1 查询数据库是否存在死锁
SELECT A.OWNER, A.OBJECT_NAME, B.XIDUSN, B.XIDSLOT, B.XIDSQN, B.SESSION_ID,B.ORACLE_USERNAME,
B.OS_USER_NAME,B.PROCESS,B.LOCKED_MODE,C.MACHINE,C.STATUS,C.SERVER,C.PROGRAM,C.SID,C.SERIAL#,C.ACTION,C.MODULE,'ALTER SYSTEM KILL SESSION ''' || C.SID || ',' || C.SERIAL# || ''';'
FROM ALL_OBJECTS A, V$LOCKED_OBJECT B, SYS.GV_$SESSION C
WHERE (A.OBJECT_ID = B.OBJECT_ID)
AND (B.PROCESS = C.PROCESS)
ORDER BY 1, 2;
---如果存在死锁，需判断是否可以杀死(最后一列为解除死锁的SQL语句，使用sqlplus \ as sysdba执行)
