ArcCatalog连接数据库报错

ArcCatalog连接数据库报错：

 

Failed to connect to database.

Cannot connect to database because the database client software failed to load.  Be sure the database client software is installed and configured correctly.

 

因为ArcGIS 是32位的，安装的数据库client客户端也要求是32位的才行，PLSql是32位的，如果client是64位的，PLSQL连接时会报以下错误：

 

ORA-12154: TNS:could not resolve the connect identifier specified