前段时间遇到了一个600错误，刚开始下了我一身冷汗，后来网上查了一下资料，呼。。。。。。

1. 情况描述
    shutdown 10.2.0.4 版本的instance时报错：
    ORA-00600: internal error code, arguments: [LibraryCacheNotEmptyOnClose], [], [], [], [], [], [], []

SQL> conn / as sysdba
Connected.
SQL> show parameter instance
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
active_instance_count                integer
cluster_database_instances           integer     1
instance_groups                      string
instance_name                        string      rcat
instance_number                      integer     0
instance_type                        string      RDBMS
open_links_per_instance              integer     4
parallel_instance_group              string
parallel_server_instances            integer     1
SQL> show parameter pfile
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
spfile                               string      D:\ORACLE\PRODUCT\10.2.0\DB_1\
                                                 DATABASE\SPFILERCAT.ORA
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORA-00600: internal error code, arguments: [LibraryCacheNotEmptyOnClose], [], [], [], [], [], [], []

2. 原因
    
    This is due to unpublished Bug 4483084 'ORA-600 [LIBRARYCACHENOTEMPTYONCLOSE]' This is a bug in that an ORA-600 error is reported when it is found that something is still going on during shutdown.
    It does not indicate any damage or a problem in the system.ORA-600 [LibraryCacheNotEmptyOnClose] is reported in the alert.log on shutdown.

The error can be safely ignored as it does not indicate a problem with the database.

参考文献：

1. ORA-600 [Librarycachenotemptyonclose] Reported At Shutdown [ID 365103.1]
2. http://space.itpub.net/7607759/viewspace-441034