I. Questions:
Dbvisualizer: SQLCODE=-551, SQLSTATE=42501, SQLERRMC= user name; SELECT; The name of the table
 
Use software
Dbvisualizer software
 
Iii. Solutions (Windows system) :
Db2 Grant DBADM on Database to User user name
 
Reprint address: http://www.bubuko.com/infodetail-3002569.html
Reprint address 2:https://www.cnblogs.com/clfonly1/p/10613487.html