PL/SQL: cursor already open
尝试打开一个已经打开的游标。每个显式游标必须先关闭才能重新打开。
SELECT sql_text, cursor_type, status FROM v$open_cursor WHERE sid = SYS_CONTEXT('USERENV','SID');SELECT value FROM v$mystat m JOIN v$statname n ON m.statistic# = n.statistic# WHERE n.name = 'opened cursors current';