ORA-01624: log 1 needed for crash recovery of instance xe

SQL> alter system switch logfile;



System altered.



SQL> select * from v$Log;



    GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS           FIRST_CHANGE# FIRST_TIME

---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- -------------------

         1          1         12 2147483648          1 NO  ACTIVE                  203704 2009-09-17 19:04:23

         2          1         11   52428800          1 NO  ACTIVE                  203206 2009-09-17 18:56:08

         3          1         13 2147483648          1 NO  CURRENT                 203710 2009-09-17 19:04:38

SQL>alter system checkpoint;



System altered.



SQL> select * from v$Log;



    GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS           FIRST_CHANGE# FIRST_TIME

---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- -------------------

         1          1         12 2147483648          1 NO  INACTIVE                203704 2009-09-17 19:04:23

         2          1         11   52428800          1 NO  INACTIVE                203206 2009-09-17 18:56:08

         3          1         13 2147483648          1 NO  CURRENT                 203710 2009-09-17 19:04:38



SQL> alter database drop logfile group 2;



Database altered.