Parallel database connections and single query between databases

Hi, I am looking to execute this SQL query between 2 different databases to update a local database based on data selected from a remote one.
e.g.:
- Local database name: db1
- local database schema: dbo
- local database table1
- remote database name: db2
- remote database schema: dbo
- Remote database table: table2
- Query: "SELECT * FROM db2.dbo.table2 WHERE NOT EXISTS(SELECT * FROM db1.dbo.table1)" <- This gets e the record set i would need to insert, and I already have a vi to do that kinda thing.
How do I go about this?
Thanks,
Mohamed

Mohamed,
There is a VI in the Database Connectivity Toolkit that allows you to execute SQL queries: DB Tools Execute Query.
http://zone.ni.com/reference/en-XX/help/370016E-01/lvdatabase/db_tools_execute_query/
Is this what you are looking for?
Drew T.
NIC AE Specialist

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regards
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email:[email protected]

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Chris,
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[url http://forums.bea.com/bea/message.jspa?messageID=400007669&tstart=0]http://forums.bea.com/bea/message.jspa?messageID=400007669&tstart=0
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Hi,
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<login>
<user-name>sa</user-name>
<password></password>
<datasource>java:comp/env/jdbc/ejbJTSDataSource</datasource>
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When using this approach you need to change your TopLink code slightly in the EJB methods:
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example) with something like:
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b. Calls to uow.commit() can be ommitted or commented out
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Pete

Labview Database Connection Toolkit and decimal point

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on my system I use "," (comma) as decimal point.
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Has anyone experienced this issue?
Is this related to Labview or MySQL ODBC Connector (that I'm using to connect to a mySQL DB)?
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You have two or three places to look. First there is the DCT. Second, there's a couple layers there that could cause problems (the mySQL drivers and ADO) and then there's even the posibility that the issue could be in the DBMS itself.
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Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

Database connectivity toolset and microsoft access

Bonjour,
je suis débutante labview et j'aurais besoin d'aide...
voici mon pb:
j'ai créé une table sous microsoft access et j'aimerais lire les données à partir de labview en utilisant "database connectivity toolset". les vi utilisés sontpen connection, select data et close connection.
le vi "open connection" demande le 'connection information': j'ai donc donné le chemin ou se trouve mon fichier .udl
ce fichier udl est configuré comme cela:
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mais ca ne marche pas! j'ai une erreur apres le vi select data, qui me dit 'erreur syntax'
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merci pour une réponse rapide.

Bonjour,
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http://digital.ni.com/public.nsf/websearch/1D5EB4DCBD13106486256B9D005E11B0?OpenDocument
Ensuite, testez l'exemple standard "Connection example.vi" fourni avec le toolkit Database Connectivity.
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Si la connection échoue, l'exemple doit renvoyer une erreur avec un code et un descriptif. Ces informations sont indispensables pour débuter un débuggage (l
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Cordialement.
Matthieu Gourssies
National Instruments France.

Database connection is not closing in the database pool

Hi,
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i am declaring on the top of the try block
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try
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Single database connection create and using all programs jsp and servlet

Hai
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Post the steps you managed already. If you don't know anything about how to receive data from a database try this link:
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Database connection timeouts and datasource errors

Connections in the pool randomly die overnight. Stack traces show that for some reason, the evermind driver is being used even though the MySql connection pool is specified.
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Sometimes we get non-serializable errors when trying to retrieve the datasource (this is only after the other errors start). Some connections returned from the pool are still good, so the application limps along.
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Rick,
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production version of OC4J stand-alone.
I'm using container managed persistence,It was not clear to me, from your previous post, that you
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I found staleness-timeout and alive-poll-query
somewhere on a website when trying to track this
down. Here's four sources:Those sources refer to OrionServer -- and an older version, too, it seems.
Like all other Oracle products that start out as somebody
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Need to get data from multiple database instances in a single query

Hi,
I need a small favour from you guys. The prob is as follows:
I need to get name, row_id from table A from schema 1 and gbu_name, name from table B from schema 2 where a.name = b.name. I wrote the query in the following manner:
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But this query is not working and the error is like " The table does not exists".
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Thanks & Regards,
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Ah, youre actually asking different things.
In your topic title, you say youre running separate instances
In your body text, you say you are under different user/schema
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a.id, b.id
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Message was edited by:
charred

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Last two week back we have migrated the QA BW system to HA environment by using the system copy method (backup/restore method), after that we are facing two issues.
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Kindly support us
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The "DB Tools Close Connection VI" does not free all the memory used when "DB Tools Open Connection VI" connects to "MySQL ODBC Driver 3.51".
I have made a small program that only opens and close the connection that I run continously and it's slowly eating all my memory. No error is given from any of the VI's. (I'm using the "Simple Error Handler VI" to check for errors.)
I've also tried different options in the DSN configuration without any results.
Attachments:
TestProgram.vi ‏16 KB
DSNconfig1.jpg ‏36 KB
DSNconfig2.jpg ‏49 KB

Also,
I've duplicated the OPs example: a simple VI that opens and closes a connection. I can say this definately causes a memory leak.
Watching the memory:
10:17AM - 19308K
10:19AM - 19432K
10:22AM - 19764K
10:58AM - 22124K
Regards,
Ken
Attachments:
OpenCloseConnection.vi ‏13 KB

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Mitko

Yes. :)

Parallel database connection​s and single query between databases

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