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Status Future consideration
Workspace Db2
Created by Guest
Created on Jun 10, 2021

Alias for REST Services

Db2 REST services, with versioning enabled, sets the first service created via the BIND SERVICE command to be the default service.

at this stage the URL and the REST service are in sync and the URL need not reference the version as DB2 will invoke the default version anyway e.g.

rest service: INVOKE_A_REST_SERVICE (V1 - and this is the default version)

URL: http://domain/services/qual/INVOKE_A_REST_SERVICE


if we need to change the rest service and a new version is created say V2

NOW to be able to invoke this we have to now change the URL to:

URL: http://domain/services/qual/INVOKE_A_REST_SERVICE/V2

if V2 is not used then DB2 will invoke the V1 which is the default.


this means that the URL now needs to be changed wherever it is being used and this could be multiple applications which may be owned by various diff teams etc.


to avoid the application change we either free the old version OR manually update the ISDEFAULT column in DSNSERVICE table (this is not documented and I assume not supported).


another pain point is the version could be a string of characters (site specific e.g. date, ts based etc). these characters are in most cases meaningless to the applications that only want to call a named REST service e.g.

URL: http://domain/services/qual/INVOKE_A_REST_SERVICE/V2 (V2 does not add any value to the URL from the application perspective)

another e.g. here could be:

URL: http://domain/services/qual/INVOKE_A_REST_SERVICE/V2.ABCDEF.TS1



Needed by Date Sep 1, 2021