标签云
asm恢复 bbed bootstrap$ dul In Memory kcbzib_kcrsds_1 kccpb_sanity_check_2 kfed MySQL恢复 ORA-00312 ORA-00607 ORA-00704 ORA-01110 ORA-01555 ORA-01578 ORA-08103 ORA-600 2131 ORA-600 2662 ORA-600 2663 ORA-600 3020 ORA-600 4000 ORA-600 4137 ORA-600 4193 ORA-600 4194 ORA-600 16703 ORA-600 kcbzib_kcrsds_1 ORA-600 KCLCHKBLK_4 ORA-15042 ORA-15196 ORACLE 12C oracle dul ORACLE PATCH Oracle Recovery Tools oracle加密恢复 oracle勒索 oracle勒索恢复 oracle异常恢复 Oracle 恢复 ORACLE恢复 ORACLE数据库恢复 oracle 比特币 OSD-04016 YOUR FILES ARE ENCRYPTED 勒索恢复 比特币加密文章分类
- Others (2)
- 中间件 (2)
- WebLogic (2)
- 操作系统 (102)
- 数据库 (1,674)
- DB2 (22)
- MySQL (73)
- Oracle (1,536)
- Data Guard (52)
- EXADATA (8)
- GoldenGate (22)
- ORA-xxxxx (159)
- ORACLE 12C (72)
- ORACLE 18C (6)
- ORACLE 19C (14)
- ORACLE 21C (3)
- Oracle 23ai (7)
- Oracle ASM (67)
- Oracle Bug (8)
- Oracle RAC (52)
- Oracle 安全 (6)
- Oracle 开发 (28)
- Oracle 监听 (28)
- Oracle备份恢复 (562)
- Oracle安装升级 (92)
- Oracle性能优化 (62)
- 专题索引 (5)
- 勒索恢复 (78)
- PostgreSQL (18)
- PostgreSQL恢复 (6)
- SQL Server (27)
- SQL Server恢复 (8)
- TimesTen (7)
- 达梦数据库 (2)
- 生活娱乐 (2)
- 至理名言 (11)
- 虚拟化 (2)
- VMware (2)
- 软件开发 (37)
- Asp.Net (9)
- JavaScript (12)
- PHP (2)
- 小工具 (20)
-
最近发表
- GoldenGate 19安装和打patch
- dd破坏asm磁盘头恢复
- 删除asmlib磁盘导致磁盘组故障恢复
- Kylin Linux 安装19c
- ORA-600 krse_arc_complete.4
- Oracle 19c 202410补丁(RUs+OJVM)
- ntfs MFT损坏(ntfs文件系统故障)导致oracle异常恢复
- .mkp扩展名oracle数据文件加密恢复
- 清空redo,导致ORA-27048: skgfifi: file header information is invalid
- A_H_README_TO_RECOVER勒索恢复
- 通过alert日志分析客户自行对一个数据库恢复的来龙去脉和点评
- ORA-12514: TNS: 监听进程不能解析在连接描述符中给出的SERVICE_NAME
- ORA-01092 ORA-00604 ORA-01558故障处理
- ORA-65088: database open should be retried
- Oracle 19c异常恢复—ORA-01209/ORA-65088
- ORA-600 16703故障再现
- 数据库启动报ORA-27102 OSD-00026 O/S-Error: (OS 1455)
- .[metro777@cock.li].Elbie勒索病毒加密数据库恢复
- 应用连接错误,初始化mysql数据库恢复
- RAC默认服务配置优先节点
标签归档:user$
11g 使用 alter user identified by values password 恢复历史密码
在11.1之前的版本,很多人可能都知道,可以通过alter user identified by values password 来还原oracle 数据库历史密码,但是在11g中出现几个问题:
1. dba_users中无password记录(值为空),这个问题可以通过直接查询user$.password依然有记录
SQL> select password from dba_users where username='SYS'; PASSWORD ------------------------------ SQL> select password from user$ WHERE name='SYS'; PASSWORD ------------------------------ 8A8F025737A9097A
2.在11.1开始user$中的SPARE4有值,从而使得数据库密码区分大小写,参考blog:关于ORACLE 11G密码大小写敏感猜想(USER$.SPARE4)
SQL> select SPARE4 from user$ WHERE name='SYS'; SPARE4 -------------------------------------------------------------------------------- S:C7C81BBE7760B5BBB3973F0971AA36C737BF6DCC4A34FE925CE70B0739BD
现在就存在疑问,在11G版本中,如何来还原Oracle数据库用户历史密码呢?,这里通过试验的方式证明,alter user identified by values后面值可以是user$.password 也可以是user$.SPARE4,只是两者在密码大小写上有区别,具体试验如下:
创建测试用户xifenfei
[oracle@localhost ~]$ ss SQL*Plus: Release 11.2.0.4.0 Production on Fri Apr 10 16:00:03 2015 Copyright (c) 1982, 2013, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SQL> select * from v$version; BANNER -------------------------------------------------------------------------------- Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production PL/SQL Release 11.2.0.4.0 - Production CORE 11.2.0.4.0 Production TNS for Linux: Version 11.2.0.4.0 - Production NLSRTL Version 11.2.0.4.0 - Production SQL> select sysdate "www.xifenfei.com" from dual; www.xifen --------- 10-APR-15 SQL> create user xifenfei identified by oracle; User created. SQL> grant create session to xifenfei; Grant succeeded. SQL> conn xifenfei/oracle Connected. SQL> conn xifenfei/ORACLE ERROR: ORA-01017: invalid username/password; logon denied Warning: You are no longer connected to ORACLE. SQL> conn / as sysdba Connected. SQL> show parameter sec_case_sensitive_logon ; NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ sec_case_sensitive_logon boolean TRUE
