-79844 Cant create/remove UDT/UDR as no database is specified in the connection

Explanation
Your application created a connection without specifying
a database. The following example establishes a connection and opens
a database named test: url = "jdbc:informix-sqli:myhost:1533/test:" 
+
"informixserver=myserver;user=rdtest;
   password=test";
conn = DriverManager.getConnection(url);

The following
example establishes a connection with no database open: url = "jdbc:informix-sqli:myhost:1533:" 
+
"informixserver=myserver;user=rdtest;
   password=test";
conn = DriverManager.getConnection(url);

User response
To resolve this problem, use the following SQL
statements after the connection is established and before calling the createUDT() or createUDRs() methods: Statement stmt = conn.createStatement();
stmt.executeUpdate("create database test
   ...");

Alternatively, use the following code: stmt.executeUpdate("database test");