数据库作为企业的核心，如果数据库因损坏无法正常运行，导致数据丢失，将给企业带来无法挽回的经济损坏。当您的数据库出现故障，又没有有效的备份之时，我们就是您的最后一道防线，尽最大可能帮您挽救数据库，减少损失。我们是原服务于Oracle原厂售后（ACS），有Oracle ACE的国内知名数据库专家团队；帮客户恢复数据库1000套以上，总恢复数据量1000T以上；恢复数据库版本从ORACLE 7、ORACLE 8/8I，ORACLE 9I、ORACLE 10G，ORACLE 11G，ORACLE 12C，ORACLE 18C到ORACLE 19C；平台有Linux、Windows、AIX、HP-UNIX、SOLARIS等；客户从新疆到海南，从黑龙江到广西遍布中国所有省份；客户有：金融(保险,银行,证劵,基金等)、通信(移动,电信,联通)、能源(电力,石油,煤炭,光伏等)、政府/公共(公安,社/医保,军队,高校,医院,税务,政府等)、制造业/商贸(互联网,电子机械,商贸流通,制造业等)等各行业。不管你是什么样的数据库故障，不管你找过多少个人和公司恢复没成功，我们都是你的一个值得考虑选择。我们不敢说全国技术第一，但绝对是Oracle数据库恢复国内第一梯队，我们可以保证如果我们不能恢复的Oracle数据库，你的数据库几乎无人可以恢复成功。我们承诺：所有数据库恢复不成功，未达到实现承诺不收取任何费用。

如果需要专业ORACLE数据库恢复技术支持，请联系我们
电话/微信:17813235971    Q Q:107644445    E-Mail:dba@xifenfei.com

主要支持数据库恢复内容但不仅限如此
误drop table 恢复
数据文件大小为0kb
误delete/update 恢复
误truncate table 恢复
asm数据文件丢失/误删除
丢失system文件数据库恢复
asm 磁盘被意外格式化恢复
bootstarp$中对象验证损坏
Oracle数据文件被加密恢复
Oracle dmp文件被加密恢复
asm磁盘组损坏，无法正常mount
操作系统层面误删除数据文件恢复
数据库因为undo损坏/丢失无法正常启动
数据库因为某些数据块损坏不能正常工作
数据库因为ORA-600错误而不能正常启动
exp dmp文件损坏，无法正常导入数据库恢复
数据库因为控制文件损坏/丢失无法正常启动
数据库因为redo损坏/丢失导致无法正常启动
数据库因为数据文件损坏/丢失无法正常启动
数据库因为丢失归档导致数据文件无法online
数据库错误offline system文件导致无法启动
数据库因为操作系统损坏，只有数据文件恢复
数据库因存储异常，导致数据库无法正常启动
expdp dmp文件损坏，无法正常导入数据库恢复
部分asm磁盘丢失导致asm 磁盘组无法正常使用
数据库因为错误的resetlogs操作导致恢复无法继续
数据库因为断电、异常关机等原因导致不能正常启动

以下是比较典型的ORACLE故障恢复
system rollback异常恢复
ORA-00604 ORA-00607 ORA-00600[4194]

Thu Jul 26 13:21:11 2012
Recovery of Online Redo Log: Thread 1 Group 1 Seq 3994 Reading mem 0
  Mem# 0: /orasvr/mispdata/redo01.log
Block recovery completed at rba 3994.5.16, scn 0.89979533
Thu Jul 26 13:21:11 2012
Errors in file /orasvr/admin/mispdata/udump/mispdata_ora_2865.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-00607: Internal error occurred while making a change to a data block
ORA-00600: internal error code, arguments: [4194], [31], [2], [], [], [], [], []
Error 604 happened during db open, shutting down database
USER: terminating instance due to error 604
Instance terminated by USER, pid = 2865
ORA-1092 signalled during: ALTER DATABASE OPEN...

undo segment异常恢复
ORA-00704 ORA-00604 ORA-01555

Fri May  4 21:04:21 2012
select ctime, mtime, stime from obj$ where obj# = :1
Fri May  4 21:04:21 2012
Errors in file /oracle/admin/standdb/udump/perfdb_ora_1286288.trc:
ORA-00704: bootstrap process failure
ORA-00704: bootstrap process failure
ORA-00604: error occurred at recursive SQL level 1
ORA-01555: snapshot too old: rollback segment number 40 with name "_SYSSMU40$" too small
Error 704 happened during db open, shutting down database
USER: terminating instance due to error 704
Instance terminated by USER, pid = 1286288
ORA-1092 signalled during: alter database open resetlogs...

