使用plsql訪問遠程數據庫

1、plsql輸入ip端口數據庫實例名直接登錄：

Username：用戶名，如：scott
Password：用戶對應密碼，如：tiger
Database：數據庫位置，
  語法爲：ip:端口號/數據庫實例名
  如：192.168.1.156:1521/orcl

---

2、修改tnsnames.ora文件

在自己的Oracle安裝目錄找到以下文件：tnsnames.ora

例如：

D:\app\Administrator\product\11.1.0\db_1\NETWORK\ADMIN\tnsnames.ora

打開文件添加以下內容：

非集羣，數據庫在一臺服務器上：

名稱 =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = ip地址)(PORT = 端口號))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = 數據庫實例)
    )
  )

//例如下面這個
KZJN =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.1.162.146)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = orcl)
    )
  )

集羣，數據庫在多臺服務器上：

名稱 =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = ip地址1)(PORT = 對應端口號))
    (ADDRESS = (PROTOCOL = TCP)(HOST = ip地址1)(PORT = 對應端口號))
    (LOAD_BALANCE = yes)
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SID = 數據庫實例)
    )
  )

//例如下面這個
JQ =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 10.1.190.88)(PORT = 1521))
    (ADDRESS = (PROTOCOL = TCP)(HOST = 10.1.190.99)(PORT = 1521))
    (LOAD_BALANCE = yes)
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SID = tmis21)
    )
  )

保存修改後打開plsql，在數據庫下拉列表中回多出新添加的內容，選擇對應的下拉項，填寫用戶名密碼即可。