ORACLE常见问题收集

1.Java代码执行oracle，update和insert语句卡住不动

解决方法：造成这样的情况原因在于你之前执行了update或insert操作但你并没有commit，导致你操作的这条记录被oracle锁住，后面就无法update或insert。

1：可能你是在PLSQL中操作的，commit一下 
2：查询锁定：SELECT s.sid, s.serial# FROM v$locked_object lo, dba_objects ao, v$session s WHERE ao.object_id = lo.object_id AND lo.session_id = s.sid;
　  删除锁定：ALTER system KILL session 'SID,serial'

2.ORACLE插入时间对象

insert into SY_COMM_CONFIG (CONF_ID, S_MTIME )
values('12345',to_char(sysdate,'YYYY-MM-DD HH24:MI:SS')

选择ORACLE里面的系统时间 SELECT SYSDATE FROM DUAL;

3.CASE  WHEN过滤多行数据

  SELECT TLB_ID,
                  TO_CHAR(AUDIT_DATE, 'YYYY-MM-DD HH24:MI:SS') AS AUDIT_DATE,
                  AUDIT_RESULT,
                  (case
                  when AUDIT_PROCESS = '' then
                  '' /*待处理*/
                  when AUDIT_PROCESS in ('', '', '', '', '', '', '', '', '', '', '') then
                  '' /*审核中*/
                  when AUDIT_PROCESS in ('', '') then
                  '' /*合同确认中*/    when AUDIT_PROCESS in
                  ('', '', '', '', '', '', '') then
                  '' /*放款处理中*/    when AUDIT_PROCESS = '' then
                  '' /* 已放款*/    when AUDIT_PROCESS = '' then
                  '' /*已结束*/    else    AUDIT_PROCESS
                  end) as HEAD_PROCESS    from TLB_APPLY_AUDIT_RECORD
                  where 1 = 1    and TLB_ID = :TLB_ID
                  and TLB_TYPE = ''    and AUDIT_RESULT != '-1'
                  ORDER BY AUDIT_DATE DESC ;

4.插入数据，并且插入的数据为两段字符串拼接起来的

拼接符号是||，前面是算随机数，后面是截取号码后四位

 INSERT INTO T_SCRM_DB_APP_USER
                 (LOGIN_NAME, PASSWORD, MOBILE_PHONE, USER_NAME,  USER_ID ,ID)
                  VALUES
           (138171228888, 123456, 138171228888, '刘德华', 420117198910226789,(trunc(dbms_random.value(1000,9999))||substr('', -4))) ;