Answer Posted / swetha

Grouping of session is known as batch.Batches are two types

Sequential: Runs sessions one after the other

Concurrent: Runs session at same time.

If you have sessions with source-target dependencies you
have to go for sequential batch to start the sessions one
after another.If you have several independent sessions you
can use concurrent batches Which runs all the sessions at
the same time.

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Hi, I want to change date type char value integer value? I tried alter table tab_name modify (newcolumn newdatetype). But The columns have 10 million values(char type) so I want to load now numeric data. How it is possible? Old Values New Value(I want to load numeric data but the old value should be there in the column) Y 1 N 0 ERROR at line 1: ORA-01439: column to be modified must be empty to change datatype Please help on this. Thanks, GM

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