1. Log in to the server as the oracle user.
2. Connect to the Oracle database.
> sqlplus / as sysdba
3. Modify the database parameter.
SQL> alter system set RECYCLEBIN=off scope=spfile;
4. Restart the Oracle database.
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup;
ORACLE instance started.
Total System Global Area 4192272384 bytes
Fixed Size 2259880 bytes
Variable Size 1090520152 bytes
Database Buffers 3087007744 bytes
Redo Buffers 12484608 bytes
Database mounted.
Database opened.