Hi,

I am using DBI(v1.642) and DBD-Sybase-freetds(v1.08) to connect to a SQL server cluster. The connection fails randomly. After some investigation, I find the DB hostname is resolved to two IP addresses by a DNS server. Only one IP address is working and the other IP is not working. This causes the DB connection to fail randomly. Here is the DB connection error message.

err: 41 sev: 78 state: 0 line: 0 server: not available proc: not available msg: Server is unavailable or does not exist. sql: not available err_type: client

Here are the DB connection codes.

$ENV{'TDSVER'} = '7.0';
my $DBhandle = DBI->connect( "DBI:Sybase:host=$Hostname;port=$Port;dat
+abase=$DBName", "$UserID", "$Pwd", { syb_err_handler => \&SybaseError
+Handle } );

[download]

Any idea how to deal with hostname that returns multiple IP addresses but only one is ACTIVE with DBI?

In reply to Database connection issue with SQL server cluster by sophate

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