2019年3月 – Database SOS

利用VNCR修复CVE-2012-1675漏洞

标题：利用VNCR修复CVE-2012-1675漏洞

随着对安全的重视,TNS Listener远程数据投毒漏洞(CVE-2012-1675)被很多单位要求进行整改,而且级别是高危

如果是11.2.0.4之前版本,特别是在rac环境中,如果要整改该问题相对比较麻烦,需要通过配置Oracle wallet来实现,配置比较复杂,而且还要重启实例,影响比较大,具体参考:Using Class of Secure Transport (COST) to Restrict Instance Registration in Oracle RAC (Doc ID 1340831.1),对于单机环境直接参考以前文章:Oracle Database Server ‘TNS Listener’远程数据投毒漏洞(CVE-2012-1675)的解决方案.从11.2.0.4开始Oracle引入了Valid Node Checking For Registration (VNCR)新特性,可以通过简单的配置即可完成该漏洞修复
在listener.ora文件中增加(grid/oracle用户)

VALID_NODE_CHECKING_REGISTRATION_LISTENER=ON
VALID_NODE_CHECKING_REGISTRATION_LISTENER_SCAN1=ON
REGISTRATION_INVITED_NODES_LISTENER_SCAN1=(hisdb1,hisdb2)

重启监听

LSNRCTL>set current_listener listener_name
LSNRCTL>stop
LSNRCTL>start

验证是否生效
1.在远程机器尝试远程注册

alter system set remote_listener='(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.115.15)(PORT=1521))' scope=memory;

2.观察监听日志
VNCR

类似这样证明已经生效.

补充说明

VALID_NODE_CHECKING_REGISTRATION_listener_name
Values:
OFF/0 - Disable VNCR//禁用VNCR，此功能不会对注册过来的service进行check;
ON/1/LOCAL - The default. Enable VNCR. All local machine IPs can register.
启用VNCR,默认只允许本机的所有IP的服务注册到本监听,可通过REGISTRATION_INVITED_NODES参数添加其他有必要的服务器;
SUBNET/2 - All machines in the subnet are allowed registration.//指定子网内的服务器可以注册过来
REGISTRATION_INVITED_NODES_listener-name
控制允许链接过来的节点，可以通过IP地址/主机名/网段来指定
Values are valid IPs, valid hosts, a subnet using CIDR notation (for ip4/6), or wildcard (*) for ipv4.
For example:REGISTRATION_INVITED_NODES_Listener=(net-vm1, 127.98.45.209, 127.42.5.*)
Note
that when an INVITED list is set, it will automatically include the
machine's local IP in the list. There is no need to include it.
--11.2.0.4和12c不一样之处
在12.1 RAC数据库上，listener的参数VALID_NODE_CHECKING_REGISTRATION_listener_name默认设置为SUBNET / 2，
即子网中的所有计算机都允许注册.所以12c默认不能解决CVE-2012-1675漏洞

参考文档
Valid Node Checking For Registration (VNCR) (Doc ID 1600630.1)
How to Enable VNCR on RAC Database to Register only Local Instances (Doc ID 1914282.1)

12C数据库遭遇ORA-600 16703

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标题：12C数据库遭遇ORA-600 16703

关于tab$异常的问题,我们在10G(10g数据库遭遇ORA-600 16703),11G(警告：互联网中有oracle介质被注入恶意程序导致—ORA-600 16703)中有发现,近期在12C版本中也发现该问题.再次提醒请注意检查安装介质的md5值和现在运行的库中是否有相关恶意程序
数据库版本

