What are effect of connecting to multiple database at time

I would like to know effect of having connectiong to mulptible databse
please replay me soon
thank you

The only effect is that you will have two database connections. What are you actually trying to find out or do?
No one cares if you want a reply soon.

Similar Messages

Connection to multiple databases using a single EJB

How can I connect to multiple Databases (using @PersistenceContext) using an EJB?
Did I need to connect various Entity Managers corresponding to the each database and simply send my Queries?
I am using Glassfish Application Server
Netbeans IDE
Java Derby Database
Oracle Database
Java Persistence API
Thanks in Advance

Yes, you need a persistence context and thus entity manager per database. Depending on what you want to achieve you may also need to go to the next level in your skill set and learn all about distributed transactions.

What are the advantage of using Oracle Database when compare to SQL SERVER

Hi all
Please tell anyone about
what are the advantage of using Oracle Database when compare to SQL SERVER
Thanks in advance
Balamurugan S

user12842738 wrote:
Hi,
There are various differences between the two.
1. SQL Server is only Windows, but Oracle runs on almost all Platforms.
2. You can have multiple databases in SQL Server, but Oracle provides you only one database per instance.Given that the very term 'database' has s different meaning in the two products, this "difference" is absolutely meaningless.
3. SQL Server provides T-SQL for writing programs, whereas Oracle provides PL/SQLWhich means what? Both products have a procedural programming language. They named them differently, and the languages are not interchangeable. Means nothing in comparing the features/strengths/weaknesses/suitability to purpose.
4. Backup types in both are the same. (Except Oracle provides an additional backup called Logical Backup.)You make that sound like "Logical Backup" is something more than it is. It is nothing more than an export of the data and metadata. Many experts don't even consider it a backup. I'm sure SQL Server provides the same functionality though they probably call it by some other name.
5. Both provide High Availability.Well, I guess they both have a suite of features they refer to as "High Availability". But what does that really mean? The devil is in the details. Remember, the two products don't even agree on what constitutes a "database".
6. Both come in various distributions.???
>
If you are going for an Implementation, you can try SQL Server Express Edition and Oracle XE which are free to use.
Then you can choose whichever is comfortable for your needs.
Thanks.

What is the life expectancy of the older base stations (flying saucer/spaceship looking one) and what are the telltale connection signs that it's starting to go?

What is the life expectancy of the older base stations (flying saucer/spaceship looking one) and what are the telltale connection signs that it's starting to go? Also, are there any compatiility issues with newer models and G5/G4s?

What is the life expectancy of the older base stations (flying saucer/spaceship looking one) and what are the telltale connection signs that it's starting to go?
Apple has never published any life expectancy specifications for any of their routers (or desktops/laptops) that I am aware of. As a rule of thumb, I would consider two years for any consumer electronics that operates 24 x 7 to be a reasonable period. Obviously some experience more or less and it would depend on a number of factors: ambient temperature, electrical circuit stability, area prone to lightening strikes, etc.
Some telltale signs that an AirPort has (or is about to fail):
Status lights are not illuminated or do not match any of the known configurations.
Unit feels cool to the touch after power is applied even after a lengthly (15-30 minutes) period of time.
Unit refuses to intialize, even after performing multiple "factory default" resets.
Weak or no wireless signal.
Ethernet port(s) not functioning
Etc.
Also, are there any compatiility issues with newer models and G5/G4s?
Three potential issues:
Depending on the version of OS X you are running on these clients, they may not be able to support the latest AirPort Utility required to administer the latest AirPorts. OS X 10.5.7 is the minimum required.
Support for 802.11n connectivity. Most G5 or G4 Apples support 802.11g, some only 802.11b.
Support for WPA2. Not supported if the G5 or G4 is equipped with the Original AirPort Card.

Connecting to Multiple database

Hi how could i use Dreamweaver CS3 to connect to multiple
databases in phpmyadmin?

