在给Oracle 10g搭建dg使用rman复制数据库时，在连接辅助实例时出错，错误信息如下所示:
[oracle@oracle11g admin]$ rman target sys/zzh_2046@test auxiliary sys/system@aux_test catalog rman/rman@jy
Recovery Manager: Release 10.2.0.5.0 - Production on Tue Mar 17 10:50:22 2015
Copyright (c) 1982, 2007, Oracle. All rights reserved.
connected to target database: TEST (DBID=2168949517)
connected to recovery catalog database
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00554: initialization of internal recovery manager package failed
RMAN-04006: error from auxiliary database: ORA-00600: internal error code, arguments: [15435], [SYS], [X$STANDARD], [], [], [], [], []
ORA-04031: unable to allocate 1040 bytes of shared memory ("shared pool","X$STANDARD","PL/SQL DIANA","PAR.C:parapt:Page")
RMAN-04015: error setting target database character set to ZHS16GBK
从上面的错误信息可以看到ORA-04031是因为不能给共享内存分配1040 bytes大小的内存。如是直接用rman连接辅助实例也出现错误，错误信息如下所示:
[oracle@jingyong1 ~]$ rman target sys/system@aux_test
Recovery Manager: Release 10.2.0.5.0 - Production on Tue Mar 17 10:51:28 2015
Copyright (c) 1982, 2007, Oracle. All rights reserved.
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00554: initialization of internal recovery manager package failed
RMAN-04005: error from target database:
ORA-00600: internal error code, arguments: [15435], [SYS], [X$STANDARD], [], [], [], [], []
ORA-04031: unable to allocate 1040 bytes of shared memory ("shared pool","X$STANDARD","PL/SQL DIANA","PAR.C:parapt:Page")
RMAN-04015: error setting target database character set to ZHS16GBK
在MOS上找到了ORA-4031 During Startup Nomount using RMAN without parameter file [ID 1176443.1]内容如下:
Applies to:
Oracle Database - Enterprise Edition - Version 11.2.0.1 and later
Information in this document applies to any platform.
***Checked for relevance on 08-May-2013***
Symptoms
RMAN startup nomount failed with ORA-4031
Customer was testing RMAN backup/restore in Exadata.
Customer firstly backup the database to tape and then remove all the datafiles, spfile, controlfiles for testing.
Then during the recover, customer connected RMAN with nocatalog and try to "startup nomount", then ORA-4031 occured.
==================== Log ========================
oracle@hkfop011db01:/home/oracle
$ export ORACLE_SID=TEST
oracle@test011db01:/home/oracle
$ rman target / nocatalog
Recovery Manager: Release 11.2.0.1.0 - Production on Thu Jul 8 20:45:10 2010
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
connected to target database (not started)
RMAN> startup nomount
startup failed: ORA-01078: failure in processing system parameters
LRM-00109: could not open parameter file '/oracle/product/11.2.0/db_1/dbs/initTEST.ora'
starting Oracle instance without parameter file for retrieval of spfile
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of startup command at 07/08/2010 20:45:19
RMAN-04014: startup failed: ORA-04031: unable to allocate 111264 bytes of shared memory ("shared pool","unknown object","sga heap(1,0)","KEWS sesstat values")
Cause
RMAN has failed to start a dummy instance without pfile.
Default values used for the dummy instance are not enough to start the instance up.
This is reported in Bug 9680987 - RMAN CANNOT START DATABASE WITHOUT PARAMETER FILE
Solution
There are two possible solutions:
1- Create temporary init.ora file (/oracle/product/11.2.0/db_1/dbs/initTEST.ora) with the following parameters:
db_name=
large_pool_size=100m
shared_pool_size=250m
db_cache_size=10m
2- Set environment variable ORA_RMAN_SGA_TARGET before executing rman. For example:
$ export ORA_RMAN_SGA_TARGET=350
这篇文章给出了两种解决方法，一种是增加内存参数，一种是设置环境变量，适用版本是11.2.0.1及其以后版本，我这里是oracle 10.2.0.5,因为第二种方法简单，所以尝试使用设置环境变量的方法:
[oracle@jingyong1 ~]$ export ORA_RMAN_SGA_TARGET=350
[oracle@jingyong1 ~]$ rman target sys/system@aux_test
Recovery Manager: Release 10.2.0.5.0 - Production on Tue Mar 17 10:51:46 2015
Copyright (c) 1982, 2007, Oracle. All rights reserved.