本文介绍了如何修改Oracle 11g RAC中ASM实例的memory_max_target和memory_target参数。首先，展示了如何通过SQL查询查看这两个参数的状态，然后详细描述了如何将memory_max_target从512M更改为4G，以及如何在不重启实例的情况下动态调整memory_target至1536M。此外，还提及了在调整内存后，重启ASM实例的必要性，以及通过crsctl命令停止和启动整个集群服务的过程。
ASM实例内存修改
memory_max_target(它为静态参数，修改完成后需要重启实例)
memory_target(它为动态参数，不需要重启实例)
SQL> select name,issys_modifiable from v$parameter where name='memory_max_target';
NAME ISSYS_MOD
-------------------------------------------------------------------------------- ---------
memory_max_target FALSE
SQL> select name,issys_modifiable from v$parameter where name='memory_target';
NAME ISSYS_MOD
-------------------------------------------------------------------------------- ---------
memory_target IMMEDIATE
查看ASM内存，并修改memory_max_target，由512M变为4G
[grid@db1 ~]$ sqlplus / as sysasm
SQL*Plus: Release 11.2.0.3.0 Production on Wed Sep 25 14:44:59 2013
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL> show parameter mem;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
memory_max_target big integer 512M
memory_target big integer 512M
SQL>
SQL>
SQL> alter system set memory_max_target=4G scope=spfile;
System altered.
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
查看crs状态（因为测试数据库实例与监听没有启动，如果生产环境中，建议一个个去停，保证业务正常运行）
[grid@db1 ~]$ crsctl stat res -t
--------------------------------------------------------------------------------
NAME TARGET STATE SERVER STATE_DETAILS
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA.dg
ONLINE ONLINE db1
ONLINE ONLINE db2
ora.FRA.dg
ONLINE ONLINE db1
ONLINE ONLINE db2
ora.LISTENER.lsnr
OFFLINE OFFLINE db1
OFFLINE OFFLINE db2
ora.OCR.dg
ONLINE ONLINE db1
ONLINE ONLINE db2
ora.asm
ONLINE ONLINE db1 Started
ONLINE ONLINE db2 Started
ora.gsd
OFFLINE OFFLINE db1
OFFLINE OFFLINE db2
ora.net1.network
ONLINE ONLINE db1
ONLINE ONLINE db2
ora.ons
ONLINE ONLINE db1
ONLINE ONLINE db2
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
1 ONLINE ONLINE db2
ora.cvu
1 ONLINE ONLINE db1
ora.db1.vip
1 ONLINE ONLINE db1
ora.db2.vip
1 ONLINE ONLINE db2
ora.dmzdb.db
1 OFFLINE OFFLINE Instance Shutdown
2 OFFLINE OFFLINE Instance Shutdown
ora.oc4j
1 ONLINE ONLINE db1
ora.scan1.vip
1 ONLINE ONLINE db2
[grid@db1 ~]$
停crs 全部节点
注：修改asm实例内存，需要重启asm实例
测试了下重启实例,需要停diskgroup相对重启crs要麻烦
故选择重启crs，生产环境可以一个个实例重启，保证业务能够运行
本例为了测试方便去，全部停止，全部启动
[root@db1 ~]# crsctl stop cluster -all
CRS-2673: Attempting to stop 'ora.crsd' on 'db1'
CRS-2673: Attempting to stop 'ora.crsd' on 'db2'
CRS-2790: Starting shutdown of Cluster Ready Services-managed resources on 'db1'
CRS-2673: Attempting to stop 'ora.db1.vip' on 'db1'
CRS-2673: Attempting to stop 'ora.FRA.dg' on 'db1'
CRS-2673: Attempting to stop 'ora.OCR.dg' on 'db1'
CRS-2673: Attempting to stop 'ora.DATA.dg' on 'db1'
CRS-2673: Attempting to stop 'ora.oc4j' on 'db1'
CRS-2673: Attempting to stop 'ora.cvu' on 'db1'
CRS-2790: Starting shutdown of Cluster Ready Services-managed resources on 'db2'
CRS-2673: Attempting to stop 'ora.db2.vip' on 'db2'
CRS-2673: Attempting to stop 'ora.FRA.dg' on 'db2'
CRS-2673: Attempting to stop 'ora.OCR.dg' on 'db2'
CRS-2673: Attempting to stop 'ora.DATA.dg' on 'db2'
CRS-2673: Attempting to stop 'ora.LISTENER_SCAN1.lsnr' on 'db2'
CRS-2677: Stop of 'ora.db1.vip' on 'db1' succeeded
CRS-2677: Stop of 'ora.db2.vip' on 'db2' succeeded
