文档解释
ORA-00338: log string of thread string is more recent than control file
Cause: The control file change sequence number in the log file is greater than the number in the control file. This implies that the wrong control file is being used. Note that repeatedly causing this error can make it stop happening without correcting the real problem. Every attempt to open the database will advance the control file change sequence number until it is great enough.
Action: Use the current control file or do backup control file recovery to make the control file current. Be sure to follow all restrictions on doing a backup control file recovery.
这是一个Oracle 数据库错误，指出检查到某个 redo 日志文件中保存的 SCN 值比控制文件中已知 SCN 值要新。
官方解释
ORA-00338: log string of thread string is more recent than control file
Cause: The redo log file indicated has a higher SCN than that in the control file.
Action: Open the database or mount it in exclusive mode after resetting logs.
常见案例
此错误通常发生在以下几种情形：
1. 用户在控制文件已损坏的情况下打开数据库。
2. 当在控制文件的SCN值可能比redo日志文件的SCN值更旧的情况下打开数据库。
正常处理方法及步骤
1. 确保redo日志文件正确：
可以通过执行以下SQL语句来确认redo日志中SCN值：
SELECT FIRST_CHANGE#, NEXT_CHANGE# FROM V$LOGFILE;
2. 在数据库以EXCLUSIVE模式mount：
以exclusive模式mount数据库：
SQL> SHUTDOWN IMMEDIATE;
SQL> STARTUP MOUNT EXCLUSIVE;
3. 重置日志：
如果备份控制文件正常，可以使用resetlogs参数；如果备份控制文件不正常，则使用noresetlogs参数：
SQL> ALTER DATABASE OPEN RESETLOGS;
SQL> ALTER DATABASE OPEN NORESETLOGS;
