V$SQL.OPTIMIZER_ENV_HASH_VALUE DBA_HIST_SQLSTAT.OPTIMIZER_ENV_HASH_VALUE V$SQL.OPTIMIZER_ENV DBA_HIST_OPTIMIZER_ENV.OPTIMIZER_ENV DBMS_SQLDIAG.DUMP_TRACE DBMS_SQLTUNE.SQLSET_ROW DBMS_SQLTUNE_INTERNAL 参考 Optimizer Environment | Oracle Scr…