CRS-2677: Stop of 'ora.DATA.dg' on 'db1' succeeded
CRS-2677: Stop of 'ora.LISTENER_SCAN1.lsnr' on 'db2' succeeded
CRS-2673: Attempting to stop 'ora.scan1.vip' on 'db2'
CRS-2677: Stop of 'ora.FRA.dg' on 'db2' succeeded
CRS-2677: Stop of 'ora.scan1.vip' on 'db2' succeeded
CRS-2677: Stop of 'ora.FRA.dg' on 'db1' succeeded
CRS-2677: Stop of 'ora.DATA.dg' on 'db2' succeeded
CRS-2677: Stop of 'ora.oc4j' on 'db1' succeeded
CRS-2677: Stop of 'ora.cvu' on 'db1' succeeded
CRS-2677: Stop of 'ora.OCR.dg' on 'db1' succeeded
CRS-2673: Attempting to stop 'ora.asm' on 'db1'
CRS-2677: Stop of 'ora.OCR.dg' on 'db2' succeeded
CRS-2673: Attempting to stop 'ora.asm' on 'db2'
CRS-2677: Stop of 'ora.asm' on 'db1' succeeded
CRS-2677: Stop of 'ora.asm' on 'db2' succeeded
CRS-2673: Attempting to stop 'ora.ons' on 'db2'
CRS-2677: Stop of 'ora.ons' on 'db2' succeeded
CRS-2673: Attempting to stop 'ora.net1.network' on 'db2'
CRS-2677: Stop of 'ora.net1.network' on 'db2' succeeded
CRS-2792: Shutdown of Cluster Ready Services-managed resources on 'db2' has completed
CRS-2673: Attempting to stop 'ora.ons' on 'db1'
CRS-2677: Stop of 'ora.ons' on 'db1' succeeded
CRS-2673: Attempting to stop 'ora.net1.network' on 'db1'
CRS-2677: Stop of 'ora.net1.network' on 'db1' succeeded
CRS-2792: Shutdown of Cluster Ready Services-managed resources on 'db1' has completed
CRS-2677: Stop of 'ora.crsd' on 'db2' succeeded
CRS-2673: Attempting to stop 'ora.ctssd' on 'db2'
CRS-2673: Attempting to stop 'ora.evmd' on 'db2'
CRS-2673: Attempting to stop 'ora.asm' on 'db2'
CRS-2677: Stop of 'ora.crsd' on 'db1' succeeded
CRS-2673: Attempting to stop 'ora.ctssd' on 'db1'
CRS-2673: Attempting to stop 'ora.evmd' on 'db1'
CRS-2673: Attempting to stop 'ora.asm' on 'db1'
CRS-2677: Stop of 'ora.evmd' on 'db2' succeeded
CRS-2677: Stop of 'ora.ctssd' on 'db1' succeeded
CRS-2677: Stop of 'ora.evmd' on 'db1' succeeded
CRS-2677: Stop of 'ora.ctssd' on 'db2' succeeded
CRS-2677: Stop of 'ora.asm' on 'db2' succeeded
CRS-2673: Attempting to stop 'ora.cluster_interconnect.haip' on 'db2'
CRS-2677: Stop of 'ora.cluster_interconnect.haip' on 'db2' succeeded
CRS-2673: Attempting to stop 'ora.cssd' on 'db2'
CRS-2677: Stop of 'ora.cssd' on 'db2' succeeded
CRS-2677: Stop of 'ora.asm' on 'db1' succeeded
CRS-2673: Attempting to stop 'ora.cluster_interconnect.haip' on 'db1'
CRS-2677: Stop of 'ora.cluster_interconnect.haip' on 'db1' succeeded
CRS-2673: Attempting to stop 'ora.cssd' on 'db1'
CRS-2677: Stop of 'ora.cssd' on 'db1' succeeded
启动crs 全部节点
[root@db1 ~]# crsctl start cluster -all
CRS-2672: Attempting to start 'ora.cssdmonitor' on 'db1'
CRS-2672: Attempting to start 'ora.cssdmonitor' on 'db2'
CRS-2676: Start of 'ora.cssdmonitor' on 'db1' succeeded
CRS-2672: Attempting to start 'ora.cssd' on 'db1'
CRS-2676: Start of 'ora.cssdmonitor' on 'db2' succeeded
CRS-2672: Attempting to start 'ora.diskmon' on 'db1'
CRS-2672: Attempting to start 'ora.cssd' on 'db2'
CRS-2672: Attempting to start 'ora.diskmon' on 'db2'
CRS-2676: Start of 'ora.diskmon' on 'db1' succeeded
CRS-2676: Start of 'ora.diskmon' on 'db2' succeeded
CRS-2676: Start of 'ora.cssd' on 'db1' succeeded
CRS-2672: Attempting to start 'ora.ctssd' on 'db1'
CRS-2676: Start of 'ora.cssd' on 'db2' succeeded
