amazon ec2 - ORA-12170 TNS listener in oracle 11g -


i have setup windows server 2008r2 oracle server 11g (11.2) , small database (mydb) in amazon ec2.

now want connect computer database (i use pl/sql developer don't mind using other tools)

in server side have: (where ec2-xx-xxx-xxx-xx.us-west-2.compute.amazonaws.com public dns win server.)
tnsnames.ora:

 mydb =    (description =      (address = (protocol = tcp)(host = ec2-xx-xxx-xxx-xx.us-west-2.compute.amazonaws.com)(port = 1521))      (connect_data =       (service_name = mydb)      )    )

listener.ora: 

 # listener.ora network configuration file: c:\app\administrator\product\11.2.0\dbhome_1\network\admin\listener.ora  # generated oracle configuration tools.   listener =      (description_list =       (description =        (address = (protocol = tcp)(host = ec2-xx-xxx-xxx-xx.us-west-2.compute.amazonaws.com)(port = 1521))        (address = (protocol = ipc)(key = extproc1521))       )     )     adr_base_listener = c:\app\administrator

at pc @ tnsnames.ora have: 

 mydb=   (description =     (address = (protocol = tcp)(host = ec2-xx-xxx-xxx-xx.us-west-2.compute.amazonaws.com)(port = 1521))     (connect_data =      (service_name = mydb)     )   )

with these settings, able connect locally @ server, not through computer.
have setup security groups @ ec2:

inbound rules

type                protocol              port range     source rdp                 tcp                   3389           anywhere 0.0.0.0/0 ssh                 tcp                   22             anywhere 0.0.0.0/0 custom icmp rule    echo reply            n/a            anywhere 0.0.0.0/0

when trying connect computer

ora-12170:tns:connect timeout occurred.

any ideas doing wrong, or troubleshooting plan?

your security groups allow rdp , ssh access, on ports 3389 , 22 (plus icmp ping). when attempt connect database you're using port 1521, tnsnames.ora dictates:

(host = ec2-xx-xxx-xxx-xx.us-west-2.compute.amazonaws.com)(port = 1521))

so need add inbound firewall rule allow traffic on tcp port 1521 through ec2 instance, in addition existing ones 3389 , 22. have no idea if sql*net listed in 'type' drop down, might need select 'all tcp'.

you might want make more restrictive though - limiting 'source' pc's ip address perhaps if private, or company's outgoing ip if not; if have static public ip isp.


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