ORA-600 kokasgi1故障处理(sys被重命名)---惜分飞

接到一个客户数据库无法启动的case请求,查看alert日志,发现错误是经典的ORA-600 kokasgi1

Fri Oct 17 21:56:48 2025 ALTER DATABASE OPEN Beginning crash recovery of 1 threads  parallel recovery started with 7 processes Started redo scan Completed redo scan  read 30 KB redo, 24 data blocks need recovery Started redo application at  Thread 1: logseq 3749, block 2, scn 111907926 Recovery of Online Redo Log: Thread 1 Group 2 Seq 3749 Reading mem 0   Mem# 0: /u01/oradata/orcl/redo02.log Completed redo application of 0.02MB Completed crash recovery at  Thread 1: logseq 3749, block 62, scn 111927984  24 data blocks read, 24 data blocks written, 30 redo k-bytes read Thread 1 advanced to log sequence 3750 (thread open) Thread 1 opened at log sequence 3750   Current log# 3 seq# 3750 mem# 0: /u01/oradata/orcl/redo03.log Successful open of redo thread 1 MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set SMON: enabling cache recovery [2261] Successfully onlined Undo Tablespace 2. Undo initialization finished serial:0 start:4294684900 end:4294684970 diff:70 (0 seconds) Verifying file header compatibility for 11g tablespace encryption.. Verifying 11g file header compatibility for tablespace encryption completed SMON: enabling tx recovery Database Characterset is ZHS16GBK Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_2261.trc  (incident=81755): ORA-00600: internal error code, arguments: [kokasgi1], [], [], [], [], [], [], [], [], [], [], [] Incident details in: /u01/app/oracle/diag/rdbms/orcl/orcl/incident/incdir_81755/orcl_ora_2261_i81755.trc Use ADRCI or Support Workbench to package the incident. See Note 411.1 at My Oracle Support for error and packaging details. Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_2261.trc: ORA-00600: internal error code, arguments: [kokasgi1], [], [], [], [], [], [], [], [], [], [], [] Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_2261.trc: ORA-00600: internal error code, arguments: [kokasgi1], [], [], [], [], [], [], [], [], [], [], [] Error 600 happened during db open, shutting down database USER (ospid: 2261): terminating the instance due to error 600 Instance terminated by USER, pid = 2261

尝试启动数据库确实报该错误

SQL> alter database open; alter database open * ERROR at line 1: ORA-01092: ORACLE instance terminated. Disconnection forced ORA-00600: internal error code, arguments: [kokasgi1], [], [], [], [], [], [],[], [], [], [], [] Process ID: 164830 Session ID: 688 Serial number: 169

这类错误恢复比较多:
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等保修改oracle SYS用户名要求的请注意—ORA-00600 kokasgi1
重命名sys用户引起数据库启动报ORA-01092 ORA-00600 kokasgi1错误
处理方法比较简单,就是在数据库启动的过程中绕过对SYS用户的检查,然后把user#=0的用户update为SYS（在后续数据库版本中,oracle可能发现了该问题,直接禁止用户级别对user$进行update操作update user$报ORA-01031错误）,再重启库即可

SQL> update user$ set name='SYS' WHERE USER#=0; 1 row updated. SQL> commit; Commit complete. SQL>  select user#,name from user$ WHERE USER#=0;      USER# NAME ---------- ------------------------------          0 SYS SQL> alter system checkpoint; System altered. SQL> shutdown abort; ORACLE instance shut down. [oracle@oracle ~]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Sat Oct 18 00:36:37 2025 Copyright (c) 1982, 2013, Oracle.  All rights reserved. Connected to an idle instance. SQL> startup mount; ORACLE instance started. Total System Global Area 1286066176 bytes Fixed Size                  2252904 bytes Variable Size            1157631896 bytes Database Buffers          117440512 bytes Redo Buffers                8740864 bytes Database mounted. SQL> SQL> SQL> recover database; Media recovery complete. SQL> alter database open; Database altered.

完美处理ORA-600 kokasgi1故障,实现数据0丢失,业务快速恢复