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If we use only lookup transformation in a mapping ie,
SourceQualifier-->Lookup --> Target. , here datas are taking
very long time to load in target., so what are steps to
improve the performance in that mapping???????
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Answer Posted / hari
use order by clause in source qualifier.
Remove un necessary ports in that lookup.
try to restrict lookup cache based on the source data.
create order by clause in lookup override using the lookup
condition columns.
If lookup and source are in same database try to join in
source qualifier.
Drop the indiex on the target table before loading the data.
Check index on source table,
Check source table look tables are analysed properly or not.
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