While starting out of two DBs one DB getting error: ORA-01102: cannot mount database in EXCLUSIVE mo

While starting out of two DBs one DB getting error: ORA-01102: cannot mount database in EXCLUSIVE mode (文档 ID 2152488.1)

9876 文档 ID …     While starting out of two DBs one DB getting error: ORA-01102: cannot mount database in EXCLUSIVE mode (文档 ID 2152488.1) 转到底部 In this Document Symptoms   Cause   Solution Applies to: Oracle Database - Standard Edition - Version 11.2.0.3 to 12.1.0.2 [Release 11.2 to 12.1] Information in this document applies to any platform. Symptoms Have 2 databases (prod and test) on the same machine, when startup the DB "test" and then try to startup the DB "prod" following error is coming. [oracle@dbtest ~]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.3.0 Production on Tue Jun 7 08:18:15 2016 Copyright (c) 1982, 2011, Oracle. All rights reserved. Connected to an idle instance. SQL> startup ORA-32004: obsolete or deprecated parameter(s) specified for RDBMS instance ORACLE instance started. Total System Global Area 2622255104 bytes Fixed Size 2231232 bytes Variable Size 1627391040 bytes Database Buffers 973078528 bytes Redo Buffers 19554304 bytes ORA-01102: cannot mount database in EXCLUSIVE mode If the process done backwards, (startup first prod and then test, ) then get the same error ora-01102 Cause Both the DBs have same db_unique_name   DB_UNIQUE_NAME specifies a globally unique name for the database.   Solution Change DB_UNIQUE_NAME of one database: 1.) Shutdown Db (test DB) 2.) Shutdown Db (prod DB ) 3.) Startup DB ( test DB) 4.) alter system set db_unique_name='<<TEST_NEW>>' scope=spfile; 5.) Shutdown and startup the DB (Test DB). 6.) Startup DB ( Prod )