ORA-28547：connection to server failed,probable Oracle Net admin
listener.ora中註釋掉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後，關閉RAC1+DG庫，RAC2數據庫無法打開到open狀態
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/<oracle_base>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環境添加節點，預檢不通過，無法繼續安裝，但實際已滿足安裝條件，比如：/u01/11.2.0/grid目錄存在，但預檢時卻檢查失敗
設置環境變量IGNORE_PREADDNODE_CHECKS=Y