Physical Connection Best Practices

Hi;
I hope someone can help us.
We already have 4 SG300 52 ports Switches: (L2 mode)
We need to know the best way to connect the Switches and the router due to:
- Do not get excesive latency in the internal network.
- Do not get SPF problems.
- Do not get duplicated pings
- Get the maximum bandwith in the internal network.
- Get the best router link.
My thougts are:
Option 1:
Connect one uplink port to another uplink port at the next SW
Connect the other uplink port (of all Switches) to the internal SW port on the router/Firewall. (4 integrated ports 10/100)
Option 2
Connect two uplink ports to the two uplink ports at the next SW
Connect the number 1 port (of all Switches) to the internal SW port on the router/Firewall. (4 integrated ports 10/100)
Option 3
Connect two uplink ports to the number 1 and 2 port at the next SW
Connect the uplink port (of all Switches) to the internal SW port on the router/Firewall. (4 integrated ports 10/100)
Any suggestions?
Thanks.
Regards.

If you have a multi-threaded server then before long you will have two "simultaneous" requests for a database connection. These requests will want to use different connections, since as you can see if they both use it at the same time, bad things will happen. You could synchronize so they wait in line to use the single connection but I think you can see that doesn't scale well to higher load.
So you need to have access to more than one connection. What's commonly done in multi-threaded servers is to use a connection pool. You can get open-source connection pools, so don't spend any time writing your own. (They aren't easy to get right.)

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External connectivity best practice

Hi,
I would like to know what are the best practices to have external users using Excel to connect to SSAS cube. I understand the general concept that a cube user must be in a domain AD andthat same user is a member of a SSAS cube.
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Regards

Most modern external drives will typically go into a standby mode shortly after they're unmounted or disconnected which will spin down the drive. They'll still use some power, but your drive won't be doing anything so you don't need to worry about wearing it out. I'm a bit anal about stuff. I usually go so far as to unplug my external drives when I'm not using them as the power supply still consumes some juice... but, in your case, as it seems like you probably go back and forth quite a bit... just powering it down would be the best thing. It really doesn't take any extra effort when connecting your MacBook Pro to just switch it back on again.

How to establish the connection - Best Practice

Following is my code for database connection
import java.sql.Connection;
import java.sql.DriverManager;
import oracle.jdbc.driver.OracleDriver;
public class DBConnect
     private static Connection connection = null;
     static
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Edited by: shashiwagh on Feb 1, 2010 11:25 AM
Edited by: shashiwagh on Feb 1, 2010 11:26 AM

First, handle your exceptions properly.
Second, you should not normally create static database connections.
Third, hardcoding connection data like that is not a good idea.

Access Connections best practice

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Hi!
Use non overlapping channel 1-6-11 on 3
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Hi,
I'd like to ask a follow-up question.
How do I close the connection after the session timed out or the user leaves the application by closing the browser?
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http://h-sq.com/products/airmount/index.html
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Hi,
I have a web application that uses JDBC to retrieve information and display it. My question is: What is the best way to manage your connection objects? I know using a connection pool is probably best, but I'm curious to hear good alternatives? If I need a connection in several places in my web-app, then storing one Connection object in the session seems like a good idea. This way I don't have to create and close my connections each time and slow down performance. But what happens to the connection when the user is no longer in the session. Does the database close the connection implicitly and is there any cons to doing it this way?
Thanks

Hi,
I have a web application that uses JDBC to retrieve
information and display it. My question is: What is
the best way to manage your connection objects? I know
using a connection pool is probably best, but I'm
curious to hear good alternatives? If I need a
connection in several places in my web-app, then
storing one Connection object in the session seems
like a good idea. The term "session" usually refers to a 'space' that exists both on a client and a server.
Connections never exist on more than one machine or even more than one application.
This way I don't have to create and
close my connections each time and slow down
performance. But what happens to the connection when
the user is no longer in the session. Does the
database close the connection implicitly and is there
any cons to doing it this way?
Well one con is that in general you have no control over when the "session" is closed. Thus you must rely on finalize in a java class to close your connections via the GC. And unless you have a really unusual database, or you only use a couple of "sessions" an hour, you are going to run out of connections. This is because GC is optimized for memory handling and not any other resource (a connection is a resource.)

