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Adabas: Version 6.1,10.0
You want to create a distributed database using Adabas D.
Important : It is obviously mandatory to have a separate licence for every node within the distributed database. The distribution of database is offficially an unsupported feature in version 10.0 .
Please make sure that it is possible to create a connection between the various machines.
In order to test this you can use commands like ping
or try a telnet session
to the distant machines.
Start the RemoteSQL server (x_server start
).
Important : Please take care to set the hostname of every single machine that takes part
in the distributed database to its fully qualified domain name. Example : The machine Database1
in the domain distributed.database.de
must be set to the full domainname using the command
hostname Database1.distributed.database.de
. If this is not done, an error may occur when establishing
the connection during the start-up of the databases. This setting is only necessary during the construction
of the databases. Later the original hostname can be restored.
The value of the parameter MAX_SERVERDBS should in addition be set to twice the number of databases taking part in the distribution. E.g. if three databases are taking part, set the parameter to 6 .
It must be taken care that the SYSDBA of every single node has a unique name. Otherwise the corresponding node cannot be included into the distribution of databases !
Distributed databases should not be started using boot scripts. Otherwise problems may occur in certain situations.
xcontrol
allows to reconnect a database in the distribution using the menue item Reconnect
.
Please note that calling Reconnect Copy
while the database is already in the distribution leads to a
Disconnect
!
The menue item Info - Distribution
shows information about the current status of the local database and
also about the status of the whole distribution :
VDB1 on Database1 Info Distribution 15.04.1998 13:39:23 qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq No State Majority Serverdb Servernode qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq 0 Connected YES VDB1 Database1.db.de 1 Connected YES VDB2 Database2.db.de 2 UNDEF NO VDB3 Database3.db.de qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
Keywords: ADABAS D, DATABASE, DISTRIBUTION
Feedback welcome: Send Mail to Lars.Rusdorf@suse.de (Please give the following subject: SDB-adabas_verteilung
)
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