recyclebin 学习
recyclebin 学习
views：
user_recyclebin recyclebin
dba_recyclebin
SELECT object_name, original_name FROM dba_recyclebin
WHERE owner = 'HR';
show recyclebin ----------只能普通用户使用
SELECT * FROM "BIN$yrMKlZaVMhfgNAgAIMenRA==$0";
create table xxx as select * from "BIN$yrMKlZaVMhfgNAgAIMenRA==$0";
貌似可以重建已被drop的表
清除对象：
hr.int_admin_emp ----》 BIN$jsleilx392mk2=293$0
1. PURGE TABLE BIN$jsleilx392mk2=293$0;
2. PURGE TABLE int_admin_emp（ORIGINAL_NAME）;
3. PURGE TABLESPACE example;------清除位于某tbs中的所有表
4. PURGE TABLESPACE example USER oe;
----清除所有位于某tbs，且属于mouuser的所有表
5. PURGE RECYCLEBIN; ----清除当前用户所属对象
6. purge dba_recyclebin ; ----sysdba权限用户清空recyclebin
恢复删除的对象：
SELECT object_name, original_name, createtime FROM recyclebin;
OBJECT_NAME ORIGINAL_NAME CREATETIME
------------------------------ --------------- -------------------BIN $yrMKlZaLMhfgNAgAIMenRA==$0 INT2_ADMIN_EMP 2006-02-05:21:05:52
BIN$yrMKlZaVMhfgNAgAIMenRA==$0 INT2_ADMIN_EMP 2006-02-05:21:25:13
BIN$yrMKlZaQMhfgNAgAIMenRA==$0 INT2_ADMIN_EMP 2006-02-05:22:05:53
FLASHBACK TABLE "BIN$yrMKlZaVMhfgNAgAIMenRA==$0" TO BEFORE DROP;
flashback table hr.EMP_1 to before drop;
恢复删除的依赖对象：
1、确定原来的对象名
SELECT OBJECT_NAME, ORIGINAL_NAME, TYPE FROM RECYCLEBIN;
OBJECT_NAME ORIGINAL_NAME TYPE
------------------------------ ------------------------- --------
BIN$DBo9UChtZSbgQFeMiAdCcQ==$0 JHIST_JOB_IX INDEX
BIN$DBo9UChuZSbgQFeMiAdCcQ==$0 JHIST_EMPLOYEE_IX INDEX
BIN$DBo9UChvZSbgQFeMiAdCcQ==$0 JHIST_DEPARTMENT_IX INDEX
BIN$DBo9UChwZSbgQFeMiAdCcQ==$0 JHIST_EMP_ID_ST_DATE_PK INDEX
BIN$DBo9UChxZSbgQFeMiAdCcQ==$0 JOB_HISTORY TABLE
2、查找已恢复的表的相关index
SELECT INDEX_NAME FROM USER_INDEXES WHERE TABLE_NAME = 'JOB_HISTORY';
INDEX_NAME
------------------------------
BIN$DBo9UChwZSbgQFeMiAdCcQ==$0
BIN$DBo9UChtZSbgQFeMiAdCcQ==$0
BIN$DBo9UChuZSbgQFeMiAdCcQ==$0
BIN$DBo9UChvZSbgQFeMiAdCcQ==$0
3、重命名index
ALTER INDEX "BIN$DBo9UChtZSbgQFeMiAdCcQ==$0" RENAME TO JHIST_JOB_IX;
ALTER INDEX "BIN$DBo9UChuZSbgQFeMiAdCcQ==$0" RENAME TO JHIST_EMPLOYEE_IX;