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memory target

Posted on 2012-09-15
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Last Modified: 2012-09-18
QL> create pfile from spfile;

File created.

SQL> startup
ORA-00845: MEMORY_TARGET not supported on this system
SQL> exit
Disconnected
[oracle@wtu dbs]$ ls
hc_DBUA0.dat  init.ora      lkPROS     peshm_DBUA0_0  spfileorcl.ora
hc_orcl.dat   initpros.ora  orapworcl  peshm_orcl_0   spfilepros.ora
hc_pros.dat   lkORCL        orapwpros  peshm_pros_0
[oracle@wtu dbs]$ vi initpros.ora
[oracle@wtu dbs]$ export ORACLE_SID=pros
[oracle@wtu dbs]$ sqlplus /nolog

SQL*Plus: Release 11.2.0.1.0 Production on Sat Sep 15 09:59:49 2012

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

SQL> startup
ORA-01031: insufficient privileges
SQL> conn / as sysdba
Connected to an idle instance.
SQL> startup
ORA-00845: MEMORY_TARGET not supported on this system
SQL>
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Question by:tomvv
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Accepted Solution

by:
Richard Olutola earned 2000 total points
ID: 38403013
Make sure that shared memory filesystem /dev/shm is set to at least max_target parameter value. This is a new feature in 11g.

To set /dev/shm to 10G for instance:

# mount -t tmpfs shmfs -o size=10g /dev/shm

Also, to make this change persistent across system restarts, add an entry in /etc/fstab similar to the following:

shmfs /dev/shm tmpfs size=10g 0

Hope this helps.
R.
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