CRS-2672: Attempting to start 'ora.ctssd' on 'db2'
CRS-2672: Attempting to start 'ora.cluster_interconnect.haip' on 'db2'
CRS-2676: Start of 'ora.ctssd' on 'db1' succeeded
CRS-2672: Attempting to start 'ora.evmd' on 'db1'
CRS-2672: Attempting to start 'ora.cluster_interconnect.haip' on 'db1'
CRS-2676: Start of 'ora.ctssd' on 'db2' succeeded
CRS-2672: Attempting to start 'ora.evmd' on 'db2'
CRS-2676: Start of 'ora.evmd' on 'db1' succeeded
CRS-2676: Start of 'ora.evmd' on 'db2' succeeded
CRS-2676: Start of 'ora.cluster_interconnect.haip' on 'db1' succeeded
CRS-2672: Attempting to start 'ora.asm' on 'db1'
CRS-2676: Start of 'ora.cluster_interconnect.haip' on 'db2' succeeded
CRS-2672: Attempting to start 'ora.asm' on 'db2'
CRS-2676: Start of 'ora.asm' on 'db1' succeeded
CRS-2672: Attempting to start 'ora.crsd' on 'db1'
CRS-2676: Start of 'ora.crsd' on 'db1' succeeded
CRS-2676: Start of 'ora.asm' on 'db2' succeeded
CRS-2672: Attempting to start 'ora.crsd' on 'db2'
CRS-2676: Start of 'ora.crsd' on 'db2' succeeded
[root@db1 ~]#
查看crs状态，发现crs启动正常
[grid@db1 ~]$ crsctl stat res -t
--------------------------------------------------------------------------------
NAME TARGET STATE SERVER STATE_DETAILS
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA.dg
ONLINE ONLINE db1
ONLINE ONLINE db2
ora.FRA.dg
ONLINE ONLINE db1
ONLINE ONLINE db2
ora.LISTENER.lsnr
OFFLINE OFFLINE db1
OFFLINE OFFLINE db2
ora.OCR.dg
ONLINE ONLINE db1
ONLINE ONLINE db2
ora.asm
ONLINE ONLINE db1 Started
ONLINE ONLINE db2 Started
ora.gsd
OFFLINE OFFLINE db1
OFFLINE OFFLINE db2
ora.net1.network
ONLINE ONLINE db1
ONLINE ONLINE db2
ora.ons
ONLINE ONLINE db1
ONLINE ONLINE db2
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
1 ONLINE ONLINE db2
ora.cvu
1 ONLINE ONLINE db1
ora.db1.vip
1 ONLINE ONLINE db1
ora.db2.vip
1 ONLINE ONLINE db2
ora.dmzdb.db
1 OFFLINE OFFLINE Instance Shutdown
2 OFFLINE OFFLINE Instance Shutdown
ora.oc4j
1 ONLINE ONLINE db1
ora.scan1.vip
1 ONLINE ONLINE db2
1 ONLINE ONLINE db2
db1节点上查看mem,此时memory_max_target变为4G
修改memory_target ,由512M变为1536M
[grid@db1 ~]$ sqlplus / as sysasm
SQL*Plus: Release 11.2.0.3.0 Production on Wed Sep 25 14:54:41 2013
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL> show parameter mem;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
memory_max_target big integer 4G
memory_target big integer 512M
SQL>
SQL> alter system set memory_target=1536m scope=both sid='+ASM1';
System altered.
SQL> show parameter mem;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
memory_max_target big integer 4G
memory_target big integer 1536M
db2节点上查看mem,此时memory_max_target变为4G
修改memory_target，由512M变为1536M
[grid@db2 ~]$ sqlplus / as sysasm
SQL*Plus: Release 11.2.0.3.0 Production on Wed Sep 25 22:52:53 2013
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL>
SQL> show parameter mem;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
memory_max_target big integer 4G
memory_target big integer 512M
SQL> alter system set memory_target=1536m scope=both sid='+ASM2';
System altered.
SQL> show parameter mem;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
memory_max_target big integer 4G
memory_target big integer 1536M
SQL>
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