oracle asm 磁碟組mount不成功總結

     oracle asm磁碟組mount不成功,以我自己遇到的問題

可以總結為以下幾個方面：

1.磁碟組某個磁碟的磁碟頭資訊丟失

ERROR at line 1:

ORA-15032: not all alterations performed

ORA-15040: diskgroup is incomplete

ORA-15042: ASM disk "1" is missing

2.磁碟組內file directory盤資訊丟失

             ERROR at line 1:

     ORA-15032: not all alterations performed

     ORA-15063: ASM discovered an insufficient number of disks for diskgroup "DATA";

3.磁碟組內某個磁碟的許可權不對

                    ERROR at line 1:

       ORA-15032: not all alterations performed

       ORA-15040: diskgroup is incomplete

       ORA-15042: ASM disk "1" is missing

  如果還有其他原因，請大家列出。