alert日志报错

************************************************************
Warning: The SCN headroom for this database is only 45 days!
************************************************************
************************************************************
Warning: The SCN headroom for this database is only 45 days!
************************************************************
Picked broadcast on commit scheme to generate SCNs
Fri Jan 25 11:34:55 2019
Starting background process TMON
Fri Jan 25 11:34:55 2019
TMON started with pid=104, OS id=47282
Fri Jan 25 11:34:55 2019
Thread 1 advanced to log sequence 11942 (thread open)
Thread 1 opened at log sequence 11942
Current log# 5 seq# 11942 mem# 0: +DATA/xifenfei/ONLINELOG/redo01_01.log
Successful open of redo thread 1
Fri Jan 25 11:34:55 2019
MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set
Fri Jan 25 11:34:55 2019
Network Resource Management enabled for Process LG00 (pid 451491) for Exadata I/O
Fri Jan 25 11:34:55 2019
SMON: enabling cache recovery
Errors in file /u01/oracle/app/oracle/diag/rdbms/xifenfei/xifenfei1/trace/xifenfei1_ora_46443.trc (incident=394486):
ORA-00600: internal error code, arguments: [16703], [1403], [20], [], [], [], [], [], [], [], [], []
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Fri Jan 25 11:34:56 2019
Errors in file /u01/oracle/app/oracle/diag/rdbms/xifenfei/xifenfei1/trace/xifenfei1_ora_46443.trc:
ORA-00704: bootstrap process failure
ORA-00600: internal error code, arguments: [16703], [1403], [20], [], [], [], [], [], [], [], [], []
Fri Jan 25 11:34:56 2019
Errors in file /u01/oracle/app/oracle/diag/rdbms/xifenfei/xifenfei1/trace/xifenfei1_ora_46443.trc:
ORA-00704: bootstrap process failure
ORA-00704: bootstrap process failure
ORA-00600: internal error code, arguments: [16703], [1403], [20], [], [], [], [], [], [], [], [], []
Fri Jan 25 11:34:56 2019
Errors in file /u01/oracle/app/oracle/diag/rdbms/xifenfei/xifenfei1/trace/xifenfei1_ora_46443.trc:
ORA-00704: bootstrap process failure
ORA-00704: bootstrap process failure
ORA-00600: internal error code, arguments: [16703], [1403], [20], [], [], [], [], [], [], [], [], []
Fri Jan 25 11:34:56 2019
Error 704 happened during db open, shutting down database
USER (ospid: 46443): terminating the instance due to error 704
Fri Jan 25 11:34:57 2019
Instance terminated by USER, pid = 46443

处理思路基本上和其他两个版本一样,都是对tab$进行修复,然后直接open数据库,但是在这次的恢复中遇到ORA-00600 kdfReserveSingle_1错误
ORA-600 kdfReserveSingle_1

SQL> alter database open ;
alter database open
*
ERROR at line 1:
ORA-01092: ORACLE instance terminated. Disconnection forced
ORA-00600: internal error code, arguments: [kdfReserveSingle_1], [0], [65280],
[], [], [], [], [], [], [], [], []
Process ID: 319852
Session ID: 2401 Serial number: 24555
---alert日志
Starting background process TMON
Fri Jan 25 20:51:41 2019
TMON started with pid=94, OS id=322554
Fri Jan 25 20:51:41 2019
Thread 1 advanced to log sequence 11943 (thread open)
Thread 1 opened at log sequence 11943
Current log# 6 seq# 11943 mem# 0: +DATA/xifenfei/ONLINELOG/redo02_01.log
Successful open of redo thread 1
Fri Jan 25 20:51:41 2019
MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set
Fri Jan 25 20:51:41 2019
Network Resource Management enabled for Process LG00 (pid 319754) for Exadata I/O
Fri Jan 25 20:51:41 2019
SMON: enabling cache recovery
Fri Jan 25 20:51:41 2019
[319852] Successfully onlined Undo Tablespace 2.
Undo initialization finished serial:0 start:88159754 end:88160264 diff:510 ms (0.5 seconds)
Verifying minimum file header compatibility (11g) for tablespace encryption..
Verifying 11g file header compatibility for tablespace encryption completed
Fri Jan 25 20:51:41 2019
SMON: enabling tx recovery
Fri Jan 25 20:51:41 2019
Database Characterset is ZHS16GBK
Errors in file /u01/oracle/app/oracle/diag/rdbms/xifenfei/xifenfei1/trace/xifenfei1_ora_319852.trc (incident=466446):
ORA-00600: internal error code, arguments: [kdfReserveSingle_1], [0], [65280], [], [], [], [], [], [], [], [], []
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Fri Jan 25 20:51:42 2019
Errors in file /u01/oracle/app/oracle/diag/rdbms/xifenfei/xifenfei1/trace/xifenfei1_ora_319852.trc:
ORA-00600: internal error code, arguments: [kdfReserveSingle_1], [0], [65280], [], [], [], [], [], [], [], [], []
Fri Jan 25 20:51:42 2019
Errors in file /u01/oracle/app/oracle/diag/rdbms/xifenfei/xifenfei1/trace/xifenfei1_ora_319852.trc:
ORA-00600: internal error code, arguments: [kdfReserveSingle_1], [0], [65280], [], [], [], [], [], [], [], [], []
Error 600 happened during db open, shutting down database
USER (ospid: 319852): terminating the instance due to error 600
Fri Jan 25 20:51:43 2019
Instance terminated by USER, pid = 319852
ORA-1092 signalled during: alter database open…
opiodr aborting process unknown ospid (319852) as a result of ORA-1092
Fri Jan 25 20:51:49 2019
ORA-1092 : opitsk aborting process

