Performance improvement for web services -

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we have webservice, called provide delivery date of product, while purchasing in ecomm website.

we using ibm sterling order management in backend, , oob webservice , oob service.

this webservice (wsdl) taking more time, more 40 seconds, create timeoutexception in other integrated systems (middleware).

so want improve performance of webservice. please me provide way improve performance ? improved if server's spec has been upgraded ? oob service, can't customize it.

first of need figure out performance bottleneck. start put verbose trace on oob webservice. use logs , see if can zero-in on particular component or sql taking consuming majority of time. if it's sql, can tune/baseline oob query/tables using indexes. if have user exits implemented (for oob api), ensure lean , aren't making expensive api calls changeorder api.


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