Database Running status using Ping in ASP.Net

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HI,
I want to test the Oracle and SQL servers running are Up or Down. Currently, I am using the following way to check the connection.. for example Oracle connection as ..

Dim cn As OracleConnection
cn = New OracleConnection(ConnStr)
cn.Open()

This is working fine. But, is there any other way to check the DB up status like Ping.
Please suggest.

Posted 12-Feb-11 3:46am

Sreenath Gv

Updated 12-Feb-11 4:26am

Yusuf

v2

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Nish Nishant · Answer 1 · 2011-02-12T03:49:00

Solution 1

You could do a mix of pinging the server IP and also doing a TCP connection to the server port (to see if it's open). But while that would establish that the machine is up and accessible over the network, and that the database server is listening on the expected ports, it does not guarantee that the database is in a stable condition, for that you do need to actually try establishing a database connection as you are doing above.

Posted 12-Feb-11 3:49am

Nish Nishant

Updated 12-Feb-11 3:50am

v2

Comments

Sreenath Gv 12-Feb-11 10:04am

Hi, Nishanth thanks a lot. But, if connection fails, it thows error..and I am handling it..but not sure when it will crash right. Any idea..!

Nish Nishant 12-Feb-11 10:04am

It's Nishant please (no h) :-)

And what do you mean by "crash"? Your app or the DB server?

Sreenath Gv 12-Feb-11 10:12am

No I mean, browser may freez due to continuous exceptions..!

Nish Nishant 12-Feb-11 10:27am

Well the ping code will be running on the backend, so it should not affect the browser.

Sreenath Gv 12-Feb-11 10:09am

it alwasy throws error if connection fails. In this way, I am looping some 10 to 15 Oracle and SQL servers..and if most of them are down then it will throw execption many times. That was the reason why I am trying to get some other way actually.
Any idea on this.

Nish Nishant 12-Feb-11 10:27am

Well the exception can be caught and you can show an appropriate message. Also don't try connecting too frequently, try and set a gentler pace - so check to see if the database is up every 10 minutes.

Ali Al Omairi(Abu AlHassan) 12-Feb-11 10:52am

Dear, I don't know what is wrong with exception. it tills the administrator what wrong with his system. for the client you can cought it and send an appropiate response by using try-catch statment. (I remember that I once was dieing to get one clear exception).

100 :rose: ;)

Yusuf · Answer 2 · 2011-02-12T04:32:00

Solution 2

You are in the right direction. You can check for the connection state as well

VB

Dim cn As OracleConnection
cn = New OracleConnection(ConnStr)
cn.Open()
If (cn.State And ConnectionState.Open) > 0 Then
    'Do whatever you want
    cn.Close()
Else
    'Oops, it an't open
End If

Posted 12-Feb-11 4:32am

Yusuf