OCP培训笔记-flashback
2012-03-19 21:26
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FlashBack
Keywords:
SQL> conn scott/tiger
Connected.
SQL> select * from tab;
TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
BIN$u4X8FW5uuvfgQBCsWwoQFA==$0 TABLE >>>here,BIN$*** is the table name (droped)
BIN$u4Z5O4T/UwfgQBCsWwoQEw==$0 TABLE
BIN$u4ZHfRkVsYHgQBCsWwoNrA==$0 TABLE
BONUS TABLE
DEPT TABLE
EMP TABLE
SALGRADE TABLE
WB2 TABLE
8 rows selected.
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
EMP BIN$u4X8FW5uuvfgQBCsWwoQFA==$0 TABLE 2012-03-18:11:20:41
EMP BIN$u4Z5O4T/UwfgQBCsWwoQEw==$0 TABLE 2012-03-18:10:44:05
EMP BIN$u4ZHfRkVsYHgQBCsWwoNrA==$0 TABLE 2012-03-18:10:30:11
SQL> purge recyclebin ; >>>purge the recyclebin
Recyclebin purged.
SQL> show recyclebin;
SQL> select * from tab;
TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
BONUS TABLE
DEPT TABLE
EMP TABLE
SALGRADE TABLE
WB2 TABLE
SQL> drop table emp;
Table dropped.
SQL> desc emp
ERROR:
ORA-04043: object emp does not exist
SQL> select * from emp;
select * from emp
*
ERROR at line 1:
ORA-00942: table or view does not exist
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
EMP BIN$u4fZJelpzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:34:05
SQL> ----emp ----users tablespace
SQL> select * from emp; >>>the table emp was dropped, no contacts
select * from emp
*
ERROR at line 1:
ORA-00942: table or view does not exist
SQL> flashback table emp to before drop; >>>flashebacked
Flashback complete.
SQL> show recyclebin;
SQL> select * from emp;
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7369 SMITH CLERK 7902 17-DEC-80 800
20
7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300
30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500
30
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7566 JONES MANAGER 7839 02-APR-81 2975
20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400
30
7698 BLAKE MANAGER 7839 01-MAY-81 2850
30
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7782 CLARK MANAGER 7839 09-JUN-81 2450
10
7788 SCOTT ANALYST 7566 19-APR-87 3000
20
7839 KING PRESIDENT 17-NOV-81 5000
10
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0
30
7876 ADAMS CLERK 7788 23-MAY-87 1100
20
7900 JAMES CLERK 7698 03-DEC-81 950
30
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7902 FORD ANALYST 7566 03-DEC-81 3000
20
7934 MILLER CLERK 7782 23-JAN-82 1300
10
14 rows selected.
SQL> show user
USER is "SCOTT"
SQL> create table test as select * from emp;
Table created.
SQL> create index idx_o on test(empno); >>>create a index to test drop/flashback
Index created.
SQL> desc test
Name Null? Type
----------------------------------------- -------- ----------------------------
EMPNO NUMBER(4)
ENAME VARCHAR2(10)
JOB VARCHAR2(9)
MGR NUMBER(4)
HIREDATE DATE
SAL NUMBER(7,2)
COMM NUMBER(7,2)
DEPTNO NUMBER(2)
SQL> drop table test;
Table dropped.
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
TEST BIN$u4fZJelrzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:39:14
SQL> desc test
Name Null? Type
----------------------------------------- -------- ----------------------------
EMPNO NUMBER(4)
ENAME VARCHAR2(10)
JOB VARCHAR2(9)
MGR NUMBER(4)
HIREDATE DATE
SAL NUMBER(7,2)
COMM NUMBER(7,2)
DEPTNO NUMBER(2)
SQL> drop table test;
Table dropped.
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
TEST BIN$u4fZJeltzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:44:37
SQL> desc test;
ERROR:
ORA-04043: object test does not exist
SQL> create table test (a int); >>>re create a table named test,which used to show the table droped in recyclebin is a logical name
Table created.
SQL> desc test;
Name Null? Type
----------------------------------------- -------- ----------------------------
A NUMBER(38)
SQL> drop table test;
Table dropped.
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
TEST BIN$u4fZJeluzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:45:00 >>>2 table named TEST,just rename
TEST BIN$u4fZJeltzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:44:37 it in tablespace
SQL> create table test (b int);
Table created.
SQL> desc test
Name Null? Type
----------------------------------------- -------- ----------------------------
B NUMBER(38)
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
TEST BIN$u4fZJeluzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:45:00
TEST BIN$u4fZJeltzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:44:37
SQL> desc test
Name Null? Type
----------------------------------------- -------- ----------------------------
B NUMBER(38)
SQL> flashback table test to before drop; >>>if the test currently exist,flashback failed.but can rename it
flashback table test to before drop
*
ERROR at line 1:
ORA-38312: original name is used by an existing object
SQL> flashback table test to before drop rename to test1;
Flashback complete.
