错误提示的解释如下：
ORA-12708 error while loading create database NLS parameter string Cause: This is an internal error. Action: Contact Oracle Support Services.
在跟踪启动过程时可以得到如下的信息：
select value$ from sys.props$ where name = :1 END OF STMT PARSE #4:c=0,e=703,p=0,cr=0,cu=0,mis=1,r=0,dep=1,og=4,tim=4116419526 BINDS #4: kkscoacd Bind#0 oacdty=01 mxl=32(17) mxlc=00 mal=00 scl=00 pre=00 oacflg=18 fl2=0001 frm=01 csi=871 siz=32 off=0 kxsbbbfp=0af128c8 bln=32 avl=17 flg=05 value="NLS_RDBMS_VERSION" EXEC #4:c=0,e=976,p=0,cr=0,cu=0,mis=1,r=0,dep=1,og=4,tim=4116420710 FETCH #4:c=0,e=112,p=0,cr=3,cu=0,mis=0,r=1,dep=1,og=4,tim=4116420867 ORA-12708: 鍔犺浇鍒涘缓鏁版嵁搴?NLS 鍙傛暟 NLS_RDBMS_VERSION 鏃跺嚭閿? EXEC #1:c=593750,e=10770613,p=176,cr=1254,cu=149,mis=0,r=0,dep=0,og=1,tim=4120039529 ERROR #1:err=1092 tim=18857926
可以发现，上面的示例中有部分乱码，数据显示，启动读取NLS_RDBMS_VERSION时出现错误。
使用免费的AUL工具后，我们可以将PROPS$字典表挖掘出来，大家会发现下面的数据：
DICT.BASE|ZHS16GBK|dictionary base tables version # DEFAULT_TEMP_TABLESPACE|ZHS16GBK|Name of default temporary tablespace DEFAULT_PERMANENT_TABLESPACE|ZHS16GBK|Name of default permanent tablespace DEFAULT_TBS_TYPE|ZHS16GBK|Default tablespace type NLS_LANGUAGE|ZHS16GBK|Language NLS_TERRITORY|ZHS16GBK|Territory NLS_CURRENCY|ZHS16GBK|Local currency NLS_ISO_CURRENCY|ZHS16GBK|ISO currency NLS_NUMERIC_CHARACTERS|ZHS16GBK|Numeric characters NLS_CHARACTERSET|ZHS16GBK|Character set NLS_CALENDAR|ZHS16GBK|Calendar system NLS_DATE_FORMAT|ZHS16GBK|Date format NLS_DATE_LANGUAGE|ZHS16GBK|Date language NLS_SORT|ZHS16GBK|Linguistic definition NLS_TIME_FORMAT|ZHS16GBK|Time format NLS_TIMESTAMP_FORMAT|ZHS16GBK|Time stamp format NLS_TIME_TZ_FORMAT|ZHS16GBK|Time with timezone format NLS_TIMESTAMP_TZ_FORMAT|ZHS16GBK|Timestamp with timezone format NLS_DUAL_CURRENCY|ZHS16GBK|Dual currency symbol NLS_COMP|ZHS16GBK|NLS comparison NLS_LENGTH_SEMANTICS|ZHS16GBK|NLS length semantics NLS_NCHAR_CONV_EXCP|ZHS16GBK|NLS conversion exception NLS_NCHAR_CHARACTERSET|ZHS16GBK|NCHAR Character set NLS_RDBMS_VERSION|ZHS16GBK|RDBMS version for NLS parameters GLOBAL_DB_NAME|ZHS16GBK|Global database name EXPORT_VIEWS_VERSION|ZHS16GBK|Export views revision # DBTIMEZONE|ZHS16GBK|DB time zone
读者可以发现，props$.value$列都被更新为ZHS16GBK,显然这是在一次不适当的更新操作中遗漏了WHERE条件。由此可见，数据库管理员必须了解WHERE条件的重要性，并且在UPDATE时也一定不要遗漏掉。
