This doesnt seem to be a perl problem at all, or were you trying to install DBD::DB2?

Anyway, the error you got means that somehow it cant find the localised version of the error message for SQL1512N, which is this:

SQL1512N 
ddcstrc could not write to the specified file. 
Explanation: 

ddcstrc was not able to write the trace information to the filename th
+at it has been instructed to write to. 
User Response: 

Ensure that the filename specified is valid for your file system. If a
+ filename is not specified, ensure that you have the necessary permis
+sion to write to the default file ddcstrc.tmp.
[download]

At a wild guess, it's trying to write to ~/sqllib/db2dump/db2diag.log, but it could be some other thing..

C.