摘要： AUTO[COMMIT] {OFF|ON|IMM[EDIATE]|n} Autocommit commits after each SQL command or PL/SQL blockAUTOT[RACE] {OFF|ON|TRACE[ONLY]} [EXP[LAIN]] [STAT[ISTICS]] Display a trace report for SELECT, INSERT, UPDATE or DELETE statements EXPLAIN shows the query execution path by performing an EXPLAIN PLAN. STAT 阅读全文