Troubleshooting guide

7 — 5620 SAM system redundancy
Alcatel-Lucent 5620 Service Aware Manager 7-7
5620 SAM
System Administrator Guide
The following occur after a server activity switch:
• If automatic database realignment is enabled, the new primary server performs a
database switchover.
• The GUI clients communicate with the new primary server and display the
current redundancy status.
• The OSS clients must connect to the new primary server.
• The new primary server establishes communication and synchronizes
information with the 5620 SAM auxiliary servers.
• The auxiliary servers exchange information with the new primary server; no
auxiliary servers exchange information with the former primary server.
• The Preferred or Reserved state of each auxiliary server changes, depending on
the configuration of the new primary server.
• The new primary server attempts to redeploy the client requests that the former
primary server did not complete before the activity switch.
Database switchovers
A 5620 SAM administrator directs a main server to initiate a database switchover.
Figure 7-6 shows the main server and database roles before a database switchover.
Figure 7-6 Server and database roles before database switchover
Figure 7-7 shows the server and database roles after a database switchover.
Figure 7-7 Server and database roles after database switchover
13463
Primary database Standby database
Standby
server
Primary
server
17826
13463
Standby
database
Primary database
Read/writes
to primary
Standby
server
Primary
server
17891
Release 12.0 R6 | November 2014 | 3HE 08861 AAAF TQZZA Edition 01