这里由于sec_case_sensitive_logon参数默认为true,因此密码区分大小写
修改数据库密码
SQL> select spare4,password from user$ where name='XIFENFEI'; SPARE4 -------------------------------------------------------------------------------- PASSWORD ------------------------------ S:6E34E993900317BBFD6289E4AE619D634AA6AD804C765A3DEE1CCABCC50D 1BA871FA3B1C3F45 SQL> alter user xifenfei identified by xifenfei; User altered. SQL> select spare4,password from user$ where name='XIFENFEI'; SPARE4 -------------------------------------------------------------------------------- PASSWORD ------------------------------ S:A75A184EA2767488E698C443E97CB2473B46A9C80C2C61833BA867CB8B17 1682CAA2339F770F SQL> conn xifenfei/xifenfei Connected. SQL> conn xifenfei/XIFENFEI ERROR: ORA-01017: invalid username/password; logon denied Warning: You are no longer connected to ORACLE. SQL> conn xifenfei/oracle ERROR: ORA-01017: invalid username/password; logon denied
这里把xifenfei用户的密码从oracle修改为xifenfei
尝试values user$.password恢复以前密码
SQL> conn / as sysdba Connected. SQL> alter user xifenfei identified by values '1BA871FA3B1C3F45'; User altered. SQL> select spare4,password from user$ where name='XIFENFEI'; SPARE4 -------------------------------------------------------------------------------- PASSWORD ------------------------------ 1BA871FA3B1C3F45 SQL> conn xifenfei/oracle Connected. SQL> conn xifenfei/ORACLE Connected. SQL> conn xifenfei/xifenfei ERROR: ORA-01017: invalid username/password; logon denied Warning: You are no longer connected to ORACLE.
通过该方式还原上次密码后,发现user$.SPARE4为空,也就使得Oracle不再区分密码大小写.
尝试values user$.spare4恢复以前密码
SQL> conn / as sysdba Connected. SQL> alter user xifenfei identified by xifenfei; User altered. SQL> select spare4,password from user$ where name='XIFENFEI'; SPARE4 -------------------------------------------------------------------------------- PASSWORD ------------------------------ S:48A11864AD633E904126C20E8C374A4AA45D87BB005D35AD2B10766E8E11 1682CAA2339F770F SQL> conn xifenfei/xifenfei Connected. SQL> conn xifenfei/oracle ERROR: ORA-01017: invalid username/password; logon denied Warning: You are no longer connected to ORACLE. SQL> conn xifenfei/XIFENFEI ERROR: ORA-01017: invalid username/password; logon denied SQL> alter user xifenfei identified by values '6E34E993900317BBFD6289E4AE619D634AA6AD804C765A3DEE1CCABCC50D'; SP2-0640: Not connected SQL> conn / as sysdba Connected. SQL> alter user xifenfei identified by values '6E34E993900317BBFD6289E4AE619D634AA6AD804C765A3DEE1CCABCC50D'; alter user xifenfei identified by values '6E34E993900317BBFD6289E4AE619D634AA6AD804C765A3DEE1CCABCC50D' * ERROR at line 1: ORA-00600: internal error code, arguments: [kzsviver:2], [], [], [], [], [], [], [], [], [], [], [] --少写了S:,直接报ORA-600错误,怀疑S:是spare4列的某种标识 SQL> SQL> SQL> SQL> alter user xifenfei identified by values 'S:6E34E993900317BBFD6289E4AE619D634AA6AD804C765A3DEE1CCABCC50D'; User altered. SQL> select spare4,password from user$ where name='XIFENFEI'; SPARE4 -------------------------------------------------------------------------------- PASSWORD ------------------------------ S:6E34E993900317BBFD6289E4AE619D634AA6AD804C765A3DEE1CCABCC50D SQL> conn xifenfei/oracle Connected. SQL> conn xifenfei/ORACLE ERROR: ORA-01017: invalid username/password; logon denied Warning: You are no longer connected to ORACLE. SQL> conn xifenfei/xifenfei ERROR: ORA-01017: invalid username/password; logon denied
这里发现通过values user$.spare4恢复以前密码后,user$.password列为空,但是密码依旧区分大小写。这里可以看出来,user$.password项以后可能取消掉,为了兼容性,因此Oracle在后续版本中依旧保留.
关于oracle 11G中恢复以前密码操作总结
1. 通过values user$.password恢复以前密码后,不区分大小写
2. 通过values user$.spare4恢复以前密码后,区分大小写
3. 目前两种方式都可以实现11g恢复以前密码,但是推荐使用user$.spare4值修改