Closing DB Connection-Best Practice

Currently I am opening and closing my connection to the database on each event that warrants a database connection. Is this the way I should handle it, or should I open the connection at the beginning and close it at the end, leaving it open in between?
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Thanks

Hi,
As far as an application is concerned we usually wont advice opening and closing connection as and when necessary. But if the connection is open for a long time there are some possible problems. One is that if the server goes down the user wont be aware of that till he executes the next query and also the error wont will be a valid one.Next is the amount of time ther server holds the connection and this has its significance if max. number of connections is specified.
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regards Stallon

Sql connection best practices

Can someone discuss the pros and cons of setting your db connection in the web.xml and then using the following in a jsp;
<sql:query var="myQuery">
SELECT * FROM mytable
</sql:query>I find that it is quick and easy, but would I want to give this kind of code to my supervisor? From 20,000 ft up. :)
Edited by: Reme on Aug 2, 2008 5:12 AM

[http://java.sun.com/javaee/5/docs/tutorial/doc/bnald.html]
The JSTL SQL tags for accessing databases listed in Table 7-7 are designed for quick prototyping and simple applications. For production applications, database operations are normally encapsulated in JavaBeans components.I wouldn't use it. Layer your application properly. Make use of a DAO class.

What is the best practice to connect 2 sites and replicate ADDS between 2 different sites using windows server 2012 r2?

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See this
https://social.technet.microsoft.com/Forums/windowsserver/en-US/133e7780-6a59-4bd7-906b-70830bea48d0/sites-connections-best-practice?forum=winserverDS
Regards,
Biswajit
MCTS, MCP 2003,MCSA 2003, MCSA:M 2003, CCNA, Enterprise Admin, ITIL F 2011
Blog:
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Note: Disclaimer: This posting is provided & with no warranties or guarantees and confers no rights..

[XI 3.1] BEST PRACTICE method of Oracle connection for RPTs on Linux

Business Objects XI (3.1) - SP3.
Running on Red Hat Enterprise Linux OS.
7,000+ Crystal Reports 2008 *.rpt objects ONLY (No Universe / No WebI).
All reports connecting to Oracle 10g databases.
==================
In the past, all of this infrastructure was running on Windows Server OS and providing the database access via a Named ODBC connection (eg. "APP_DATA".)
This made it easy to manage as all the Report Developers had a standard System DSN called "APP_DATA" which was the same as the System DSN name on all of our DEV, TEST/UAT, and PROD servers for Business Objects.
When we wanted to move/promote a *.rpt file from DEV to PROD we did not have to change any "Database Connection" info as it was all taken care of by pointing the System DSN called "APP_DATA" a a different physical Oracle server at the ODBC level.
Now, that hardware is moving from Windows OS to Red Hat Linux and we are trying to determine the Best Practices (and Pros/Cons) of using one of the three methods below to access the Oracle database for our *.rpts....
1.) Oracle Native connection
2.) ODBC connection
3.) JDBC connection
Here's what we have determined so far -
1a.) Oracle Native connection should be the most efficient method of passing SQL-query to the DB with the fewest issues and best speed [PRO]
1b.) Oracle Native connection may not be supported on Linux - http://www.forumtopics.com/busobj/viewtopic.php?t=118770&view=previous&sid=9cca754b468fc67888ab2553c0fbe448 [CON]
1c.) Using Oracle Native would require special-handling on the *.rpts at either the source-file or the CMC level to change them from DEV -> TEST -> PROD connection. This would result in a lot more Developer / Admin overhead than they are currently used to. [CON]
2a.) A 3rd-Party Linux ODBC option may be available from EasySoft - http://www.easysoft.com/products/data_access/odbc_oracle_driver/index.html - which would allow us to use a similar Developer / Admin overhead to what we are used to. [PRO]
2b.) Adding a 3rd-Party Vendor into the mix may lead to support issues is we have problems with results or speeds of our queries. [CON]
3a.) JDBC appears to be the "defacto standard" when running Oracle SQL queries from Linux. [PRO]
3b.) There may be issues with results or speeds of our queries when using JDBC. [CON]
3c.) Using JDBC requires the explicit-IP of the Oracle server to be defined for each connection. This would require special-handling on the *.rpts at either the source-file (and NOT the CMC level) to change them from DEV -> TEST -> PROD connection. This would result in a lot more Developer / Admin overhead than they are currently used to. [CON]
==================
We would appreciate some advice from anyone who has been down this road before.
What were your Best Practices?
What can you add to the Pros and Cons listed above?
How do we find the "sweet spot" between quality/performance/speed of reports and easy-overhead for the Admins and Developers?
As always, thanks in advance for your comments.

