Single script to check multiple DB instances

Question

I would like to write a SQL script (or otherwise) to automatically log into an instance and find out if it's up and running at all. I would like to combine a few of these all into one script. For instance, I would like to log into instance1, then instance2, and instance3 and give some kind of output showing whether or not each instance is up and available. This is something I would like to run every morning (manually is ok) to make sure everything is ok for the day.
Thanks!
- Matt

Answer 1

I was on the right track... I did have some data provider and TNS issues that I was able to figure out. Here's what I came up with. A file called databases.txt contains info in format:
INSTANCENAME|USERNAME|PASSWORD
This is a C# .NET 2.0 application... I'm sure I'll modify it later but this is the general idea I was going for.
string[] strParams;
string strConnectionString;
StreamReader strm = new StreamReader(@"databases.txt", System.Text.Encoding.ASCII);
string strLine;
try
strLine = strm.ReadLine();
while (strLine != null &&
strLine.Length > 0)
if (strLine != null)
strParams = strLine.Split('|');
strConnectionString = @"provider=MSDAORA.1;data source=" + strParams[0] +
";user id=" + strParams[1] +
";password=" + strParams[2] + ";";
OleDbConnection dbConnection = new OleDbConnection(strConnectionString);
try
dbConnection.Open();
Console.WriteLine("SUCCESS - Database: " + strParams[0]);
catch (Exception e)
Console.WriteLine("FAILURE - Database: " + strParams[0]);
finally
dbConnection.Close();
strLine = strm.ReadLine();
catch (Exception e)
Console.WriteLine("ERROR - Unable to open file 'databases.txt' to get database information.");
finally
strm.Close();
Console.WriteLine("Complete...");
Thank you so much for all of your help!