只能启动个中一个节点， 启动oracle 11g rac数据库时呈现以下错误， Oracle. All rights reserved. Connected to an idle instance. SQL startup ORA-01102: cannot mount database in EXCLUSIVE mode --没有修改参数前报错，大概是以前修改cluster_database这个参数引起的.在oralc rac架构这个参数必需配置为TRUE. 错误信息: ORA-01102: cannot mount database in EXCLUSIVE mode 办理要领: rac1节点: SQL show parameter cluster_database; NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ cluster_database boolean FALSE cluster_database_instances integer 1 SQL alter system set cluster_database=true scope=spfile; System altered. SQL shutdown immediate Database closed. Database dismounted. ORACLE instance shut down. SQL startup ORACLE instance started. Total System Global Area 830930944 bytes Fixed Size 2257800 bytes Variable Size 566234232 bytes Database Buffers 260046848 bytes Redo Buffers 2392064 bytes Database mounted. Database opened. SQL select open_mode from v$database; OPEN_MODE -------------------- READ WRITE SQL show parameter cluster_database; NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ cluster_database boolean TRUE cluster_database_instances integer 2 SQL rac2节点: [oracle@rac2 ~]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Thu Sep 29 10:14:16 2016 Copyright (c) 1982。

修改后启动乐成 SQL startup ORACLE instance started. Total System Global Area 830930944 bytes Fixed Size 2257800 bytes Variable Size 599788664 bytes Database Buffers 226492416 bytes Redo Buffers 2392064 bytes Database mounted. Database opened. SQL select open_mode from v$database; OPEN_MODE -------------------- READ WRITE SQL show parameter cluster_database; NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ cluster_database boolean TRUE cluster_database_instances integer 2 ，另一个节点启动不了， 2013，。