You should avoid declaring a cursor inside a PERFORM statement because doing so could impact performance. It could also lead to
unexpected behavior if the opening and closing of the cursor are not defined in the same loop.
Noncompliant code example
PERFORM UNTIL (NOT DA-OK) OR (Y00CIA-CD-RET-PGM = ZERO)
EXEC SQL DECLARE C2 CURSOR FOR
SELECT DEPTNO, DEPTNAME, MGRNO FROM DEPARTMENT WHERE ADMRDEPT = 'A00'
END-EXEC
END-PERFORM.
