There might be requirement from Oracle to check the HTTP server level MLR Patch Set, we can use the below information to get the deatils.

RUN command  "$IAS_ORACLE_HOME/Apache/Apache/bin/httpd -v"


httpd -v
Output:Server version: Oracle HTTP Server Powered by Apache/1.3.19 (Unix)
Server built:   Dec  6 2006 17:56:59 (iAS 1.0.2.2.2 rollup 5)

The meaning of the various rollup are as below

Oracle HTTP Server Patch List

Release
Rollup Version
iAS Patch Number
Applications Interop patch
Patch Included in Rapid Install
1.0.2.2.2
Rollup 5
4393827
4104924
None
1.0.2.2.2
Rollup 4
3072811
3239694
11.5.10
1.0.2.2.2
Rollup 3
2674529
2757379
11.5.9
1.0.2.2.2
Rollup 2
2488351,2362590,2517475
2641718
11.5.8
1.0.2.2.2
Rollup 1
2120450
2549489
11.5.7
1.0.2.1S
Rollup 1
2050415
3035685
None