How to check Oracle HTTP Server (OHS) component version?

Below are the possible ways to find Oracle HTTP Server (OHS) version

1) Go to $OHS_HOME/bin

Run ./httpd -version

It should return result as below based on the version of OHS

$ ./httpd -version
Server version: Oracle-HTTP-Server/2.2.15 (Unix)
Server built:   Apr  2 2011 23:51:27
Server label:   APACHE_11.1.1.5.0_LINUX.X64_110325.2001

Please note:

Ensure LD_LIBRARY_PATH variable is set and include all the libraries in the path.

Example: $export LD_LIBRARY_PATH=/(middlewarehome)/Oracle_WT/lib/

Else you will get error as below when running httpd -version command.

./httpd: error while loading shared libraries: libaprutil-1.so.0: cannot open shared object file: No such file or directory

2) Check in Enterprise Manager

- Login to Enterprise Manager console /em.

- Select ohs component (eg: ohs1, ohs2 ....)

- Right click on it and select General Information

- You will see the version of OHS

- However this version info may not be reliable as it may show you can incorrect version in EM specially after upgrades

Eg: If you upgrade from 11.1.1.3 to 11.1.1.5, OHS version may wrongly show as 11.1.1.2 or 11.1.1.4. This is a possible bug.

Even if you have run below commands after OHS upgrade, incorrect version may show up in EM.

 ./opmnctl unregisterinstance

 ./opmnctl redeploy

 ./opmnctl registerinstance

Check out for more information from this Oracle Support Doc ID 260449.1

OHS Server Log Location

ORACLE_INSTANCE/diagnostics/logs/OHS/component_name