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POFailure to connect to SQl Server from Linux
 

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  1. POFailure to connect to SQl Server from Linux
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    <p>I am trying to connect to SQL Server 2008 on CentOS 5.8. I am using unixODBC 2.3.0 and SQL Server ODBC Driver (www.microsoft.com/en-us/download/details.aspx?id=28160).</p> <p>When I try to test the connection by running:</p> <pre><code>isql -v mydsn username password </code></pre> <p>it givens me:</p> <pre><code>[S1T00][unixODBC][Microsoft][SQL Server Native Client 11.0]Login timeout expired [08001][unixODBC][Microsoft][SQL Server Native Client 11.0]A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information see SQL Server Books Online. [08001][unixODBC][Microsoft][SQL Server Native Client 11.0]TCP Provider: Error code 0x2726 [ISQL]ERROR: Could not SQLConnect </code></pre> <p>The port is open, the server is accessible.</p> <p>I was trying to diagnose the problem further, but got stuck here:</p> <pre><code> strace -e trace=network isql -v mydsn username password socket(PF_FILE, SOCK_STREAM, 0) = 3 connect(3, {sa_family=AF_FILE, path="/var/run/nscd/socket"...}, 110) = -1 ENOENT (No such file or directory) socket(PF_FILE, SOCK_STREAM, 0) = 3 connect(3, {sa_family=AF_FILE, path="/var/run/nscd/socket"...}, 110) = -1 ENOENT (No such file or directory) socket(PF_FILE, SOCK_STREAM, 0) = 3 connect(3, {sa_family=AF_FILE, path="/var/run/setrans/.setrans-unix"...}, 110) = 0 sendmsg(3, {msg_name(0)=NULL, msg_iov(5)=[{"\1\0\0\0", 4}, {"\1\0\0\0", 4}, {"\1\0\0\0", 4}, {"\0", 1}, {"\0", 1}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 14 socket(PF_FILE, SOCK_STREAM, 0) = 4 connect(4, {sa_family=AF_FILE, path="/var/run/nscd/socket"...}, 110) = -1 ENOENT (No such file or directory) socket(PF_FILE, SOCK_STREAM, 0) = 4 connect(4, {sa_family=AF_FILE, path="/var/run/nscd/socket"...}, 110) = -1 ENOENT (No such file or directory) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) socket(PF_INET, 0x80001 /* SOCK_??? */, IPPROTO_TCP) = -1 EINVAL (Invalid argument) </code></pre> <p>Apparently, there is something wrong going on with the establishment of connection.</p> <p>Can anyone help me? Please let me know if you need any other info.</p> <p>Thanks</p>
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    1. USkirylm
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    1. COAre you sure it's a default instance and not a named instance? Did you try to telnet to the server on port 1433? Did you try the server name or IP address instead of an antiquated DSN? How have you verified that the port is open and the server is accessible? What port? How do you know that is the right port? Details, details, details...
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      1. POFailure to connect to SQl Server from Linux
      1. USAaron Bertrand
 

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