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Sockets

 
Sam Bluesman
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Hi there.

I am trying to connect to a mysql server that does not have a port number, but does have a socket.

My understanding is that in the past JDBC did not support sockets. Does it now? How do I go about setting up a connection using the socket if I already have the code below?

Thanks.

 
Scott Selikoff
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Have you tried the default port number? I'm sure there's a port number configured for the mysql server.
 
Sam Bluesman
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Hi,

No - there is no port number when i type 'status' at the MySQL prompt. I have tried the default 3306 and this did not work...

I get the error:

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
Last packet sent to the server was 0 ms ago.
 
Scott Selikoff
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Can you view the MySQL config file? my.ini in windows, my.cnf in mac/linux.
 
Scott Selikoff
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Sam Bluesman wrote:No - there is no port number when i type 'status' at the MySQL prompt. I have tried the default 3306 and this did not work...

I get the error:

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
Last packet sent to the server was 0 ms ago.


Ok first, the fact that you can't connect may indicate a firewall or configuration error. Second, *how* are you connecting to the server to send the status command?
 
Sam Bluesman
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I don't have priviliges to see that.
 
Scott Selikoff
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Sam Bluesman wrote:I don't have priviliges to see that.


It would definitively answer which port to use. The file usually contains a [client] port value in it.

Either way, how are you connecting to MySQL to send commands? My guess would be you are using the port you are looking for.
 
Sam Bluesman
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Hi,

OK so I have been using putty to connect to the server and then logged into mysql from there, using the defauly port:22 option.

That seems to have done something but given the code above I am not getting the following error:

com.mysql.jdbc.PacketTooBigException: Packet for query is too large

But this still does not put "Sucess" as it should in the code so not sure if it connecting. Any advice?

Thanks
 
Scott Selikoff
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1) Contact the DBA and find out the port. You shouldn't be guessing.

2) Use the standard driver and driverName. The mm driver hasn't been updated in 8 years
 
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