这个错误主要是由于12c的tab$和以前版本比有一些特殊,导致开始恢复不全,通过继续修复tab$之后数据库正常open.
相关文章汇总
tab$恢复错误汇总
 12C数据库遭遇ORA-600 16703
10G数据库遭遇ORA-600 16703
ORA-600 16703故障解析—tab$表被清空
 警告：互联网中有oracle介质被注入恶意程序导致—ORA-600 16703

SCN Compatibility问题汇总-2019年6月23日

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标题：SCN Compatibility问题汇总-2019年6月23日

最近有不少朋友咨询关于2019年6月23日之前数据库scn，数据库是否要升级或者打补丁等问题，这里对相关问题做一个汇总。
1. 是否一定要升级或者打补丁
不一定，以下几种情况可以不用处理
1) 数据库版本11.1.0.7.20+ /11.2.0.3.9+ /11.2.0.4+版本已经包含了该补丁，无需处理
2) 数据库版本全部低于1)中数据库版本
3) 你的数据库环境中不存在1和2中数据库dblink访问
4) 你的数据库环境中有1和2中的数据库dblink访问,但是通过通过dbms_scn设置,不让1中的数据库版本scn compatibility改变(都保持为1)

2. 到了2019年6月23日之后,数据库的scn发生什么改变
简单的说就是数据库每秒可以使用的scn变大了,距离天花板的scn更加大,出现数据库scn用完的概率大大降低

--compat            -- SCN compatibility value
--headroom_in_scn   -- Difference between current SCN and RSL
--headroom_in_sec   -- number of seconds it would take to reachRSL
SQL> set serveroutput on ;
SQL>  declare
  2   rsl number;
  3   headroom_in_scn number;
  4   headroom_in_sec number;
  5   cur_scn_compat number;
  6   max_scn_compat number;
  7   begin
  8   dbms_scn.GetCurrentSCNParams(rsl,headroom_in_scn,headroom_in_sec,cur_scn_compat,max_scn_compat);
  9   dbms_output.put_line('rsl=' || rsl);
 10   dbms_output.put_line('headroom_in_scn=' || headroom_in_scn);
 11   dbms_output.put_line('headroom_in_sec=' || headroom_in_sec);
 12   dbms_output.put_line('cur_scn_compat=' || cur_scn_compat);
 13   dbms_output.put_line('max_scn_compat=' || max_scn_compat);
 14   end;
 15   /
rsl=16424869609472
headroom_in_scn=16424867538319
headroom_in_sec=1002494356
cur_scn_compat=1
max_scn_compat=3
PL/SQL procedure successfully completed.
SQL> Alter Database Set SCN Compatibility 2;
Database altered.
SQL>  declare
  2   rsl number;
  3   headroom_in_scn number;
  4   headroom_in_sec number;
  5   cur_scn_compat number;
  6   max_scn_compat number;
  7   begin
  8   dbms_scn.GetCurrentSCNParams(rsl,headroom_in_scn,headroom_in_sec,cur_scn_compat,max_scn_compat);
  9   dbms_output.put_line('rsl=' || rsl);
 10   dbms_output.put_line('headroom_in_scn=' || headroom_in_scn);
 11   dbms_output.put_line('headroom_in_sec=' || headroom_in_sec);
 12   dbms_output.put_line('cur_scn_compat=' || cur_scn_compat);
 13   dbms_output.put_line('max_scn_compat=' || max_scn_compat);
 14   end;
 15   /
rsl=21792299122688
headroom_in_scn=21792297051479
headroom_in_sec=665048127
cur_scn_compat=2
max_scn_compat=3
PL/SQL procedure successfully completed.
SQL> Alter Database Set SCN Compatibility 3;
Database altered.
SQL>  declare
  2   rsl number;
  3   headroom_in_scn number;
  4   headroom_in_sec number;
  5   cur_scn_compat number;
  6   max_scn_compat number;
  7   begin
  8   dbms_scn.GetCurrentSCNParams(rsl,headroom_in_scn,headroom_in_sec,cur_scn_compat,max_scn_compat);
  9   dbms_output.put_line('rsl=' || rsl);
 10   dbms_output.put_line('headroom_in_scn=' || headroom_in_scn);
 11   dbms_output.put_line('headroom_in_sec=' || headroom_in_sec);
 12   dbms_output.put_line('cur_scn_compat=' || cur_scn_compat);
 13   dbms_output.put_line('max_scn_compat=' || max_scn_compat);
 14   end;
 15   /
rsl=34585263898624
headroom_in_scn=34585261822622
headroom_in_sec=351819476
cur_scn_compat=3
max_scn_compat=3
PL/SQL procedure successfully completed.

