Hi,when I launch a java command, it gives me an memory allocation error.

[root@WEDOCOL01 ~]# cat /proc/version
Linux version 2.6.32-431.el6.x86_64 (mockbuild@x86-023.build.eng.bos.redhat.com) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-4) (GCC) ) #1 SMP Sun Nov 10 22:19:54 EST 2013

[root@WEDOCOL01 /]# java -version
Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x0000000758c00000, 176160768, 2097152, 0) failed; error='Cannot allocate memory' (errno=12)
Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x000000060a400000, 350224384, 2097152, 0) failed; error='Cannot allocate memory' (errno=12)
Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x00007fb3e4200000, 266338304, 2097152, 0) failed; error='Cannot allocate memory' (errno=12)
java version "1.7.0_45"
Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)

however, if you launch the java command, specifying a low heap size, it does not give me error:

[root@WEDOCOL01 /]# java -Xmx102M -version
java version "1.7.0_45"
Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)

but, just get up even slightly, the error returns, even if in reduced form

[root@WEDOCOL01 /]# java -Xmx103M -version
Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x00000000f4600000, 23068672, 2097152, 0) failed; error='Cannot allocate memory' (errno=12)
java version "1.7.0_45"
Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)

could you help me?

Thanks!

Not trying to be a smartbutt, but.. do you actually have enough memory?

how about running java as a normal user and NOT as root
from the "el6" part of Linux version 2.6.32-431.el6.x86_64 you are running ether RHEL6 or CentOS 6

so HOW!!! did you install java
there are two versions
the already installed OpenJDK 1.6 ( or 1.7) in CentOS6.5
and the Oracle JAVA

the two are incompatible

you need to use one OR the other

for the already installed ( should have been auto installed at time of OS install )
for 1.7
for the older 1.6
for Oracle's JAVA
you need to install the Oracle's software repo

it looks like you replaced the already installed OpenJDK with Oracles JAVA

did you also reset "alternatives" to reflect the change

the problem was the high cache memory configured:

[root@WEDOCOL01 ~]# free -m
total used free shared buffers cached
Mem: 32109 31852 257 0 282 30914
-/+ buffers/cache: 654 31455
Swap: 24575 0 24575