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Operating Systems Linux Red Hat Server Hang in Linux RHEL 5.5 Post 302925452 by achenle on Monday 17th of November 2014 09:48:24 AM
Old 11-17-2014
Code:
dmesg | grep -i killed

What's the status of memory overcommit?

Code:
echo /proc/sys/vm/overcommit_memory

For a database server, memory overcommit should be disabled:

Code:
sysctl vm.overcommit_memory=2
echo "vm.overcommit_memory=2" >> /etc/sysctl.conf

You do not want to overcommit memory on a server where long-lived processes WILL use the memory they allocate.

Otherwise the OOM killer will kill important processes, possibly hanging the machine. And when a machine is hung badly, it may not even be able to log anything or record SAR data.

If you find your database or other processes no longer start up after you disable memory overcommit, you were using too much memory in the first place. Buy more RAM and/or add swap.
 

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OCI_SERVER_VERSION(3)													     OCI_SERVER_VERSION(3)

oci_server_version - Returns the Oracle Database version

SYNOPSIS
string oci_server_version (resource $connection) DESCRIPTION
Returns a string with the Oracle Database version and available options PARAMETERS
o $connection - RETURN VALUES
Returns the version information as a string or FALSE on error. EXAMPLES
Example #1 oci_server_version(3) example <?php $conn = oci_connect("hr", "hrpwd", "localhost/XE"); echo "Server Version: " . oci_server_version($conn); // Displays: // Server Version: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production // With the Partitioning, OLAP, Data Mining and Real Application Testing option oci_close($conn); ?> NOTES
Note In PHP versions before 5.0.0 you must use ociserverversion(3) instead. This old name still can be used. However it is deprecated and not recommended. SEE ALSO
oci_client_version(3). PHP Documentation Group OCI_SERVER_VERSION(3)
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