17002 Error In Oracle
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Oracle Sql Error 17002 Sqlstate 08006
"Io Exception: The Network Adapter could not establish the connection" If you search for the Oracle error "Io Exception: The Network Adapter could not establish the connection" (ORA-17002) you will find plenty of discussion on the web. It usually comes down to what the message says, that is a network issue. But the error can also be caused by e.g. incompatible jar files. In my case, however, I was trying to access a 11g R2 instance from SQL Developer and during initial setup everything had worked. And local access, also with SQL Developer, worked absolutely fine. Solution: Replace "simple" DB hostname with the fully qualified one. I am not sure why this changed the behavior. I can think of either a DNS setup issue (although my search list included the domain) or some kind of reverse lookup logic that is being applied. Anyway, I wanted to share this finding and also record it for my own future use. Posted: October 5th, 2010 under Technical Stuff. Tags: Oracle 11g R2 « Previous post Next post » Comments Comment
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Oracle Sql Developer Error 17002
Fix SQL Developer vendor error 17002 Oracle tips by Burleson December 15, 2015 oracle 17002 the network adapter Question: I was trying to connect to Oracle through SQL developer, and I see this error. io exception: the network adaptor sql error: 17002, sqlstate: 08006 could not establish the connection Vendor code 17002 Answer: In your case the "Vendor code 17002" is the equivalent of the ORA-12541 error: It's most likely that your listener is down, or has an improper port or http://www.christoph-jahn.com/?p=1074 service name. From the docs: ORA-12541: TNS no listener Cause: Listener for the source repository has not been started. Action: Start the Listener on the machine where the source repository resides. Basically, SQL Developer could not find the listener. First check the tnsnames.ora file and ensure that it points to the correct server and port. If the Forms server is on another machine, test the TNS resolve with tnsping from the command prompt. Finally, http://www.dba-oracle.com/t_sql_developer_vendor_error_17002.htm check the listener. # lsnrctl status This should show the status of the listener and the services it is listening for. Remember that when you run SQL*Plus on the database server, it does not need the listener to connect unless you specify the database tnsnames.ora entry. You can use the lsnrctl status command to verify that the listener is down, and lsnrctl start to start your listener. If you are on Windows, also verify that the listener service is running. �� Burleson is the American Team Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals. Feel free to ask questions on our Oracle forum. Verify experience! Anyone considering using the services of an Oracle support expert should independently investigate their credentials and experience, and not rely on advertisements and self-proclaimed expertise. All legitimate Oracle experts publish their Oracle qualifications. Errata? Oracle technology is changing and we strive to update our BC Oracle support information. If you find an error or have a suggestion for improving our content, we would appreciate your feedback. Just e-mail: and include the URL for th
44,728 I am unable to login to my database. I get an error that says "Io exception: the network adapter could not establish the connection""vendor code 17002"I am a student learning SQL http://dbaforums.org/oracle/index.php?showtopic=20579 and need to take a midterm very soon. This is problematic for me. please help! thanks,adam SteveC View Member Profile Feb 21 2011, 04:42 PM Post #2 Advanced Member Group: Members Posts: 2,836 Joined: 11-March 08 Member No.: 18,933 Since your environment is specific to your class setup, and no one here would begin to have a clue about the vendor error given that you have not provided any information regarding same, your best bet is to get help from your school's IS/IT support sql error office or from your instructor. This close to a mid-term, you should have had this environment figured out in the first week or so of the term. sgrenci View Member Profile Feb 21 2011, 06:01 PM Post #3 Newbie Group: Members Posts: 2 Joined: 21-February 11 Member No.: 44,728 QUOTE (SteveC @ Feb 21 2011, 04:42 PM) Since your environment is specific to your class setup, and no one here would begin to have a clue about the vendor error given that you sql error 17002 have not provided any information regarding same, your best bet is to get help from your school's IS/IT support office or from your instructor. This close to a mid-term, you should have had this environment figured out in the first week or so of the term.Hi Steve,its been working for me all semester. it just stopped working this morning! how do I validate the "listener?" and get the tsnames?thanks,adam SteveC View Member Profile Feb 22 2011, 02:22 PM Post #4 Advanced Member Group: Members Posts: 2,836 Joined: 11-March 08 Member No.: 18,933 Maybe a book on Oracle would help you.http://www.rampant-books.com/book_0501_eas...e_jumpstart.htm SSI View Member Profile Mar 3 2012, 10:49 AM Post #5 Newbie Group: Members Posts: 1 Joined: 3-March 12 Member No.: 46,869 Hey Adam,I just recently experienced this same problem on a production database where my connection just stopped working. Friday it worked and Saturday it doesn't. I came here looking for an answer but it is obvious there are none based on the replies you received so far. Anyway, my problem first showed up in TOAD as a ORA-12541 error. Worked with the DBA whose best response was that it works for others. I abandoned TOAD and switched to SQL Developer but could only use a basic connection (not TNS names). That worked for several weeks and it has now stopped working with the same error you received (17002), which points to a TNS error - only I'm not using TNS entries to connect.None of that helps solve y