Maneet Puri wrote:
> Hi,
>
> I have used a lot the extensions of Dreamweaver for
implementing various
> dynamic features with connectivity to MySQL databases,
and I don't think there
> is any extension which allows connecting to the multiple
MySQL database. To do
> this you will have to make changes to scripts, at one
point of time from one
> script in one instance there can just be one connection
to one MySQL database,
> what you can do is switch between the users and database
of mysql. PHP offers a
> function mysql_change_user() to switch users and connect
to various different
> MySQL database.
What is stopping you from having more than one database
connection
string? You can select the connection from each behaviour
that needs
different databases.
Or is then intent to combine the data from 2 database into
one recordset?
Dooza
Posting Guidelines
http://www.adobe.com/support/forums/guidelines.html
How To Ask Smart Questions
http://www.catb.org/esr/faqs/smart-questions.html

What are the steps for merging of database files ?

hi
i have 23 datafiles in a tablespace .i want to merge these 23 datafiles into 4 to 5 datafiles.What are the steps for merging of database files
Edited by: mithun on Oct 22, 2011 11:29 PM

>
i have 23 datafiles in a tablespace .i want to merge these 23 datafiles into no of
small no of datafiles.What are the steps for merging of database filesYou didn't mention your Oracle version.
See here for creating tablespaces http://www.adp-gmbh.ch/ora/sql/create_tablespace.html.
You can specify as many (or as few) datafiles as you like.
Then create tables in your new tablespace x_old_table_name(s) - you can Google this.
Then select the data from old_table_name(s) into x_old_table_name(s).
Drop old_table_name(s)
Rename x_old_table_name(s) old_table_name(s).
There may be a better way.
Paul...

Application that connects to multiple databases.

I am developing an application that performs many task, but one in particular is connecting to multiple databases and creating user accounts in each all with the push of a single button. I have tried putting connect statements in the trigger code but I don't get the desired results.
How would I get my application to switch database connections while in execution?
Please reply to the forum, or email me @ [email protected]
Thank you.
Travis

Hi
The only possible way which I could find for your requirement is that of DB Links. Establish DataBase Links among the multible databases, with which you want to work in one session. Peform all your actions through the DB Links.

What are the pin connections from 7764 to stepper motor drive

what are the pin connections from UMI 7764 to stepper motor drive? I use PCI 7340 controller. Third party driver is not branded, but assembled. It has 3 inputs, one for (A,A/) one for (b,b/) one for enable, apart from ground pin.

Dear enigmata,
Here is a link to the UMI Manual that describes the signal connections:
http://www.ni.com/pdf/manuals/321941b.pdf
What you really need is the documentation for the input of the "translator" mentioned on the left side of the last diagram you posted. It is still not possible to tell which of you drive inputs correspond to step and direction (or CW, CCW) because in the circuit that you posted, these signals have already been converted by other circuitry in the drive to the A, A/, B, B/ output signals for the stepper motor.
I agree with Jochen: Without the documentation you will need to test it out as he described in his last post.
Best Regards,
Nate Holmes
National Instruments

MDM 2.0.1 - What are the "_k" table in mdm database?

What are the "_k" table in mdm database? What do they contain? Examples:
* d1_dvc_k
* d1_contact_k
* d1_sp_k
* d1_install_evt_k

These tables are the 'key' tables. This concept is part of the Oracle Utilities Application Framework and is used to maintain unique key values for entities among different environments. In the past it was for example used by the archive engine to ensure the key value of entries transferred to your archive, would still remain in your live system. This would prevent the system from creating a new entry having the same key value as an entry in your archive.

What are the ports/connections on the side of a A1185 macbook laptop

I have inherited this model A1185 macbook laptop,and have no book for it.What are the ports other than power and printer used for?Can you tell me what the other 10 ports/connections are used for?

Go to support.apple.com/manuals/ where you can find documentation for the specific model you have. You can also find answers at EveryMac.com.

