Queries in SQL developper do not return anything?

982153 Dec 29, 2012 8:16 AM

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Hello there,

First of I am completely new to Oracle and IT in general. Apart from having used computers since the heyday my knowledge of programming is very little. I have been reading Oracle documentation and bought the CBT nuggets tutorials to prepare for examination.

I have followed the instructions to install the HR schema which worked in SQL*Plus but whenever i go into SQL developper and create a connection using the same username/password as I did in SQL*plus, then type in the select table_name from user_tables; query, nothing happens.

What am I doing wrong? Am i simply not connecting to the same DB?

Thanks in advance

1. Re: Queries in SQL developper do not return anything?

Mukesh75 Dec 29, 2012 8:28 AM (in response to 982153)

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first test the connection.
if success then write the query and check in query result pane.
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2. Re: Queries in SQL developper do not return anything?

982153 Dec 29, 2012 8:41 AM (in response to Mukesh75)

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What do you mean by test the connection? In SQL developer it 'connects' to the database which has the same password as I used to log into SQL PLus.
I made a new connection called HR in SQL developer with the username System and same password.
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3. Re: Queries in SQL developper do not return anything?

Jim Smith Dec 29, 2012 9:55 AM (in response to 982153)

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You need to be logged in as HR.

"Select * from user_tables" returns the tables owned by the current user and system doesn't own any tables.
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4. Re: Queries in SQL developper do not return anything?

982153 Jan 2, 2013 7:05 AM (in response to Jim Smith)

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So when i set up the HR schema using SQL plus and was prompted to give a password for HR, i did that. Now when i open up the SQL plus (as administrator) and log in using username HR and the password i set for it, I can access the Schema's default tables such as employees.

However on SQL developper, I open up a new connection called HR and put the same password that HR uses on SQL plus but whenever I attempt a select statement there are no returns. It just seems like SQL developper is not connected to the database.

I am currently using the CBT nuggers tutorial for the fundamentals exam 1z0-051 and the tutorial uses both SQL developer and SQL plus.

I appreciate all the responses but unfortunately I am stuck :(

I get this message when i go to Query builder:

Text is not a valid, single SELECT statement.
Syntax Error at line 4, column 9

select * employees;
^^^

Expected: ',','BULK','FROM','INTO',BULK_COLLECT_opt,from_clause,into_list,
Query Builder disabled.

Edited by: Vlakarmis on Jan 2, 2013 7:04 AM
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5. Re: Queries in SQL developper do not return anything?

982153 Jan 2, 2013 7:22 AM (in response to 982153)

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Sorry guys I finally figured it out. I had the message log opened and thus could not see that actually the queries were being returned. MY apologies and thank you for your help :)
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