这里大概演示了数据库scn compatibility变化带来的相关变化,这里可以看出来每秒

3. 如何禁用/启用scn compatibility自动升级

SQL>  begin dbms_scn.DisableAutoRollover; end;
  2   /
PL/SQL procedure successfully completed.
SQL> declare
  2   EFFECTIVE_AUTO_ROLLOVER_TS date;
  3   TARGET_COMPAT number;
  4   IS_ENABLED boolean;
  5   begin
  6    dbms_scn.GETSCNAUTOROLLOVERPARAMS(EFFECTIVE_AUTO_ROLLOVER_TS,TARGET_COMPAT,IS_ENABLED);
  7    dbms_output.put_line('EFFECTIVE_AUTO_ROLLOVER_TS='||to_char(EFFECTIVE_AUTO_ROLLOVER_TS,'yyyy-mm-dd hh24:mi:ss'));
  8    dbms_output.put_line('TARGET_COMPAT=' || TARGET_COMPAT);
  9   if(IS_ENABLED)then
 10    dbms_output.put_line('IS_ENABLED IS TURE');
 11   else
 12    dbms_output.put_line('IS_ENABLED IS FALSE');
 13   end if;
 14   end;
 15   /
EFFECTIVE_AUTO_ROLLOVER_TS=2019-06-23 00:00:00
TARGET_COMPAT=3
IS_ENABLED IS FALSE
PL/SQL procedure successfully completed.
SQL>

4. scn compatibility手工调整

SQL> Alter Database Set SCN Compatibility 2;
Database altered.
SQL> Alter Database Set SCN Compatibility 3;
Database altered.
SQL> Alter Database Set SCN Compatibility 1;
Alter Database Set SCN Compatibility 1
*
ERROR at line 1:
ORA-01126: database must be mounted in this instance and not open in any instance
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.
Total System Global Area 4999609080 bytes
Fixed Size                  9145080 bytes
Variable Size            1040187392 bytes
Database Buffers         3942645760 bytes
Redo Buffers                7630848 bytes
Database mounted.
SQL>  Alter Database Set SCN Compatibility 1;
Database altered.
SQL> alter database open;
Database altered.
SQL>  set serveroutput on ;
SQL>  declare
  2   rsl number;
  3   headroom_in_scn number;
  4   headroom_in_sec number;
  5   cur_scn_compat number;
 max_scn_compat number;
  6    7   begin
  8   dbms_scn.GetCurrentSCNParams(rsl,headroom_in_scn,headroom_in_sec,cur_scn_compat,max_scn_compat);
  9   dbms_output.put_line('rsl=' || rsl);
 dbms_output.put_line('headroom_in_scn=' || headroom_in_scn);
 10   11   dbms_output.put_line('headroom_in_sec=' || headroom_in_sec);
 12   dbms_output.put_line('cur_scn_compat=' || cur_scn_compat);
 13   dbms_output.put_line('max_scn_compat=' || max_scn_compat);
 end;
 / 14   15
rsl=16425127591936
headroom_in_scn=16425125502261
headroom_in_sec=1002510101
cur_scn_compat=1
max_scn_compat=3
PL/SQL procedure successfully completed.