Does BO 4.1 enable universe to connect to multiple database?

Using BO 3.1, we can only connect an universe to single database. However, with BO 4.1 will it be possible to connect a single universe to multiple database?
Regards
Vinay

Vinay, You can connect Universe to multiple databases using IDT (Information Design Tool). Find the below link for reference.
SAP Business Objects Multi Source Universe - Information Design Tool - YouTube
Regards,
Sujitha

What are BASIS licenses found in company database after upgrade?

Dear Experts,
After upgrade from SBO2005 to SBO2007. I realized in License Administration, there are a couple of licenses called "BASIS00000004042" or "BASIS00000004817"..etc
What are these?
Much Thanks!
Warmest Regards,
Chinho

HI,
BASIS is a license component that is used to run SAP Partner addon. Without it, the user can't access the addon. Some of technical put some codes to make the license applicable to its addon and it makes the addon can't be accessed without using the BASIS component license.
Rgds,

What are the ODBC connect details for the HR sample database?

I have installed Oracle Express on Ubuntu 8.10 and read the Getting Started tutorials. Everything worked fine.
THE DSN
I need to connect via ODBC, to start with to the HR sample database on my PC.
The Getting Started tutorial says the userid and password are both hr, but what is the data source name (dsn) to be used with the SQLConnect?
THE INIs
The ini files below are the result of googling, not of any insight on my part.
/etc/odbcinst.ini
[OracleExpressdrv]
Driver = /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/lib/libsqora.so.10.1
Description = Oracle 10g express driver
/etc/odbc.ini
[hrdsn]
Driver = OracleExpressdrv
Application Attributes = T
Attributes = W
BatchAutocommitMode = IfAllSuccessful
CloseCursor = F
DisableDPM = F
DisableMTS = T
DSN = TestDSN
EXECSchemaOpt =
EXECSyntax = T
Failover = T
FailoverDelay = 10
FailoverRetryCount = 10
FetchBufferSize = 64000
ForceWCHAR = F
Lobs = T
Longs = T
MetadataIdDefault = F
QueryTimeout = T
ResultSets = T
# ServerName is TNS_alias_from_tnsnames.ora
ServerName = OraDB
SQLGetData extensions = F
Translation DLL =
Translation Option = 0
UserID = ken
THE ENVIRONMENT
Before running my odbc test program I issued
LD_LIBRARY_PATH=/usr/lib/oracle/xe/app/oracle/product/10.2.0/server/lib;export LD_LIBRARY_PATH
and checked via env command that the ldlibpath actually had been set correctly.
After SQLConnect received the following error:
Usage error: SQLConnect: dsn=hrdsn, user=hr, password=hr <<< output by my test program
1: st=IM002, nerr=0, msg=
[unixODBC][Driver Manager]Data source name not found, and no default driver specified
The first part of the error message hints at there being something wrong with dsn=hrdsn. I don't understand the second part 'and no default driver specified'.
I am totally stuck. Advice would be most appreciated.

