oracle - What changes are visible to select statements? -


looking @ following transactions on same table:

enter image description here

which changes t1 selects get?

for oracle, default isolation level (read committed)

 t1, first select  -> not see changes t1, second select -> not see changes t2 t1, third select  -> not see changes t3, sees changes t2 (phantom read) t1, forth select  -> sees changes (phantom read)

so committed visible t1.


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