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What is the difference between parallel hint and DBMS_PARALLEL_EXECUTE on an INSERT or MERGE statement in ORACLE?

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parallel hint

  • does a statement-level parallelism,
  • is coordinated inside the SQL engine,
  • is a single statement within a single transaction - implies no commits

dbms_parallel_execute package

  • does an application-level parallelism,
  • is coordinated in a PL/SQL program,
  • is multiple statements within multiple transactions - implies commits of partially DML'd data.

You better read the Oracle documentation.

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