Naming Conventions
The following conventions are valid for this documentation.
Terminology
Term |
Meaning |
TREX instance |
One installation of the TREX server software |
TREX host |
Host on which the TREX server software is installed |
Server |
Program that offers services (such as an index server or queue server) |
Master host |
Host on which a master index server is running |
Slave host |
Host on which a slave index server is running |
Backup host |
Host on which a backup index server is running |
Variables
Variable |
Meaning |
<SAPSID> |
System ID in uppercase letters |
<sapsid> |
System ID in lowercase letters |
<TREX_DIR> |
Installation directory for a TREX instance. The path to the directory is: · On UNIX /usr/sap/<SAPSID>/TRX<instance_number> · On Windows <disk_drive>:\usr\sap\<SAPSID>\TRX<instance_number> |
User <sapsid>adm |
Operating system user that you log on with to administrate TREX. |
User SAPService<SAPSID> |
Operating system user under which the TREX processes run. |
User <j2eeadm> |
Operating system user that you use to log on to the host on which the J2EE Engine is running. |
Abbreviations
The following abbreviations are used in the graphics.
Abbreviation |
Meaning |
Master servers |
|
M NS |
Master name server |
M IS |
Master index server |
M QS |
Master queue server |
Slave server |
|
S NS |
Slave name server |
S IS |
Slave index server |
Backup server |
|
B IS |
Backup index server |
B QS |
Backup queue server |
Other servers |
|
RFC |
RFC server |
WS |
Web server |
PP |
Preprocessor |
Data |
|
MI |
Master index |
SI |
Slave index |
SN |
Index snapshot |
Q |
Queue |
T |
Topology file |
Commands
Commands such as script calls are sometimes distributed over several lines in this documentation. When you execute these commands, enter them as one line.