对表进行DML 或DDL 都报ORA-00600: [kntgMvLogObjn]。

（1）先删除materialized view log ，然后再对表进行DML 或DDL 。
select * from dba_mviews;
select * from dba_mview_logs;
drop materialized view log on TABLE_NAME;
（2）如果第一步还不能解决，那么就需要重建MATERIALIZED VIEW LOG。
一般是之前重命名过用户或表。可能是在obj$等数据字典中的信息出现了不一致的情况。
可以参考 Doc ID 1612402.1 对于这类问题Oracle的一个建议就是使用重建物化视图日志，使用with rowid的方式来创建，然后删除。
SELECT * FROM sys.MLOG$;
CREATE MATERIALIZED VIEW LOG ON TABLE_NAME WITH ROWID;
drop materialized view log ON TABLE_NAME;

官方的解释如下：
Cause
Dictionary information related to a materialized view log defined on the table is partly missing due to a rename of a table while a materialized view log was still defined on it and afterwards trying to drop the table.
The MLOG$ entry didn't exist but the MLOG$_... segment in OBJ$ still existed, and the table referenced in its flags that it uses a materialized view log.
Solution
To implement a solution for this issue please execute the following steps in the given order:
    drop the MLOG$_... segment from the database using a DROP TABLE command
    create a new materialized view log using CREATE MATERIALIZED VIEW LOG ON <table> WITH ROWID;
    drop the table with the materialized view log defined on it

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DML DDL 都报ORA-00600: [kntgMvLogObjn]的解决办法

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