ORA-00845: MEMORY_TARGET not supported on this system

While converting Non-RAC to RAC database getting below error.




[oracle@rac01 bin]$ ./rconfig contorac.xml
Converting Database "oratech" to Cluster Database. Target Oracle Home: /ora/orac                         le/product/12.1.0/dbhome_1. Database Role: PRIMARY.
Setting Data Files and Control Files
Adding Trace files
Adding Database Instances
Adding Redo Logs
Enabling threads for all Database Instances
Setting TEMP tablespace
Adding UNDO tablespaces
Setting Fast Recovery Area
Updating Oratab
Creating Password file(s)
Configuring related CRS resources
Starting Cluster Database
<?xml version="1.0" ?>
<RConfig version="1.1" >
<ConvertToRAC>
    <Convert>
      <Response>
        <Result code="1" >
          Got Exception
        </Result>
       <ErrorDetails>
             oracle.sysman.assistants.rconfig.engine.CRSStartupException: PRCR-1079 : Failed to start resource ora.oratech.db
CRS-5017: The resource action "ora.oratech.db start" encountered the following error:
ORA-00845: MEMORY_TARGET not supported on this system
. For details refer to "(:CLSN00107:)" in "/ora/grid/log/rac02/agent/crsd/oraagent_oracle/oraagent_oracle.log".

CRS-2674: Start of 'ora.oratech.db' on 'rac02' failed
CRS-2632: There are no more servers to try to place resource 'ora.oratech.db' on that would satisfy its placement policy
Operation Failed. Refer logs at /ora/oracle/oracle12/cfgtoollogs/rconfig/rconfig_12_28_16_18_43_14.log for more details.


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Solution:





[oracle@rac01 bin]$ df -h

Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1        20G   18G  994M  95% /
tmpfs           2.0G  1.1G  901M  55% /dev/shm
/dev/sda2        96G   27G   66G  29% /ora
/dev/sda3        20G   60M   19G   1% /tmp

# umount tmpfs
# mount -t tmpfs shmfs -o size=4G /dev/shm


# /etc/fstab

# Created by anaconda on Tue Dec 20 17:07:44 2016
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=db2938b3-db31-4abf-ac1e-9e6869f825c9 /                       ext4    defaults        1 1
UUID=ce2cece9-fa18-458c-a384-3fec9b507b2e /ora                    ext4    defaults        1 2
UUID=99e7a8dc-a14a-4a85-ad67-b2459043af3d /tmp                    ext4    defaults        1 2
UUID=c8915969-3315-4ba1-a941-0cc32240707d swap                    swap    defaults        0 0
tmpfs                   /dev/shm                tmpfs   size=4G        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0

#reboot