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
TEST BIN$u4fZJeltzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:44:37
SQL> flashback table test to before drop rename to test2;
Flashback complete.
SQL> show recyclebin;
SQL> desc test2
Name Null? Type
----------------------------------------- -------- ----------------------------
EMPNO NUMBER(4)
ENAME VARCHAR2(10)
JOB VARCHAR2(9)
MGR NUMBER(4)
HIREDATE DATE
SAL NUMBER(7,2)
COMM NUMBER(7,2)
DEPTNO NUMBER(2)
SQL> desc test1
Name Null? Type
----------------------------------------- -------- ----------------------------
A NUMBER(38)
SQL> flashback table "BIN$u4fZJeltzMTgQBCsWwoRTA==$0" to before drop;
SQL> bill
SQL> drop table bill;
SQL> create table bill (,,,,,,,,,,,,)
SQL> rename to bill12
SQL> insert into bill select * form bill12
SQL> drop table emp;
Table dropped.
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
EMP BIN$u4fZJelxzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:53:06
SQL> drop table dept purge; >>> drop permanent
Table dropped.
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
EMP BIN$u4fZJelxzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:53:06
SQL> 10g 11g
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@db logicalbak]$ rlwrap sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Sun Mar 18 13:58:49 2012
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> conn scott/tiger >>>the user SCOTT had been deleted
ERROR:
ORA-01017: invalid username/password; logon denied
Warning: You are no longer connected to ORACLE.
SQL> @?/rdbms/admin/utlsampl.sql >>>rebuild the user SCOTT
[oracle@db logicalbak]$ rlwrap sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Sun Mar 18 13:59:17 2012
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> @?/rdbms/admin/utlsampl.sql
SQL> exit
[oracle@db logicalbak]$ rlwrap sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Sun Mar 18 13:59:43 2012
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> @utlsampl.sql
SP2-0310: unable to open file "utlsampl.sql"
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@db logicalbak]$ cd /oracle/product/db_1/rdbms/admin/
[oracle@db admin]$ rlwrap sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Sun Mar 18 14:00:07 2012
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> @utlsampl.sql
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@db admin]$ rlwrap sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Sun Mar 18 14:00:19 2012
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> conn scott/tiger
Connected.
SQL> show user
USER is "SCOTT"
SQL> drop table emp;
Table dropped.
SQL> drop table dept;
Table dropped.
SQL> show parameter recyclebin
ORA-00942: table or view does not exist
SQL> show parameter recycle
ORA-00942: table or view does not exist
SQL> show user
USER is "SCOTT"
SQL> conn sys as sysdba
Enter password:
Connected.
SQL> grant select any table to u1;
Grant succeeded.
SQL> @utlsampl.sql
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> delete from emp where deptno=10; >>>there is an experiment,
3 rows deleted.
SQL> select * from emp;
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7369 SMITH CLERK 7902 17-DEC-80 800
20
7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300
30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500
30
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7566 JONES MANAGER 7839 02-APR-81 2975
20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400
30
7698 BLAKE MANAGER 7839 01-MAY-81 2850
30
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7788 SCOTT ANALYST 7566 19-APR-87 3000
20
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0
30
7876 ADAMS CLERK 7788 23-MAY-87 1100
20
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7900 JAMES CLERK 7698 03-DEC-81 950
30
7902 FORD ANALYST 7566 03-DEC-81 3000
20
11 rows selected.
SQL> commit;
Commit complete.
SQL> select count(*) from emp;
COUNT(*)
----------
11
SQL> select count(*) from emp as of scn 1427502;
COUNT(*)
----------
14
SQL> show parameter fla
ORA-00942: table or view does not exist
SQL> select count(*) from emp as of scn 1427582; >>>the scn is the index by database ,it will change now and then
COUNT(*)
----------
11
SQL> select count(*) from emp as of scn 1427542; >>>if query by a former SZN , the count haven’t been delete
COUNT(*)
----------
14
SQL> flashback table emp to scn 1427542;
flashback table emp to scn 1427542
*
ERROR at line 1:
ORA-08189: cannot flashback the table because row movement is not enabled
SQL> alter table emp enable row movement; >>>default, row movement is not enabled, should alter it!
Table altered.
SQL> select current_scn from v$database; >>>query the szn from v$databse
CURRENT_SCN
-----------
1138138
SQL> flashback table emp to scn 1427542;s
Flashback complete.
SQL> select count(*) from emp;
COUNT(*)
----------
14
Keywords:
SQL> conn scott/tiger
Connected.
