RAC DBCA 找不到共享磁盘

   通过vmware workstation 走iscsi协议。安装RAC 集群架构，DBCA 时不能识别ASM 共享存储（按理来说这一版都是权限的问题）。同一时候，本想通过RMAN 做单实例 --> 迁移 -->RAC, 单在创建ASM共享存储spfile參数文件时，一直报错，可是涉及的crs 服务，grid,oracle 权限都存在。

(二)  报错信息： SQL> create spfile=‘+DATA/DOMINIC/PARAMETERFILE/spfiledominic.ora‘ from pfile=‘/u01/soft/spfile_5_04‘; create spfile=‘+DATA/DOMINIC/PARAMETERFILE/spfiledominic.ora‘ from pfile=‘/u01/soft/spfile_5_04‘ * ERROR at line 1: ORA-17502: ksfdcre:4 Failed to create file +DATA/DOMINIC/PARAMETERFILE/spfiledominic.ora ORA-01017: invalid username/password; logon denied
---这里，事实上 仅仅有真正的spfile參数放在ASM存储里，其它节点RAC1 ....RACn 都仅仅是一个地址的映射。
当权限组正常的话，以上命令是能够运行，同一时候各节点在$ORACLE_HOME/dbs/initORACLE_SID.ora 
 echo "SPFILE=‘+DATA/ANQING/PARAMETERFILE/spfildominic.ora‘" > /u01/app/oracle/product/11.2/db_1/dbs/initdominic1.ora 
(三)  故障权限排查：    oracle 家文件夹bin下权限，及所属组 [oracle@dominic3 ~]$ cd /u01/app/oracle/product/11.2/dbhome_1/bin/ [oracle@dominic3 bin]$ ll oracle -rwxrwxr-x 1 oracle asmadmin 239627031 May 17 17:32 oracle      ---注意这里Oracle 权限，组， 路径！
   grid 家文件夹bin下权限，及所属组 [oracle@dominic3 bin]$ cd /u01/app/11.2/grid/bin/ [oracle@dominic3 bin]$ ll oracle -rwsrwsr-x 1 grid oinstall 209914869 May 17 15:58 oracle             ---注意这里Oracle 权限，组， 路径！

[root@dominic3 ~]# ls /dev/oracleasm/disks/* -l brw-rw---- 1 grid asmadmin 8, 17 May 27 15:37 /dev/oracleasm/disks/DATA01 brw-rw---- 1 grid asmadmin 8, 81 May 27 15:37 /dev/oracleasm/disks/DATA02 brw-rw---- 1 grid asmadmin 8, 97 May 27 15:37 /dev/oracleasm/disks/LOG01 brw-rw---- 1 grid asmadmin 8, 65 May 27 15:37 /dev/oracleasm/disks/LOG02 brw-rw---- 1 grid asmadmin 8, 113 May 27 15:37 /dev/oracleasm/disks/OCR01 brw-rw---- 1 grid asmadmin 8, 33 May 27 15:37 /dev/oracleasm/disks/OCR02 brw-rw---- 1 grid asmadmin 8, 49 May 27 15:37 /dev/oracleasm/disks/OCR03
[root@dominic3 ~]# su - grid [grid@dominic3 ~]$ sqlplus / as sysasm SQL> select GROUP_NUMBER,DISK_NUMBER,MOUNT_STATUS,HEADER_STATUS,MODE_STATUS,STATE,PATH from v$asm_disk; SQL> /    2 0 CACHED MEMBER ONLINE NORMAL ORCL:DATA01    2 1 CACHED MEMBER ONLINE NORMAL ORCL:DATA02    3 0 CACHED MEMBER ONLINE NORMAL ORCL:LOG01    3 1 CACHED MEMBER ONLINE NORMAL ORCL:LOG02    1 0 CACHED MEMBER ONLINE NORMAL ORCL:OCR01    1 1 CACHED MEMBER ONLINE NORMAL ORCL:OCR02    1 2 CACHED MEMBER ONLINE NORMAL ORCL:OCR03
我把Oracle 及时加入到asmadmin 组也是这样 [grid@dominic3 ~]$ id oracle uid=1101(oracle) gid=1000(oinstall) groups=1000(oinstall),1200(asmadmin),1201(asmdba),1300(dba),1301(oper) [grid@dominic3 ~]$ id grid uid=1100(grid) gid=1000(oinstall) groups=1000(oinstall),1200(asmadmin),1201(asmdba),1202(asmoper)
 -- grid 须要增加DBA 权限组。  ASMDBA       GRID,ORACLE  ASM的SYSDBA   OSDBA FOR ASM  ASMADMIN  GRID         SYSASM     OSASM ASMOPER      GRID                ASM的SYSOPER  OSOPER FOR ASM
最后的结果是： ASMDBA, ASMOPER, ASMADMIN 在创建grid 用户时。权限组设置颠倒所致。

RAC DBCA 找不到共享磁盘

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