancing/HA approach for the application server, reports server clustering is deprecated in 10gR2.
we understand that this frequent change can cause some level of frustration, but it is our strong believe that unifying the HA "attack plan" for all of the app server components will utimatly benefit custoemrs in simpifying their topologies.
the current best practice is to deploy LBRs (load-balancing routers) with sticky-routing capabilites to distribute requests across middletier nodes in an app-server cluster.
several custoemrs in high-end environments have already used this kind of configuration to ensure optimal HA for their system.
thanks,
philipp

Best Practice with States and lots of code lines

Hi.
This is my first application in flex.
I'm ok with as3.
Now, in as3 we were 'forced' to work mostly with external classes so hardly we have a unique code page with lots of lines.
In flex, using States leads to build codes with lots of line IF we think on states as web site pages.
I'm not sure it I understand it right. You mean: if an user visits a website built with 10 pages, but the users access only 2 pages, all that 8 remaining pages would have to be download to the swf the user loads? (this is, considering the usage os states as pages)
I'm building a system where the user logs to use it.
2 states at now: login page and home page.
I access the db, and get the user and password with this event dispatched from the db.result (this works, however i found it too-old-style looping. Is there a better way, of course, which?)
protected function usersService_resultHandler(event:ResultEvent):void
                allUsers = event.result as ArrayCollection;
                for (var i:uint;i<allUsers.length;i++){
                    if(allUsers[i].user == tx_user.text && allUsers[i].password == tx_password.text)
                        currentState = "home";
                    else
                        Alert.show("Fault", "Login");
While I have start to build the "home" page/state, I realized that my code would dramatcally increase. Is it the best practice? Do I have to call another url after login (to open a Session - please, some Session tutorials in flex)? Or I keep doing all in states? I'm afraid my swf would grow bigger.
Thanks

Ok.
The problem is that I'm not used to PHP, and I have generated the code to deal with the server automatically via Flex.
However I could add a new function, and I could guess how to catch values in the db to compare.
its a frankenstein function, but i'm afraid it also works. By now, there is no way to know whether user mistyped password or username.
public function getUserVerification($user, $pass) {
        $stmt = mysqli_prepare($this->connection, "SELECT user, password FROM $this->tablename where user=? AND password=?");
        $this->throwExceptionOnError();
        mysqli_stmt_bind_param($stmt, 'ss', $user, $pass);
        $this->throwExceptionOnError();
        mysqli_stmt_execute($stmt);
        $this->throwExceptionOnError();
        mysqli_stmt_bind_result($stmt, $row->user, $row->password);
        if(mysqli_stmt_fetch($stmt)) {
          return 1;
        } else {
          return 0;
Also I had to update the _Super_UsersService.as Class flex had generated before when I first created a php code to deal with db.
Finaly, I had to assign return and input types for the new function I've created.
Amazing... it works.
Now, when pressing the submit button on the login, flex sends user and password so php compare them instead looping it in a Array.
Also, I have made all this code inside a "loginView" component. So my main app is clean again.
I guess I understand the idea of using components and reusing them as many as possible. I just have to get used to how to access a component value from outside and vice-versa.
Now, the creationPolicy is something I would look for. This might be interesting.
Thanks a lot.
Btp~

_msdcs subdomain best practice with NS records?

I have the _msdcs subfolder under my domain (the grey folder). example below
It has only one DC inside of it for a NS server. This DC is old and no longer exists. I checked my test environment and it has the same scenario (an old DC that does that not exist). example below
I'm just wondering:
1) Is this normal, should this folder update itself with other servers?
2) should I be adding one of my other DC's? and removing the original?
I have a single forest, single domain setup 2008 functional level. My normal
_msdcs Zone does behave as expected and removes and add the appropriate records. Thanks.

