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:
|
|
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.