参考文档：
Recommended patching and actions for Oracle database versions 12.1.0.1, 11.2.0.3 and earlier-before June 2019(Doc ID 2335265.1)
Recommended patches and actions for Oracle databases versions 12.1.0.1, 11.2.0.3 and earlier–before June 2019(Doc ID 2361478.1)

dul支持Oracle 19C

联系：手机/微信(+86 17813235971) QQ(107644445)

标题：dul支持Oracle 19C

Oracle 19C

[oracle@localhost ~]$ ss
SQL*Plus: Release 19.0.0.0.0 - Production on Sat Mar 2 07:02:18 2019
Version 19.2.0.0.0
Copyright (c) 1982, 2018, Oracle.  All rights reserved.
Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.2.0.0.0
SQL> select name from v$datafile where rownum<3;
NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/ORA19C/system01.dbf
/u01/app/oracle/oradata/ORA19C/sysaux01.dbf

dul支持19C

[root@localhost dul]# ./dul
Data UnLoader: 11.3.0.0.2 - Internal Only - on Sat Mar  2 08:26:11 2019
with 64-bit io functions and the decompression option
Copyright (c) 1994 2018 Bernard van Duijnen All rights reserved.
 Strictly Oracle Internal Use Only
DUL: Warning: Recreating file "dul.log"
Found db_id = 1054612630
Found db_name = ORA19C
DUL>  bootstrap;
DUL: Warning: Recreating file "dict.ddl"
Generating dict.ddl for version 12
 OBJ$: segobjno 18, file 1 block 240
 TAB$: segobjno 2, tabno 1, file 1  block 144
 COL$: segobjno 2, tabno 5, file 1  block 144
 USER$: segobjno 10, tabno 1, file 1  block 208
 TABPART$: segobjno 814, file 1 block 5424
 INDPART$: segobjno 819, file 1 block 5464
 TABCOMPART$: segobjno 836, file 1 block 5600
 INDCOMPART$: segobjno 841, file 1 block 5640
 TABSUBPART$: segobjno 826, file 1 block 5520
 INDSUBPART$: segobjno 831, file 1 block 5560
 IND$: segobjno 2, tabno 3, file 1  block 144
 ICOL$: segobjno 2, tabno 4, file 1  block 144
 LOB$: segobjno 2, tabno 6, file 1  block 144
 COLTYPE$: segobjno 2, tabno 7, file 1  block 144
 TYPE$: segobjno 740, tabno 1, file 1  block 4888
 COLLECTION$: segobjno 740, tabno 2, file 1  block 4888
 ATTRIBUTE$: segobjno 740, tabno 3, file 1  block 4888
 LOBFRAG$: segobjno 847, file 1 block 5688
 LOBCOMPPART$: segobjno 850, file 1 block 5720
 UNDO$: segobjno 15, file 1 block 224
 TS$: segobjno 6, tabno 2, file 1  block 176
 PROPS$: segobjno 127, file 1 block 1320
Running generated file "@dict.ddl" to unload the dictionary tables
. unloading table                      OBJ$
DUL: Warning: Recreating file "OBJ.ctl"
   72388 rows unloaded
. unloading table                      TAB$
DUL: Warning: Recreating file "TAB.ctl"
    2218 rows unloaded
. unloading table                      COL$
DUL: Warning: Recreating file "COL.ctl"
  123175 rows unloaded
. unloading table                     USER$
DUL: Warning: Recreating file "USER.ctl"
     127 rows unloaded
. unloading table                  TABPART$
DUL: Warning: Recreating file "TABPART.ctl"
     294 rows unloaded
. unloading table                  INDPART$
DUL: Warning: Recreating file "INDPART.ctl"
     195 rows unloaded
. unloading table               TABCOMPART$
DUL: Warning: Recreating file "TABCOMPART.ctl"
       1 row  unloaded
. unloading table               INDCOMPART$
DUL: Warning: Recreating file "INDCOMPART.ctl"
