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Invalid Handle Exception!

Hi.....

I am accessing a MS-Access db from java using JDBC:OBDC.

UPDATE RP_SW_LICENCE_ALLOCATION_RECORD SET N_LICENCE_COUNT =34 ,V_SW_ALLOCATION
_STATUS='RQ' WHERE V_SW_ID=1 AND V_WP_NO='wp001'

When I execute this query in MS-Access, it works fine. But when execute using executeQuery() method of Statement object, i get:

java.sql.SQLException: Invalid handle

Wht does this mean?
Seeking Help

Thanx in advance

regards
rajiv
0
rajivraj
Asked:
rajivraj
1 Solution
 
dorothy2Commented:
I'm not familiar with the specific exception, but you probably have (1) an error in the SQL string you are passing to the statement, or (2) in the way the statement is declared in your code.

Instead of using stmt.executeQuery(), use

String sql = "UPDATE .........='wp001'";
System.out.println(sql);
stmt.execute(sql);

You can print out your sql statement, and cut and paste it into an Access query to make sure you've got the same thing. That will rule out(1). If that doesn't work, post a code snippet and someone will be able to help you further.

Good luck,

Dorothy
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rajivrajAuthor Commented:
Yeah, i am using a string 'sql', displaying the sql string and then executing.

I copy-pasted the code in ms-access and it works!

anyway, here is query

sql="UPDATE RP_SW_LICENCE_ALLOCATION_RECORD SET N_LICENCE_COUNT ="+N_LICENCE_COUNT+" ,V_SW_ALLOCATION_STATUS='RQ' WHERE V_SW_ID="+V_SW_ID+" AND V_WP_NO='"+V_WP_NO+"'";
System.out.println(sql);
int p =st1.executeUpdate(sql);

V_WP_NO is set equal to 'wp001'
V_SW_ID is set equal to 1

0
 
TimYatesCommented:
Have you tried it as a PreparedStatement?

try:

PreparedStatement s = connection.prepareStatement( "UPDATE RP_SW_LICENCE_ALLOCATION_RECORD SET N_LICENCE_COUNT=?, V_SW_ALLOCATION_STATUS='RQ' WHERE V_SW_ID=? AND V_WP_NO=?" ) ;
s.setInteger( 1, N_LICENCE_COUNT ) ;
s.setInteger( 2, V_SW_ID ) ;
s.setString( 3, V_WP_NO ) ;
s.executeQuery() ;

Might work...

Tim.
0
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mattykCommented:
Could you post all of the DB specific code also.   Usually this error comes up when the connection up above has not been opened (or was accidentally closed prior to this).

-mattyk
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tonusCommented:
Hello,
 As per jdk API docs
   1. execute method used for any SQL statement. It can be a select or update or insert or delete Statements.
   2. executeQuery method typically used for SQL SELECT statements. It is not used for update/insert/delete statements.
   3. executeUpdate method typically used for SQL Update/Insert/delete statements. Not used for select statements.

In your query, you are using executeQuery for Updating the table, which is wrong
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MoondancerCommented:
Has this been resolved?
Moondancer
Community Support Moderator @ Experts Exchange
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