打开Oracle trace说明

cd $oracle_home/rdbms/admin
log into sqlplus as sys
run @utlxplan
run create public synonym plan_table for plan_table;
grant all on plan_table to scott;
cd $oracle_home/sqlplus/admin
log into sqlplus as sys
run @plustrce.sql
grant plustrace to scott;

log into sqlplus scott
set autotrace on stat

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