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Full Discussion: While loop variable
Top Forums Shell Programming and Scripting While loop variable Post 302770333 by zaxxon on Friday 15th of February 2013 08:43:56 AM
Old 02-15-2013
Ok Smilie
The problem will most probably be, that the DB client you are using, will just show a RC of 0 all the time, no matter if the SQL statement issued was successful or not.
You got the same issue, if you do something with a ftp client or any other client, that works fine in terms of itself, no matter what errors you get "inside" the client. There is usually issued a 0 back to the shell as the client says "Hey man, I am fine, not my fault the commands you issued didn't work because of <insertsomethingthatwentwrong>".

Can simply check this if you add a echo $RC after defining $RC while issuing an intentionally failing SQL statement in the line above.
I am not sure if there is any kind of option for your DB client to pass any other RC through to the shell. Could check it's documentation maybe; or grep for a pattern that shows the success/fail of the operation.

Update:
For DB2 I found that the client returns appropriate RCs:
http://publib.boulder.ibm.com/infoce...e/r0010411.htm
Just as an example that some clients do that.

Last edited by zaxxon; 02-15-2013 at 09:56 AM.. Reason: added info
 

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DB2_PCLOSE(3)								 1							     DB2_PCLOSE(3)

db2_pclose - Closes a persistent database connection

SYNOPSIS
bool db2_pclose (resource $resource) DESCRIPTION
This function closes a DB2 client connection created with db2_pconnect(3) and returns the corresponding resources to the database server. Note This function is only available on i5/OS in response to i5/OS system administration requests. If you have a persistent DB2 client connection created with db2_pconnect(3), you may use this function to close the connection. To avoid substantial connection performance penalties, this function should only be used in rare cases when the persistent connection has become unresponsive or the persistent connection will not be needed for a long period of time. PARAMETERS
o $connection - Specifies an active DB2 client connection. RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 Closing a persistent connection The following example demonstrates a successful attempt to close a connection to an IBM DB2 i5/OS database. <?php $conn = db2_pconnect('', '', ''); $rc = db2_pclose($conn); if ($rc) { echo "Connection was successfully closed."; } ?> The above example will output: Connection was successfully closed. SEE ALSO
db2_close(3), db2_pconnect(3). PHP Documentation Group DB2_PCLOSE(3)
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