ORA-28547：connection to server failed,probable Oracle Net admin

listener.ora中注释掉PROGRAM = extproc

ORA-09925: Unable to create audit trail file

show parameter audit_file_dest

mkdir parameter audit_file_dest中位置

ORA-01157/ORA-01110:

RAC1搭建DG后，关闭RAC1+DG库，RAC2数据库无法打开到open状态

startup nomount;

alter database mount;

alter database open;

ERROR at line 1:

ORA-01157: cannot identify/lock data file 6 - see DBWR trace file

ORA-01110: data file 6:

'/oracle/app/oracle/product/11.2.0/db_1/dbs/oradataorclGLOBAL.DBF'

alter database datafile 6 offline;

alter database open;

Database altered.

ORA-10456:

SQL> startup nomount  

ORACLE instance started.  

Total System Global Area  417546240 bytes  

Fixed Size                  2228944 bytes  

Variable Size             318770480 bytes  

Database Buffers           92274688 bytes  

Redo Buffers                4272128 bytes  

SQL> alter database mount standby database;  

Database altered.  

SQL> alter database open read only;  

Database altered.  

SQL>  alter database recover managed standby database using current logfile disconnect from session;  

Database altered. 

PRVG-1013：

rac环境添加节点，预检不通过，无法继续安装，但实际已满足安装条件，比如：/u01/11.2.0/grid目录存在，但预检时却检查失败

设置环境变量IGNORE_PREADDNODE_CHECKS=Y