ORA-12899: value too large for column LabelName (actual: 36, maximum: 32)

1）导入时报错，如图

ORA-02374: conversion error loading table "ITMUSER"."K17DOSINF1"
ORA-12899: value too large for column LabelName (actual: 36, maximum: 32)
ORA-02372: data for row: LabelName : 0X'CFB5CDB3B1A3C1F42020202020202020202020202020202020'

2）通过查两边库发现字符集不一样

导出库：

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

AMERICAN_AMERICA.ZHS16GBK

导入库：
SQL> select userenv('language') from dual;
USERENV('LANGUAGE')
----------------------------------------------------

AMERICAN_AMERICA.AL32UTF8

3）修改导入库的字符集

SQL>STARTUP MOUNT;

SQL>ALTER SYSTEM ENABLE RESTRICTED SESSION;


SQL>ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0;


SQL>ALTER SYSTEM SET AQ_TM_PROCESSES=0;


SQL>ALTER DATABASE OPEN;


SQL>ALTER DATABASE CHARACTER SET INTERNAL_USE ZHS16GBK; //跳过超子集检测

SQL>shutdown immediate;

SQL>STARTUP;

4）重新导入成功