ORA-01502: index ‘index_name' or partition of such index is in unusable state

错误现象：

　　今天发布脚本时，一个表插入数据时报以下错误

　　ORA-01502: index ‘index_name' or partition of such index is in unusable state
　　ORA-06512: at line 168

错误缘由：

　　这个错误通常是由于索引状态为UNUSABLE引发的。你能够经过下面SQL，查看索引的状态

SELECT OWNER, INDEX_NAME,STATUS  FROM DBA_INDEXES WHERE INDEX_NAME='INDEX_NAME' 
SELECT OWNER, INDEX_NAME,STATUS  FROM ALL_INDEXES WHERE INDEX_NAME='INDEX_NAME' 

SELECT  INDEX_NAME,STATUS  FROM USER_INDEXES WHERE INDEX_NAME='INDEX_NAME' 

此时须要重建索引便可 

ALTER INDEX INDEX_NAME REBUILD