ORA-00704 ORA-00604 ORA-01173

MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set
Wed Feb 12 10:16:00 2014
SMON: enabling cache recovery
Errors in file H:\ORACLE\diag\rdbms\orcl\orcl\trace\orcl_ora_9232.trc:
ORA-01173: data dictionary indicates missing data file from system tablespace
Errors in file H:\ORACLE\diag\rdbms\orcl\orcl\trace\orcl_ora_9232.trc:
ORA-00704: bootstrap process failure
ORA-00704: bootstrap process failure
ORA-00604: error occurred at recursive SQL level 1
ORA-01173: data dictionary indicates missing data file from system tablespace
Errors in file H:\ORACLE\diag\rdbms\orcl\orcl\trace\orcl_ora_9232.trc:
ORA-00704: bootstrap process failure
ORA-00704: bootstrap process failure
ORA-00604: error occurred at recursive SQL level 1
ORA-01173: data dictionary indicates missing data file from system tablespace
Error 704 happened during db open, shutting down database
USER (ospid: 9232): terminating the instance due to error 704
Instance terminated by USER, pid = 9232
ORA-1092 signalled during: alter database open resetlogs...

obj$事务异常恢复
ORA-00704 ORA-00600[4000]

Thu Feb 28 19:29:10 2013
SMON: enabling cache recovery
Thu Feb 28 19:29:11 2013
Errors in file /u1/PROD/prodora/db/tech_st/10.2.0/admin/PROD_oracle/udump/prod_ora_20989.trc:
ORA-00600: internal error code, arguments: [4000], [50], [], [], [], [], [], []
Thu Feb 28 19:29:13 2013
Incremental checkpoint up to RBA [0x1.3.0], current log tail at RBA [0x1.3.0]
Thu Feb 28 19:29:13 2013
Errors in file /u1/PROD/prodora/db/tech_st/10.2.0/admin/PROD_oracle/udump/prod_ora_20989.trc:
ORA-00704: bootstrap process failure
ORA-00704: bootstrap process failure
ORA-00600: internal error code, arguments: [4000], [50], [], [], [], [], [], []
Thu Feb 28 19:29:13 2013
Error 704 happened during db open, shutting down database
USER: terminating instance due to error 704
Instance terminated by USER, pid = 20989
ORA-1092 signalled during: ALTER DATABASE OPEN RESETLOGS...

IO异常恢复
ORA-01115 ORA-01110 ORA-27070 OSD-04016

Tue May 14 15:32:10 2013
Completed redo scan
 16941 redo blocks read, 1106 data blocks need recovery
Tue May 14 15:32:17 2013
Errors in file d:\oracle\product\10.2.0\admin\water\bdump\water_p002_1472.trc:
ORA-01115: IO error reading block from file 6 (block # 81951)
ORA-01110: data file 6: 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\WATER\YD_DATA01.DBF'
ORA-27070: async read/write failed
OSD-04016: 异步 I/O 请求排队时出错。
O/S-Error: (OS 23) 数据错误(循环冗余检查)。

常见错误信息
表或者索引坏块相关错误
ORA-01578/ORA-08103/ORA-01410/ORA-08102/ORA-600 kdsgrp1/ORA-600 qertbfetchbyrowid/ORA-01499/ORA-01555/ORA-26040/ORA-27046

控制文件异常
ORA-00202/ORA-600 kccsbck_first/ORA-600 kccscf_1/ORA-600[kccsbck_first]/ORA-600 kccsbck_first/ORA-00205/ORA-600 kccpb_sanity_check_2

REDO或者UNDO异常
ORA-00376/ORA-00600 4097/ORA-01595/ORA-600 4194/ORA-600 4193/ORA-600 kcfrbd_3/ORA-00600 4137/ORA-01594/ORA-01555/ORA-00704/ORA-00604/ORA-00607/ORA-600 4000/ORA-00600[3705]/ORA-00316/ORA-00312/ORA-00327/ORA-01623/ORA-01624/ORA-01194/ORA-600 2662/ORA-00368/ORA-00353/ORA-00305/ORA-00340/ORA-00345/ORA-00354

各种ORA-600错误
ORA-600 4497/ORA-600 6947/ORA-600 2662/ORA-600 4194/ORA-600 4193/ORA-00600 4137/ORA-600 4000/ORA- 600 kcrf_resilver_log_1/ORA- 600 kdxlin:psno out of range/ORA-600 3020/ORA-600 kccpb_sanity_check_2/ORA-600 3705/ORA-600 kccscf_1/ORA-600 kghstack_free2/ORA-600 kcfrbd_3/ORA-600 ktbdchk1: bad dscn/ORA-600 2252/ORA-600 kcratr_nab_less_than_odr/ORA-600 kccsbck_first/ORA-600 kcratr1_lostwrt/ORA-600 ktspNextL1:4/ORA-600 13013/ORA-600 kdsgrp1/ORA-600 kmgs_parameter_update_timeout_1/ORA-600 kcbgtcr_1/ORA-600 kcbgtcr_1a/ORA-600 kcbgtcr_3/ORA-600 kcbgtcr_4/ORA-600 kcbgtcr_5/ORA-600 kcbgtcr_6/ORA-600 kcbgtcr_7/ORA-600 kcbgtcr_10/ORA-600 kcbgtcr_12/ORA-600 kcbgtcr_13/ORA-600 qertbfetchbyrowid/ORA-600 kmgs_parameter_update_timeout_1

为了能快速评估你的库故障，恢复难以程度，请使用Oracle Database Recovery Check检查数据库，生成html, alert日志, trace文件发我(adb@xifenfei.com)。
近期无备份数据库恢复主要案例