I am herewith explaining the step by step way out for updating TREX server, which is very much required now in days in order to incorporate with dependent peripheral SAP SW Components . I am trying to architect the procedure based on one of my recent activity which includes following scenario :-
1. Old TREX Server : 7.10 SP40
2. Update Level : 7.10 SP55 (latest one)
3. OS: Windows 2008 (64 bit)
4. Number of connected SAP system RFCs : 3
Step 1: Check the current version of TREX in connected SAP system though TREXADMIN T-Code.
Step 2: Download the latest patch level from SMP . Follow https://service.sap.com/swdc > Support Packages and Patches > Browse our Download Catalog > SAP NetWeaver and complementary products> SAP Netweaver > SAP NETWEAVER 7.0 > Entry By Components > Search & Classification (TREX) > TREX 7.10 > Windows on X64 64 bit > TREX71_55-10004511.SAR
Step 3: Then extract it with SAPCAR with following command:-
sapcar -xvf <file name.SAR>
Step 4: Stop TREX service and also the Trex Admin console (if running somewhere).
Step 5: Execute SAPinst from the extracted directory :-
Step 6 :Choose “Update a TREX system” option :-
You can take restart of TREX server manually later on though MMC.
Step 7: Restart the TREX server through MMC and then you can check the latest version again in TREXADMIN.
NB: TREX Upgrade process from 7.1- PL 58 onwards, you can follow updated document – http://scn.sap.com/docs/DOC-69966