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Yes it does support different transaction isolation levels per-connection. You can set the transaction isolation level (as well as the read-only and deferrable status for transactions) for a connection with SET SESSION CHARACTERISTICS: localhost:5432 postgres postgres # SHOW transaction_isolation; transaction_isolation ----------------------- read ...


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Transaction isolation level is set up per transaction basis. Even one connection can have different isolation level on each transaction. Of course different connection can have different isolation level. Here's some testing : postgres=# begin; BEGIN postgres=# show transaction_isolation ; transaction_isolation ----------------------- read committed (1 ...



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