【翻译自mos文章】11.2.0.4及更高版本的asm实例中MEMORY_TARGET 和 MEMORY_MAX_TARGET的默认值和最小值
2016-01-27 21:33
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【翻译自mos文章】11.2.0.4及更高版本的asm实例中MEMORY_TARGET 和 MEMORY_MAX_TARGET的默认值和最小值
来源于:
Default and Minimum MEMORY_TARGET & MEMORY_MAX_TARGET Value for ASM 11.2.0.4 and Onwards (文档 ID 1982132.1)
Information in this document applies to any platform.
onwards.
2) If ASM MEMORY_TARGET & MEMORY_MAX_TARGET is set to a lower value < 1GB,
then MEMORY_TARGET & MEMORY_MAX_TARGET are automatically reset back to its default value MEMORY_TARGET= 1GB:
3) Also, ASM will report in the ASM alert.log the following banner (during the ASM instance startup):
on 11.2.0.4 release andonwards:
2) And if you attempt to set a value lower, that value is automatically reset back to 1GB.
to be set = 1GB or higher.
来源于:
Default and Minimum MEMORY_TARGET & MEMORY_MAX_TARGET Value for ASM 11.2.0.4 and Onwards (文档 ID 1982132.1)
APPLIES TO:
Oracle Database - Enterprise Edition - Version 11.2.0.4 to 12.1.0.2 [Release 11.2 to 12.1]Information in this document applies to any platform.
SYMPTOMS
1) ASM MEMORY_TARGET & MEMORY_MAX_TARGET cannot be set less than 1GB on 11.2.0.4 release andonwards.
2) If ASM MEMORY_TARGET & MEMORY_MAX_TARGET is set to a lower value < 1GB,
then MEMORY_TARGET & MEMORY_MAX_TARGET are automatically reset back to its default value MEMORY_TARGET= 1GB:
$> sqlplus / as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Sun Feb 8 19:17:32 2015 Copyright (c) 1982, 2013, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production With the Real Application Clusters and Automatic Storage Management options SQL> show parameter memory_target NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ memory_target big integer 1G SQL> show parameter memory_max_target NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ memory_max_target big integer 1G
3) Also, ASM will report in the ASM alert.log the following banner (during the ASM instance startup):
MEMORY_TARGET defaulting to 1128267776.
CAUSE
1) The following enhancement requests stated that the default & minimum value for MEMORY_MAX_TARGET & MEMORY_TARGET is now 1GB startingon 11.2.0.4 release andonwards:
<-o-> Bug 13563723 - INCREASE THE DEFAULT MEMORY_TARGET FOR ASM <-o-> Bug 17460037 - MEMORY_TARGET DEFAULTING TO 1128267776
2) And if you attempt to set a value lower, that value is automatically reset back to 1GB.
SOLUTION
Starting on 11.2.0.4 release and onwards ASM MEMORY_MAX_TARGET & MEMORY_TARGET needto be set = 1GB or higher.
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