ORA-20011: Approximate NDV failed: ORA-00600: internal error code, arguments

在做EBS 跨平臺遷移時，有一個步驟如下: 

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     從源應用伺服器上複製$APPL_TOP/admin/adstats.sql到目標資料庫端，以SYSDBA連線到sqlplus, 使用下面的命令重新啟動資料庫為 restricted 模式，執行 adstats.sql 指令碼 ：

$ sqlplus "/ as sysdba"
SQL> alter system enable restricted session;
SQL> @adstats.sql
$ sqlplus "/ as sysdba"
SQL> alter system disable restricted session;
SQL> exit;

結果執行報錯： 
ERROR at line 1:
ORA-20011: Approximate NDV failed: ORA-00600: internal error code, arguments:
[1350], [1], [23], [], [], [], [], [], [], [], [], []
ORA-06512: at “SYS.DBMS_STATS”, line 24867
ORA-06512: at “SYS.DBMS_STATS”, line 25408

查詢可能有如下幾個原因：

A Solution :
echo $ORA_NLS10
export ORA_NLS10=$ORACLE_HOME/nls/data/9idata
查詢發現 ORA_NLS10設定正確 。

繼續查詢metalink  ,  發現是一個未釋出的bug  -  DBMS_STATS.GATHER_FIXED_OBJECTS_STATS Fails With ORA-600 [1350], [1], [23] (文件 ID 1138205.1)

Cause
This is caused by unpublished Bug:9056912 - GATHERING STATISTICS ON EXTERNAL TABLES REQUIRES NULL FOR ESTIMATE_PERCENT
See Note:9056912.8 for an overview
Bug:9056912 is fixed in RDBMS 11.2.0.2 and 12.1 (Future Release).
 
Solution
To implement a solution for Bug:9056912, please execute any of the below alternative solutions:
 •Upgrade to 11.2.0.2
OR
 •Download and apply interim Patch:9056912, if available for your platform. and RDBMS release.
To check for conflicting patches, please use the MOS Patch Planner Tool.
OR
 •Use the workaround with specify null for estimate_percent when collecting stats for an external table using gather_table_stats.