DSNA203E DSNACA00 TCB=address CANNOT USE 'CLOSE', THERE WAS NO 'OPEN' IN EFFECT

Explanation
 A CLOSE request was received but no OPEN level
connection (implicit or explicit) existed for this task. This is a
user error. The message is accompanied by return code (R15) 200 and
code (R0) 00C10203.

System action
 No CLOSE is performed. The Db2 call attachment facility is ready for more
input.

System programmer response
 Refer the problem to the programmer
using the Db2 call attachment
facility.

Programmer response
 Correct the logic in your application.
 Do not issue CLOSE unless an explicit OPEN has been performed. 'Explicit'
OPENs occur when an application issues the call attachment facility
OPEN request.

Problem determination
 See a DSNTRACE trace stream to understand
the context of this message.