Process Flow Control With Shell Scripts

This article is a critical examination of the use of the UNIX shell (sh, ksh, bash, . . .) in the context of process flow control. The occurring and the problems described within this document are of conceptual nature and also apply to the use of other scripting languages (perl, python, . . .). In no way is it our intention to criticize these languages as a whole. Each of the named languages has its advantages and the author has developed many successful projects with the use of such languages w...
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Parallelization of processes in data warehouses

The processing of large amounts of data is typical for data warehouse environments. Depending on the available hardware resources, sooner or later the point is reached where a job cannot be processed on a single processor resp. cannot be represented by a single process anymore. The reasons for that are: Time requirements demand the use of multiple processors Systems resources (memory, disk space, temporary tablespace, rollback segments, . . .) are limited. Recurrent errors re...
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