問題描述：

arcgis server10.1 arcgis sde10出現下面問題

Cannot connect to database because the database client software failed to load. Be sure the

database client software is installed and configured correctly.

由於數據庫客戶端軟件無法加載，無法連接到數據庫。請確保數據庫客戶端軟件已安裝和配置正確。

找原因：

The machine where ArcGIS Server is installed is missing the 64-bit client libraries for the specific DBMS to which the connection is being made.

安裝ArcGIS Server的機器缺少正在進行連接的特定DBMS的64位客戶端庫。

解決方法：

Install the 64-bit client libraries for the database on each ArcGIS Server machine in the site. It is important to remember that ArcGIS Server is a 64-bit application and requires a 64-bit database client, versus ArcGIS Desktop which is a 32-bit application and requires a 32-bit database client. After installing the database client, open the Administrative Tools > Services dialog and restart the ArcGIS Server service so that the new database libraries and variable changes can be detected.

在站點上的每個ArcGIS Server機器上安裝數據庫的64位客戶端庫。重要的是要記住ArcGIS Server是一個64位的應用程序，需要一個64位的數據庫客戶端，而ArcGIS桌面是32位的應用程序，需要32位的數據庫客戶端。在安裝數據庫客戶端之後，打開管理工具>服務對話框並重新啟動ArcGIS Server服務，以便可以檢測到新的數據庫庫和變量更改。

摘自：http://support.esri.com/cn/knowledgebase/techarticles/detail/40409

Cannot connect to database because the database client