Oracle® Database Express Edition Installation Guide for Linux talks about Compiling the Oracle ODBC Driver Demos. It tells you to download and install the unixODBC DriverManager from unixODBC. On Ubuntu this is already preinstalled and/or available via the Synaptic Manager. It also instructs you to run a makefile demo_xe.mk to build an odbcdemo program. The makefile did not work for me (hundreds of compilation errors), but I looked at the odbcdemo.c code and could see that dsn=TESTDBDSN for user=hr and password=hr. In other words, by luck the demo program seems to be connecting to the HR sample database.
I changed the /etc/odbc.ini file to:
[TestDBDSN]
Application Attributes = T
Attributes = W
BatchAutocommitMode = IfAllSuccessful
CloseCursor = F
DisableDPM = F
DisableMTS = T
Driver = OracleExpressdrv
DSN = TestDBDSN
and also in my test program which now produced the following error:
Usage error: SQLConnect: dsn=TestDBDSN, user=hr, password=hr
1: st=IM004, nerr=0, msg=
[unixODBC][Driver Manager]Driver's SQLAllocHandle on SQL_HANDLE_HENV failed
which shows that the unixODBC driver manager has loaded the driver and that the driver immediately encountered problems.
The sql calls issued before the SQLConnect("TestDBDSN", "hr" , "hr") were OK, i.e. these:
rc0 = SQLAllocHandle ( SQL_HANDLE_ENV , SQL_NULL_HANDLE , &henv ) ;
rc = SQLSetEnvAttr ( henv, SQL_ATTR_ODBC_VERSION , *)SQL_OV_ODBC3 , 0 ) ;
rc = SQLAllocHandle ( SQL_HANDLE_DBC , henv , &hdbc ) ;
SQLSetConnectAttr ( hdbc , SQL_LOGIN_TIMEOUT , (void*)5 , 0 ) ;
However, the error appears after SQLConnect and yet the rc0 was reported as OK.
The error message 'Driver's SQLAllocHandle on SQL_HANDLE_HENV failed' is totally unhelpful to me as a user since I don't know the conditions that lead to failure. I really think this calls for some documentation. Such documentation should be complete, self-contained and correct and give ALL OPERATIONAL steps, i.e. I want to know exactly what I have to do. Ambiguous English often referring to undefined terms is not what Oracle beginners like myself want.
I don't know if this is a bug. It is so fundamental that Oracle ODBC driver writers could/should not have got it wrong. The connect does not even start.
I have googled for hours, but every lead has failed.
I don't want to give up on this. What can I do?

Problem with connection to multiple Databases

i'm trying to write a sql query that returns data from tables that reside in
different databases on different servers, STYX and MICA to be exact.
I log into STYX and write the following simple SQL statement (what is
returned is really irrelevant, i'm just trying to figure out the process
right now)
select a.reason_code, b.reason
from [email protected] a,
hedgessw.reason_code b
where a.reason_code = b.reason_code
hedgessw.reason_code is on STYX
the other table is on MICA
i get the following error code
ORA-02019: connection description for remote database not found
this seems to imply that i need to create a "connection description" for the
remote database before i can establish the link.
is this the case?
if so, how do i create this?
any help you can offer would be greatly appreciated!
thanks in advance
null

What error messages are you getting?
What happens when you try to display the page?
General comments
- JSPs shouldn't be connecting to databases. That should be done in the data access layer, not the view layer. Put the code in beans/java code.
- Why reinvent the wheel? There are a couple of excellent taglibs out there that already do DB connections. Check out the JSTL sql tags.

What are the exact connections to a BNC2110 to test event counters in MAX?

I am trying to test my 6034E / BNC-2110 setup, using MAX. The
anallog inputs seem fine, but I am having trouble getting external
events counted by Counter 0 or 1. I am testing the device using
Test Panels in MAX. What is the precise wiring to do this
properly? Also, do the counters require repetitive TTL events, or
can I just twiddle 5 volts on and off by hand, to watch the
counter?

Hello sonarman,
When you are using test panels in MAX, you should be able to pick the "Edge Source" to be whatever PFI line you want to connect your signal to on the BNC 2110. For example, when I try this I choose my Edge Source to be Dev1/PFI1 so I would connect to this terminal in the digital and timing I/O section of the 2110.
If you do not see what I describe, you may have an older version of NI-DAQmx and you might upgrade to NI-DAQmx 7.5.
You may be able to just switch 5V on and off depending on how fast the voltage actually changes. The counter needs the rise time to be within TTL specifications. If this isn't working, then I would try using a TTL pulse. You can produce TTL pulses with your second counter if you need to using an example program.
I hope this helps,
Laura

What are effect of connecting to multiple database at time

Similar Messages

Maybe you are looking for