       0 rows unloaded
. unloading table               TABSUBPART$
DUL: Warning: Recreating file "TABSUBPART.ctl"
      32 rows unloaded
. unloading table               INDSUBPART$
DUL: Warning: Recreating file "INDSUBPART.ctl"
       0 rows unloaded
. unloading table                      IND$
DUL: Warning: Recreating file "IND.ctl"
    2878 rows unloaded
. unloading table                     ICOL$
DUL: Warning: Recreating file "ICOL.ctl"
    4958 rows unloaded
. unloading table                      LOB$
DUL: Warning: Recreating file "LOB.ctl"
     678 rows unloaded
. unloading table                  COLTYPE$
DUL: Warning: Recreating file "COLTYPE.ctl"
    2999 rows unloaded
. unloading table                     TYPE$
DUL: Warning: Recreating file "TYPE.ctl"
    5895 rows unloaded
. unloading table               COLLECTION$
DUL: Warning: Recreating file "COLLECTION.ctl"
    1384 rows unloaded
. unloading table                ATTRIBUTE$
DUL: Warning: Recreating file "ATTRIBUTE.ctl"
   15365 rows unloaded
. unloading table                  LOBFRAG$
DUL: Warning: Recreating file "LOBFRAG.ctl"
      14 rows unloaded
. unloading table              LOBCOMPPART$
DUL: Warning: Recreating file "LOBCOMPPART.ctl"
       0 rows unloaded
. unloading table                     UNDO$
DUL: Warning: Recreating file "UNDO.ctl"
      21 rows unloaded
. unloading table                       TS$
DUL: Warning: Recreating file "TS.ctl"
       6 rows unloaded
. unloading table                    PROPS$
DUL: Warning: Recreating file "PROPS.ctl"
      42 rows unloaded
Reading USER.dat 127 entries loaded
Reading OBJ.dat 72388 entries loaded and sorted 72388 entries
Reading TAB.dat 2201 entries loaded
Reading COL.dat
DUL: Notice: Increased the size of DC_COLUMNS from 100000 to 132768 entries
 123148 entries loaded and sorted 123148 entries
Reading TABPART.dat 294 entries loaded and sorted 294 entries
Reading TABCOMPART.dat 1 entries loaded and sorted 1 entries
Reading TABSUBPART.dat 32 entries loaded and sorted 32 entries
Reading INDPART.dat 195 entries loaded and sorted 195 entries
Reading INDCOMPART.dat 0 entries loaded and sorted 0 entries
Reading INDSUBPART.dat 0 entries loaded and sorted 0 entries
Reading IND.dat 2878 entries loaded
Reading LOB.dat 678 entries loaded
Reading ICOL.dat 4958 entries loaded
Reading COLTYPE.dat 2999 entries loaded
Reading TYPE.dat 5895 entries loaded
Reading ATTRIBUTE.dat 15365 entries loaded
Reading COLLECTION.dat 1384 entries loaded
Reading BOOTSTRAP.dat 60 entries loaded
Reading LOBFRAG.dat 14 entries loaded and sorted 14 entries
Reading LOBCOMPPART.dat 0 entries loaded and sorted 0 entries
Reading UNDO.dat 21 entries loaded
Reading TS.dat 6 entries loaded
Reading PROPS.dat 42 entries loaded
DUL> desc sys.tab$;
Table SYS.TAB$
obj#= 4, dataobj#= 2, ts#= 0, file#= 1, block#=144
      tab#= 1, segcols= 45, clucols= 1
Column information:
icol# 01 segcol# 01         OBJ# len   22 type  2 NUMBER(0)
icol# 02 segcol# 02     DATAOBJ# len   22 type  2 NUMBER(0)
icol# 03 segcol# 03          TS# len   22 type  2 NUMBER(0)
icol# 04 segcol# 04        FILE# len   22 type  2 NUMBER(0)
