Oracle RAC中ORA-01843錯誤分析
ORA-01843: not a valid month
Cause:
A date specified an valid month.
Valid month are: January-December, for format code MONTH, and Jan-Dec, for format code MON.
Action:
Enter a valid month value in the correct format.
今天同事說在叢集環境中有報ORA-01843錯誤。
實驗:
SQL> create table test (d date);
Table created.
SQL> insert into test values (to_date('12-JAN-2009','DD-MON-YYYY'));
insert into test values (to_date('12-JAN-2009','DD-MON-YYYY'))
*
ERROR at line 1:
ORA-01843: not a valid month
SQL> col property_name format a30;
SQL> col property_value format a30;
SQL> set linesize 200
SQL> select property_name, property_value
from database_properties
2 3 where property_name in
4 ('NLS_LANGUAGE', 'NLS_TERRITORY', 'NLS_CHARACTERSET');
PROPERTY_NAME PROPERTY_VALUE
------------------------------ ------------------------------
NLS_LANGUAGE AMERICAN
NLS_TERRITORY AMERICA
NLS_CHARACTERSET ZHS16GBK
SQL> col parameter format a30
SQL> col value format a30
SQL> select *
2 from NLS_database_PARAMETERS
3 where parameter in ('NLS_LANGUAGE', 'NLS_TERRITORY', 'NLS_CHARACTERSET');
PARAMETER VALUE
------------------------------ ------------------------------
NLS_LANGUAGE AMERICAN
NLS_TERRITORY AMERICA
NLS_CHARACTERSET ZHS16GBK
SQL> select *
2 from NLS_instance_PARAMETERS
3 where parameter in ('NLS_LANGUAGE', 'NLS_TERRITORY', 'NLS_CHARACTERSET');
PARAMETER VALUE
------------------------------ ------------------------------
NLS_LANGUAGE SIMPLIFIED CHINESE
NLS_TERRITORY CHINA
SQL> select *
2 from NLS_session_PARAMETERS
3 where parameter in ('NLS_LANGUAGE', 'NLS_TERRITORY', 'NLS_CHARACTERSET');
PARAMETER VALUE
------------------------------ ------------------------------
NLS_LANGUAGE SIMPLIFIED CHINESE
NLS_TERRITORY CHINA
SQL> show parameters nls_language
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
nls_language string SIMPLIFIED CHINESE
SQL> alter session set nls_language='AMERICAN';
Session altered.
SQL> insert into test values (to_date('13-JAN-2009','DD-MON-YYYY'));
1 row created.
SQL> alter session set nls_language='SIMPLIFIED CHINESE';
Session altered.
SQL> insert into test values (to_date('13-JAN-2009','DD-MON-YYYY'));
insert into test values (to_date('13-JAN-2009','DD-MON-YYYY'))
*
ERROR at line 1:
ORA-01843: not a valid month
SQL> alter session set nls_date_language='AMERICAN';
Session altered.
SQL> insert into test values (to_date('13-JAN-2009','DD-MON-YYYY'));
1 row created.
SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Production
With the Partitioning, Real Application Clusters, OLAP, Data Mining
and Real Application Testing options
[oracle@rhel1 ~]$ export NLS_LANG=AMERICAN
[oracle@rhel1 ~]$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.4.0 - Production on Mon Mar 1 06:08:12 2010
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Production
With the Partitioning, Real Application Clusters, OLAP, Data Mining
and Real Application Testing options
SQL> insert into test values (to_date('13-JAN-2009','DD-MON-YYYY'));
1 row created.
從以上實驗可以看出,罪魁禍首就是引數檔案中的nls_language引數值。在單機下,nls_language與資料庫的nls_language值是一致的。由於客戶端沒有設定NLS_LANG環境變數,也未設定session級別的nls_language,nls_date_language值。所以插入日期型別就按照例項級別的nls_language來設定,因為引數值是SIMPLIFIED CHINESE,插入的日期格式是to_date('12-JAN-2009','DD-MON-YYYY')而非SIMPLIFIED CHINESE語言的to_date('12-六月-2009','DD-MON-YYYY'),故出現ORA-01843錯誤。
解決方法:
export NLS_LANG=AMERICAN_AMERICA.ZHS16GBK
或者
alter session set nls_language='AMERICAN';
或者
alter session set nls_date_language='AMERICAN';
或者
alter system set nls_language='AMERICAN' scope=spfile sid='*';
今天發現出現這種錯誤還有另外一種情況:
表結構:
SQL> desc d
名稱 是否為空? 型別
----------------------------------------- -------- ---------------
D TIMESTAMP(6)
把同事寫的SQL語句列印出來結果是:
insert into d values ('2011-12-12 12:12:12');
執行就會報錯:
SQL> insert into d values ('2011-12-12 12:12:12')
2 ;
insert into d values ('2011-12-12 12:12:12')
*
第 1 行出現錯誤:
ORA-01843: not a valid month
加入to_timestamp函式即可:
SQL> insert into d values (to_timestamp('2011-12-12 12:12:12','yyyy-mm-dd hh24:mi:ss'));
已建立 1 行。
來自 “ ITPUB部落格 ” ,連結:http://blog.itpub.net/23135684/viewspace-628044/,如需轉載,請註明出處,否則將追究法律責任。
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