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Lookups on same table cause dump (mdmp)?!

Posted By:      Posted Date: September 01, 2010    Points: 0   Category :Sql Server
Hi,I have a pair of lookups components copied accross 3 packages. The first lookup in a package selects 4 columns from a common table and caches it fully. The second one depends from the first and selects data from one column from different tables according to the package being run. The column type is varchar 255. All the packages have different ID and so do the different lookups.The three packages deal with different Data Volume so that package 1 receives some MBs while package 3 receives around 100 MBs, and package 2 gets a dozen MBs or so.If I run all 3 packages in parrallel as requested by the client, the first package reaches the DFT with the lookups but stops before the next steps (a conditional split followed by an insertion or an update in SQL server destination), untill package 2 reaches the same lookups. Both packages then insert/update as expected one bunch of row then stop, untill package 3 finally also reaches the lookups. All packages then work "normally" although they are really slow compared to the speed they reach when they are executed alone.Finally, as package 1 treats smaller data volume, it starts processing another source file once the data from the current file has been processed (package 2 and 3 are still working on the same data). Once it reaches the data flow with the lookups evoked above, it causes the following mdmp dump to be created: Load

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