icol# 05 segcol# 05       BLOCK# len   22 type  2 NUMBER(0)
icol# 06 segcol# 06        BOBJ# len   22 type  2 NUMBER(0)
icol# 07 segcol# 07         TAB# len   22 type  2 NUMBER(0)
icol# 08 segcol# 08         COLS len   22 type  2 NUMBER(0)
icol# 09 segcol# 09      CLUCOLS len   22 type  2 NUMBER(0)
icol# 10 segcol# 10     PCTFREE$ len   22 type  2 NUMBER(0)
icol# 11 segcol# 11     PCTUSED$ len   22 type  2 NUMBER(0)
icol# 12 segcol# 12     INITRANS len   22 type  2 NUMBER(0)
icol# 13 segcol# 13     MAXTRANS len   22 type  2 NUMBER(0)
icol# 14 segcol# 14        FLAGS len   22 type  2 NUMBER(0)
icol# 15 segcol# 15       AUDIT$ len   38 type  1 VARCHAR2 cs 852(ZHS16GBK)
icol# 16 segcol# 16       ROWCNT len   22 type  2 NUMBER(0)
icol# 17 segcol# 17       BLKCNT len   22 type  2 NUMBER(0)
icol# 18 segcol# 18       EMPCNT len   22 type  2 NUMBER(0)
icol# 19 segcol# 19       AVGSPC len   22 type  2 NUMBER(0)
icol# 20 segcol# 20       CHNCNT len   22 type  2 NUMBER(0)
icol# 21 segcol# 21       AVGRLN len   22 type  2 NUMBER(0)
icol# 22 segcol# 22   AVGSPC_FLB len   22 type  2 NUMBER(0)
icol# 23 segcol# 23       FLBCNT len   22 type  2 NUMBER(0)
icol# 24 segcol# 24  ANALYZETIME len    7 type 12 DATE
icol# 25 segcol# 25   SAMPLESIZE len   22 type  2 NUMBER(0)
icol# 26 segcol# 26       DEGREE len   22 type  2 NUMBER(0)
icol# 27 segcol# 27    INSTANCES len   22 type  2 NUMBER(0)
icol# 28 segcol# 28      INTCOLS len   22 type  2 NUMBER(0)
icol# 29 segcol# 29   KERNELCOLS len   22 type  2 NUMBER(0)
icol# 30 segcol# 30     PROPERTY len   22 type  2 NUMBER(0)
icol# 31 segcol# 31     TRIGFLAG len   22 type  2 NUMBER(0)
icol# 32 segcol# 32       SPARE1 len   22 type  2 NUMBER(0)
icol# 33 segcol# 33       SPARE2 len   22 type  2 NUMBER(0)
icol# 34 segcol# 34       SPARE3 len   22 type  2 NUMBER(0)
icol# 35 segcol# 35       SPARE4 len 1000 type  1 VARCHAR2 cs 852(ZHS16GBK)
icol# 36 segcol# 36       SPARE5 len 1000 type  1 VARCHAR2 cs 852(ZHS16GBK)
icol# 37 segcol# 37       SPARE6 len    7 type 12 DATE
icol# 38 segcol# 38       SPARE7 len   22 type  2 NUMBER(0)
icol# 39 segcol# 39       SPARE8 len   22 type  2 NUMBER(0)
icol# 40 segcol# 40       SPARE9 len 1000 type  1 VARCHAR2 cs 852(ZHS16GBK)
icol# 41 segcol# 41      SPARE10 len 1000 type  1 VARCHAR2 cs 852(ZHS16GBK)
icol# 42 segcol# 42    ACDRFLAGS len   22 type  2 NUMBER(0)
icol# 43 segcol# 43   ACDRTSOBJ# len   22 type  2 NUMBER(0)
icol# 44 segcol# 44 ACDRDEFAULTTIME len   11 type 180 TIMESTAMP(9)
icol# 45 segcol# 45 ACDRROWTSINTCOL# len   22 type  2 NUMBER(0)

可能遇到错误

Reading TAB.dat
DUL: Error: string2ub8(618970019642690137449563136), Conversion to number (ub8) overflowed
DUL: Error: Number conversion error in file TAB.dat, line 22
DUL: Warning: Ignoring file TAB.dat cache
Reading COL.dat
DUL: Error: string2ub8(73786976294838206464), Conversion to number (ub8) overflowed
DUL: Error: Number conversion error in file COL.dat, line 114321
DUL: Warning: Ignoring file COL.dat cache

非归档数据库异常恢复一例

ORA-00322 ORA-00312恢复

利用VNCR修复CVE-2012-1675漏洞

12C数据库遭遇ORA-600 16703

SCN Compatibility问题汇总-2019年6月23日

dul支持Oracle 19C

月度归档：3月 2019