SQL> select * from tab;
TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
BIN$u4X8FW5uuvfgQBCsWwoQFA==$0 TABLE >>>here,BIN$*** is the table name (droped)
BIN$u4Z5O4T/UwfgQBCsWwoQEw==$0 TABLE
BIN$u4ZHfRkVsYHgQBCsWwoNrA==$0 TABLE
BONUS TABLE
DEPT TABLE
EMP TABLE
SALGRADE TABLE
WB2 TABLE
8 rows selected.
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
EMP BIN$u4X8FW5uuvfgQBCsWwoQFA==$0 TABLE 2012-03-18:11:20:41
EMP BIN$u4Z5O4T/UwfgQBCsWwoQEw==$0 TABLE 2012-03-18:10:44:05
EMP BIN$u4ZHfRkVsYHgQBCsWwoNrA==$0 TABLE 2012-03-18:10:30:11
SQL> purge recyclebin ; >>>purge the recyclebin
Recyclebin purged.
SQL> show recyclebin;
SQL> select * from tab;
TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
BONUS TABLE
DEPT TABLE
EMP TABLE
SALGRADE TABLE
WB2 TABLE
SQL> drop table emp;
Table dropped.
SQL> desc emp
ERROR:
ORA-04043: object emp does not exist
SQL> select * from emp;
select * from emp
*
ERROR at line 1:
ORA-00942: table or view does not exist
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
EMP BIN$u4fZJelpzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:34:05
SQL> ----emp ----users tablespace
SQL> select * from emp; >>>the table emp was dropped, no contacts
select * from emp
*
ERROR at line 1:
ORA-00942: table or view does not exist
SQL> flashback table emp to before drop; >>>flashebacked
Flashback complete.
SQL> show recyclebin;
SQL> select * from emp;
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7369 SMITH CLERK 7902 17-DEC-80 800
20
7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300
30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500
30
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7566 JONES MANAGER 7839 02-APR-81 2975
20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400
30
7698 BLAKE MANAGER 7839 01-MAY-81 2850
30
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7782 CLARK MANAGER 7839 09-JUN-81 2450
10
7788 SCOTT ANALYST 7566 19-APR-87 3000
20
7839 KING PRESIDENT 17-NOV-81 5000
10
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0
30
7876 ADAMS CLERK 7788 23-MAY-87 1100
20
7900 JAMES CLERK 7698 03-DEC-81 950
30
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7902 FORD ANALYST 7566 03-DEC-81 3000
20
7934 MILLER CLERK 7782 23-JAN-82 1300
10
14 rows selected.
SQL> show user
USER is "SCOTT"
SQL> create table test as select * from emp;
Table created.
SQL> create index idx_o on test(empno); >>>create a index to test drop/flashback
Index created.
SQL> desc test
Name Null? Type
----------------------------------------- -------- ----------------------------
EMPNO NUMBER(4)
ENAME VARCHAR2(10)
JOB VARCHAR2(9)
MGR NUMBER(4)
HIREDATE DATE
SAL NUMBER(7,2)
COMM NUMBER(7,2)
DEPTNO NUMBER(2)
SQL> drop table test;
Table dropped.
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
TEST BIN$u4fZJelrzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:39:14
SQL> desc test
Name Null? Type
----------------------------------------- -------- ----------------------------
EMPNO NUMBER(4)
ENAME VARCHAR2(10)
JOB VARCHAR2(9)
MGR NUMBER(4)
HIREDATE DATE
SAL NUMBER(7,2)
COMM NUMBER(7,2)
DEPTNO NUMBER(2)
SQL> drop table test;
Table dropped.
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
TEST BIN$u4fZJeltzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:44:37
SQL> desc test;
ERROR:
ORA-04043: object test does not exist
SQL> create table test (a int); >>>re create a table named test,which used to show the table droped in recyclebin is a logical name
Table created.
SQL> desc test;
Name Null? Type
----------------------------------------- -------- ----------------------------
A NUMBER(38)
SQL> drop table test;
Table dropped.
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
TEST BIN$u4fZJeluzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:45:00 >>>2 table named TEST,just rename
TEST BIN$u4fZJeltzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:44:37 it in tablespace
SQL> create table test (b int);
Table created.
SQL> desc test
Name Null? Type
----------------------------------------- -------- ----------------------------
B NUMBER(38)
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
TEST BIN$u4fZJeluzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:45:00
TEST BIN$u4fZJeltzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:44:37
SQL> desc test
Name Null? Type
----------------------------------------- -------- ----------------------------
B NUMBER(38)
SQL> flashback table test to before drop; >>>if the test currently exist,flashback failed.but can rename it
flashback table test to before drop
*
ERROR at line 1:
ORA-38312: original name is used by an existing object
SQL> flashback table test to before drop rename to test1;
Flashback complete.
