安装Oracle 11g和ORA-12154后出现Microsoft LoopBack Adapter警告

Question

I have this message while installing ORACLE 11g Release1 on Windows 7 64bit

before Installing the Oracle DB I created the "Microsoft LoopBack Adapter" & set the adapter to be the first order

Checking Network Configuration requirements ...

Check complete. The overall result of this check is: Failed <<<<

Problem: The install has detected that the primary IP address of the system is DHCP-assigned.

Recommendation: Oracle supports installations on systems with DHCP-assigned IP addresses; However, before you can do this, you must configure the Microsoft LoopBack Adapter to be the primary network adapter on the system. See the Installation Guide for more details on installing the software on systems configured with DHCP.

And After the installation done I tried to test the connection using SQL Plus I faced this error

-- This is the tnsnames.ora contants

# tnsnames.ora Network Configuration File: E:\ORACLE\Oracle_Base\product\11.1.0\db_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.

MTAHAPC =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = MTahaPC.lan)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = MTAHAPC)
    )
  )

-- this is the listener.ora

# listener.ora Network Configuration File: E:\ORACLE\Oracle_Base\product\11.1.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = MTahaPC.lan)(PORT = 1521))
    )
  )

Sorry, this is the first trail to install Oracle DB, and I get tired from it

Answer 1

That's a warning indicating that your system has DHCP allocation of IPs. This isn't strictly supported because when the service lookup happens, the TNSNAMES.ora file will have an entry for an IP which may or may not correspond to your system since DHCP would mean the IP may be assigned to other computers when the lease is up.

You can choose to ignore this by clicking on the checkbox next to it to indicate that you want to skip the test.