I apologize for the late response. I see you've gone further than what I've recommended.
No, you shouldn't have deleted the _msdc.parent.local zone!!!!!! I'm not sure why you did that. Are you working with someone else on this that recommended to do that? If not,
you're over-thinking it. I provide specifics to fix it by simply updating the NS records, that's it. If you only found the _msdcs folder had the wrong record, then that's all you had to change.
In cases where DCs are removed, replaced, upgraded, etc, it's also best practice to check a few things to make sure things are in order, and one of them is check the NS records on all zones and delegations. Delegation's NS records won't update
automatically with changes, but zone NS records will if DCs are properly demoted.
The _msdcs delegated zone is required by Active Directory. And yes, based on your thread subject, it's best practice. When Windows 2000 came out, and IF you had created the initial domain with it, it did not have it this way, but all domains initially created
with Windows 2003 and newer are designed this way. If you had upgraded from 2000 to 2003, then one of the steps that we must perform is to create the _msdcs delegation.
Please re-create it in this order:
In the DNS console, right-click Forward Lookup Zones, and then click
New Zone. Click Next
On the Zone Type page in the New Zone Wizard, click
Primary zone, and then click to select the Store the zone in Active Directory check box. Click
Next
On the Active Directory Zone Replication Scope page, click "To all DNS servers in the Active Directory forest parent.local.
On the Zone Name page, in the Zone Name box, type
_msdcs.parent.local
Complete the wizard by accepting all the default options.
After you've done that:
Delete the _msdcs subfolder under parent.local.
Right-click parent.local, choose New Delegation.
Type in _msdcs
In the Nameserver page, type in the name of your server, and its IP address.
Complete the wizard
You should now see a grayed out _msdcs folder under parent.local.
Go to c:\windows\system32\config\ folder
Find netlogon.dns and rename it to netlogon.dns.old
Find netlogon.dnb and rename it to netlogon.dnb.old
Open a command prompt
Run ipconfig /registerdns
Run net stop netlogon
Run net start netlogon
Wait a few minutes, then click on the _msdcs.parent.local zone, and click the F5 button to refresh it.
You should see the data populate.
Ace Fekay
MVP, MCT, MCITP/EA, MCTS Windows 2008/R2 & Exchange 2007, Exchange 2010 EA, MCSE & MCSA 2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer
Microsoft MVP - Directory Services
Technical Blogs & Videos: http://www.delawarecountycomputerconsulting.com/
This post is provided AS-IS with no warranties or guarantees and confers no rights.

Best practices with sequences and primary keys

We have a table of system logs that has a column called created_date. We also have a UI that displays these logs ordered by created_date. Sometimes, two rows have the exact same created_date down to the millisecond and are displayed in the UI in the wrong order. The suggestion was to order by primary key instead since the application uses an oracle sequence to insert records so the order of the primary key will be chronological. I felt this may be a bad idea as a best practice since the primary key should not be used to guarantee chronological order although in this particular application's case, since it is not a multi-threaded environment, it will work so we are proceeding with it.
The value for the created_date is NOT set at the database level (as sysdate) but rather by the application when it creates the object which is persisted by Hibernate. In a multi-threaded environment, thread A could create the object and then get blocked by thread B which is able to create the object and persist it with key N after which control returns to thread A it persists it with key N+1. In this scenario thread A has an earlier timestamp but a larger key so will be ordered before thread B which is in error.
I like to think of primary keys as solely something to be used for referential purposes at the database level rather than inferring application level meaning (like the larger the key the more recent the record etc.). What do you guys think? Am I being too rigorous in my views here? Or perhaps I am even mistaken in how I interpret this?

>
I think the chronological order of records should be using a timestamp (i.e. "order by created_date desc" etc.)
>
Not that old MYTH again! That has been busted so many times it's hard to believe anyone still wants to try to do that.
Times are in chronological order: t1 is earlier (SYSDATE-wise) than t2 which is earlier than t3, etc.
1. at time t1 session 1 does an insert of ONE record and provides SYSDATE in the INSERT statement (or using a trigger).
2. at time t3 session 2 does an insert of ONE record and provides SYSDATE
(which now has a value LATER than the value used by session 1) in the INSERT statement.
3. at time t5 session 2 COMMITs.
4. at time t7 session 1 COMMITs.
Tell us: which row was added FIRST?
If you extract data at time t4 you won't see ANY of those rows above since none were committed.
If you extract data at time t6 you will only see session 2 rows that were committed at time t5.
For example if you extract data at 2:01pm for the period 1pm thru 1:59pm and session 1 does an INSERT at 1:55pm but does not COMMIT until 2:05pm your extract will NOT include that data.
Even worse - your next extract wll pull data for 2pm thru 2:59pm and that extract will NOT include that data either since the SYSDATE value in the rows are 1:55pm.
The crux of the problem is that the SYSDATE value stored in the row is determined BEFORE the row is committed but the only values that can be queried are the ones that exist AFTER the row is committed.
About the best you, the user (i.e. not ORACLE the superuser), can do is to
1. create the table with ROWDEPENDENCIES
2. force delayed-block cleanout prior to selecting data
3. use ORA_ROWSCN to determine the order that rows were inserted or modified
As luck would have it there is a thread discussing just that in the Database - General forum here:
ORA_ROWSCN keeps increasing without any DML

Best Practice With Work Efficient in Report server

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