Hi,
I just saw this article and I would like to add some infos.
First you can quite easely reproduce the same way of working with the odbc entries by playing with the oracle name resolution on the server. By changing some files (sqlnet, tnsnames.ora,..) you can define a different oracle server for a specific name that will be the same accross all environments.
Database name will be resolved differently regarding to the environment and therefore will access a different database.
Second option is the possibility to change the connection in .rpt files by an automated way like the schedule manager. This tool is a additional web application to deploy that can change the connection settings of rpt reports on thousands of reports in a few clicks. you can find it here :
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/80af7965-8bdf-2b10-fa94-bb21833f3db8
The last option is to do it with a small sdk script, for this purpose, a few lines of codes can change all the reports in a row.
After some implementations on linux to oracle database I would prefer also the native connection. ODBC and JDBC are deprecated ways to connect to database. You can use DATADIRECT connectors that are quite good but for volumes you will see the difference.

Best Practices to configure the connectivity with Bank and EBS

Hi All,
We are working on a requirement where Middleware(SOA) has to read the file from Oracle E-biz server and send it to BANK.
For Connectivity setup between Oracle E-biz and Middleware(SOA), Middleware(SOA) and BANK do we need to use oracle as user or we can use any user to communicate between E-biz and Bank?
Could you please share best practices/documents if you have any on how we should establish the connectivity and setup the workflow with Bank and E-Biz. E-Business
Thanks & Regards
Narendra

Hi Narendra,
Oracle User and the FTP user are 2 different users.
I'm assuming you'll be reading the file from R12 through File Adapter and writing it to Bank using FTP Adapter.
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Error while Connecting report Best Practices v1.31 with SAP

Hello experts,
I'm facing an issue while trying to connect some of my reports from Best Practices for BI with SAP.
It only happens when it's about info sets, the other ones that are with SAP tables go smoothly without a problem.
The most interesting is I have already one of the reports connected to SAP info sets.
I have already verified the document of steps of creation of additional database that comes with BP pack. They seem ok.
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I'm kind of lost to solve this, because I'm not sure if it can be in the SAP JCO or some parameter that was done wrongly in SAP and I have already check possible solutions for both.
Thanks in advance,
Carlos Henrique Matos da Silva - SAP BusinessObjects BI - Brazil.

I re-checked step 3.2.3 - Uploading Crystal User Roles (transaction PFCG) - of the manual where it talks about CRYSTAL_ENTITLEMENT and CRYSTAL_DESIGNER roles, I noticed in the Authorizations tab that the status was saying it hadn't been generated and I had a yellow sign, so then that was what I did (I generated) as it says in the manual.
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I had another issue in the User tab (it was yellow as Authorizations one before generating)....all I needed to do to change to green was comparing user (User Comparison button).
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BEST PRACTICES FOR CREATING DISCOVERER DATABASE CONNECTION -PUBLIC VS. PRIV

I have enabled SSO for Discoverer. So when you browse to http://host:port/discoverer/viewer you get prompted for your SSO
username/password. I have enabled users to create their own private
connections. I log in as portal and created a private connection. I then from
Oracle Portal create a portlet and add a discoverer worksheet using the private
connection that I created as the portal user. This works fine...users access
the portal they can see the worksheet. When they click the analyze link, the
users are prompted to enter a password for the private connection. The
following message is displayed:
The item you are requesting requires you to enter a password. This could occur because this is a private connection or
because the public connection password was invalid. Please enter the correct
password now to continue.
I originally created a public connection...and then follow the same steps from Oracle portal to create the portlet and display the
worksheet. Worksheet is displayed properly from Portal, when users click the
analyze link they are taken to Discoverer Viewer without having to enter a
password. The problem with this is that when a user browses to
http://host:port/discoverer/viewer they enter their SSO information and then
any user with an SSO account can see the public connection...very insecure!
When private connections are used, no connection information is displayed to
SSO users when logging into Discoverer Viewer.
For the very first step, when editing the Worksheet portlet from Portal, I enter the following for Database
Connections:
Publisher: I choose either the private or public connection that I created
Users Logged In: Display same data to all users using connection (Publisher's Connection)
Users Not Logged In: Do no display data
My question is what are the best practices for creating Discoverer Database
Connections.
Is there a way to create a public connection, but not display it in at http://host:port/discoverer/viewer?
Can I restrict access to http://host:port/discoverer/viewer to specific SSO users?
So overall, I want roughly 40 users to have access to my Portal Page Group. I then want to
display portlets with Discoverer worksheets. Certain worksheets I want to have
the ability to display the analyze link. When the SSO user clicks on this they
will be taken to Discoverer Viewer and prompted for no logon information. All
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SSO username...1 database user will be set up in either the public or private
connection.

You can make it happen by creating a private connection for 40 users by capi script and when creating portlet select 2nd option in Users Logged in section. In this the portlet uses there own private connection every time user logs in.
So that it won't ask for password.
Another thing is there is an option of entering password or not in ASC in discoverer section, if your version 10.1.2.2. Let me know if you need more information
thnaks
kiran

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