Oracle 记一次ORA-00001问题处理

insert all方式插入数据提示如下：
ORA-00001: unique constraint (C##CJC.SYS_C008089) violated
经检查插入的列并没有重复的值。

中文字段有主键约束，由于插入数据时中文乱码，中文字符全部变成"?"，导致相同长度的中文字段被识别为重复数据，最终导致数据无法插入。

正确配置NLS_LANG环境变量。

SQL> show user
USER is "C##CJC"
create table t1(t_name varchar2(300),t_status varchar2(5),primary key(t_name));

insert all
into t1 values('人生七十古稀，','1')
into t1 values('我年七十为奇。','1')
into t1 values('前十年幼小，','1')
into t1 values('后十年衰老；','1')
into t1 values('中间只有五十年，','1')
into t1 values('一半又在夜里过了。','1')
into t1 values('算来只有二十五年在世','1')
into t1 values('受尽多少奔波烦恼。','1')
select 1 from dual;

ERROR at line 1:
ORA-00001: unique constraint (C##CJC.SYS_C008089) violated

[oracle@cjcos02 ~]$ oerr ora 00001
00001, 00000, "unique constraint (%s.%s) violated"
// *Cause: An UPDATE or INSERT statement attempted to insert a duplicate key.
//         For Trusted Oracle configured in DBMS MAC mode, you may see
//         this message if a duplicate entry exists at a different level.
// *Action: Either remove the unique restriction or do not insert the key.

SQL> col t1_name for a30
SQL> select * from t1;
no rows selected

SQL> insert into t1 values('人生七十古稀，','1');
1 row created.

SQL> insert into t1 values('我年七十为奇。','1');
insert into t1 values('我年七十为奇。','1')
*
ERROR at line 1:
ORA-00001: unique constraint (C##CJC.SYS_C008089) violated

SQL> insert into t1 values('前十年幼小，','1');
1 row created.

SQL> insert into t1 values('后十年衰老；','1');
insert into t1 values('后十年衰老；','1')
*
ERROR at line 1:
ORA-00001: unique constraint (C##CJC.SYS_C008089) violated

SQL> col t_name for a30
SQL> select * from t1
T_NAME        T_STA
------------------------------ -----
?????????????????????        1
??????????????????        1

[oracle@cjcos02 dbs]$ echo $NLS_LANG

[oracle@cjcos02 dbs]$ echo $LANG
en_US.UTF-8

文件---属性---终端---编码
当前是:Unicode(UTF-8)

NLS_LANGUAGE为:AMERICAN
NLS_CHARACTERSET为:AL32UTF8 

col PARAMETER for a30
col VALUE for a30
set pagesize 100
select * from v$nls_parameters where parameter = 'NLS_CHARACTERSET';
PARAMETER        VALUE   CON_ID
------------------------------ ------------------------------ ----------
NLS_CHARACTERSET        AL32UTF8         1

col PARAMETER for a30
col VALUE for a30
set pagesize 100
select PARAMETER,VALUE from nls_database_parameters;
PARAMETER        VALUE
------------------------------ ------------------------------
NLS_RDBMS_VERSION           19.0.0.0.0
NLS_NCHAR_CONV_EXCP         FALSE
NLS_LENGTH_SEMANTICS        BYTE
NLS_COMP                    BINARY
NLS_DUAL_CURRENCY           $
NLS_TIMESTAMP_TZ_FORMAT     DD-MON-RR HH.MI.SSXFF AM TZR
NLS_TIME_TZ_FORMAT          HH.MI.SSXFF AM TZR
NLS_TIMESTAMP_FORMAT        DD-MON-RR HH.MI.SSXFF AM
NLS_TIME_FORMAT             HH.MI.SSXFF AM
NLS_SORT                    BINARY
NLS_DATE_LANGUAGE           AMERICAN
NLS_DATE_FORMAT             DD-MON-RR
NLS_CALENDAR                GREGORIAN
NLS_NUMERIC_CHARACTERS      .,
NLS_NCHAR_CHARACTERSET      AL16UTF16
NLS_CHARACTERSET            AL32UTF8
NLS_ISO_CURRENCY            AMERICA
NLS_CURRENCY                $
NLS_TERRITORY               AMERICA
NLS_LANGUAGE                AMERICAN
20 rows selected.

SQL> select userenv('language') from dual;
USERENV('LANGUAGE')
----------------------------------------------------
AMERICAN_AMERICA.AL32UTF8

NLS_LANG=<Language>_<Territory>.<Clients Characterset> 
LANGUAGE指定: 
-Oracle消息使用的语言 
-日期中月份和日显示 
TERRITORY指定 
-货币和数字格式 
-地区和计算星期及日期的习惯 
CHARACTERSET: 
-控制客户端应用程序使用的字符集

[oracle@cjcos02 dbs]$ export NLS_LANG=AMERICAN_AMERICA.AL32UTF8
[oracle@cjcos02 dbs]$ echo $NLS_LANG
AMERICAN_AMERICA.AL32UTF8

sqlplus c##cjc/******
SQL>
insert all
into t1 values('人生七十古稀，','1')
into t1 values('我年七十为奇。','1')
into t1 values('前十年幼小，','1')
into t1 values('后十年衰老；','1')
into t1 values('中间只有五十年，','1')
into t1 values('一半又在夜里过了。','1')
into t1 values('算来只有二十五年在世','1')
into t1 values('受尽多少奔波烦恼。','1')
select 1 from dual;

8 rows created.

SQL> col t_name for a30
SQL> Select * from t1;
T_NAME        T_STA
------------------------------ -----
人生七十古稀，                 1
我年七十为奇。1
前十年幼小，                   1
后十年衰老；1
中间只有五十年，               1
一半又在夜里过了。1
算来只有二十五年在世           1
受尽多少奔波烦恼。             1
8 rows selected.
SQL> commit;
Commit complete.