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
TEST BIN$u4fZJeltzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:44:37
SQL> flashback table test to before drop rename to test2;
Flashback complete.
SQL> show recyclebin;
SQL> desc test2
Name Null? Type
----------------------------------------- -------- ----------------------------
EMPNO NUMBER(4)
ENAME VARCHAR2(10)
JOB VARCHAR2(9)
MGR NUMBER(4)
HIREDATE DATE
SAL NUMBER(7,2)
COMM NUMBER(7,2)
DEPTNO NUMBER(2)
SQL> desc test1
Name Null? Type
----------------------------------------- -------- ----------------------------
A NUMBER(38)
SQL> flashback table "BIN$u4fZJeltzMTgQBCsWwoRTA==$0" to before drop;
SQL> bill
SQL> drop table bill;
SQL> create table bill (,,,,,,,,,,,,)
SQL> rename to bill12
SQL> insert into bill select * form bill12
SQL> drop table emp;
Table dropped.
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
EMP BIN$u4fZJelxzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:53:06
SQL> drop table dept purge; >>> drop permanent
Table dropped.
SQL> show recyclebin;
ORIGINAL NAME RECYCLEBIN NAME OBJECT TYPE DROP TIME
---------------- ------------------------------ ------------ -------------------
EMP BIN$u4fZJelxzMTgQBCsWwoRTA==$0 TABLE 2012-03-18:13:53:06
SQL> 10g 11g
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@db logicalbak]$ rlwrap sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Sun Mar 18 13:58:49 2012
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> conn scott/tiger >>>the user SCOTT had been deleted
ERROR:
ORA-01017: invalid username/password; logon denied
Warning: You are no longer connected to ORACLE.
SQL> @?/rdbms/admin/utlsampl.sql >>>rebuild the user SCOTT
[oracle@db logicalbak]$ rlwrap sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Sun Mar 18 13:59:17 2012
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> @?/rdbms/admin/utlsampl.sql
SQL> exit
[oracle@db logicalbak]$ rlwrap sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Sun Mar 18 13:59:43 2012
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> @utlsampl.sql
SP2-0310: unable to open file "utlsampl.sql"
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@db logicalbak]$ cd /oracle/product/db_1/rdbms/admin/
[oracle@db admin]$ rlwrap sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Sun Mar 18 14:00:07 2012
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> @utlsampl.sql
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@db admin]$ rlwrap sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Sun Mar 18 14:00:19 2012
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> conn scott/tiger
Connected.
SQL> show user
USER is "SCOTT"
SQL> drop table emp;
Table dropped.
SQL> drop table dept;
Table dropped.
SQL> show parameter recyclebin
ORA-00942: table or view does not exist
SQL> show parameter recycle
ORA-00942: table or view does not exist
SQL> show user
USER is "SCOTT"
SQL> conn sys as sysdba
Enter password:
Connected.
SQL> grant select any table to u1;
Grant succeeded.
SQL> @utlsampl.sql
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> delete from emp where deptno=10; >>>there is an experiment,
3 rows deleted.
SQL> select * from emp;
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7369 SMITH CLERK 7902 17-DEC-80 800
20
7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300
30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500
30
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7566 JONES MANAGER 7839 02-APR-81 2975
20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400
30
7698 BLAKE MANAGER 7839 01-MAY-81 2850
30
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7788 SCOTT ANALYST 7566 19-APR-87 3000
20
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0
30
7876 ADAMS CLERK 7788 23-MAY-87 1100
20
EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- --------- ---------- ----------
DEPTNO
----------
7900 JAMES CLERK 7698 03-DEC-81 950
30
7902 FORD ANALYST 7566 03-DEC-81 3000
20
11 rows selected.
SQL> commit;
Commit complete.
SQL> select count(*) from emp;
COUNT(*)
----------
11
SQL> select count(*) from emp as of scn 1427502;
COUNT(*)
----------
14
SQL> show parameter fla
ORA-00942: table or view does not exist
SQL> select count(*) from emp as of scn 1427582; >>>the scn is the index by database ,it will change now and then
COUNT(*)
----------
11
SQL> select count(*) from emp as of scn 1427542; >>>if query by a former SZN , the count haven’t been delete
COUNT(*)
----------
14
SQL> flashback table emp to scn 1427542;
flashback table emp to scn 1427542
*
ERROR at line 1:
ORA-08189: cannot flashback the table because row movement is not enabled
SQL> alter table emp enable row movement; >>>default, row movement is not enabled, should alter it!
Table altered.
SQL> select current_scn from v$database; >>>query the szn from v$databse
CURRENT_SCN
-----------
1138138
SQL> flashback table emp to scn 1427542;s
Flashback complete.
SQL> select count(*) from emp;
COUNT(*)
----------
14
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