After when server restarting DB cannot start below show alert log, please help because I`m totaly new in Oracle and can`t understand
alter database open
Beginning crash recovery of 1 threads
Started redo scan
Completed redo scan
63227 redo blocks read, 1128 data blocks need recovery
Started redo application at
Thread 1: logseq 31214, block 195852
Recovery of Online Redo Log: Thread 1 Group 3 Seq 31214 Reading mem 0
Mem# 0: D:\ORACLE\ORADATA\UAIS\REDO03.LOG
Recovery of Online Redo Log: Thread 1 Group 4 Seq 31215 Reading mem 0
Mem# 0: D:\ORACLE\ORADATA\UAIS\REDO04.LOG
Exception [type: ACCESS_VIOLATION, UNABLE_TO_READ] [ADDR:0x7FFFFFFE] [PC:0x7FEFE6311C8, {empty}]
Errors in file f:\oracle\diag\rdbms\uais\uais\trace\uais_ora_15528.trc (incident=401360):
ORA-07445: exception encountered: core dump [PC:0x7FEFE6311C8] [ACCESS_VIOLATION] [ADDR:0x7FFFFFFE] [PC:0x7FEFE6311C8] [UNABLE_TO_READ] []
Incident details in: f:\oracle\diag\rdbms\uais\uais\incident\incdir_401360\uais_ora_15528_i401360.trc
Errors in file f:\oracle\diag\rdbms\uais\uais\incident\incdir_401360\uais_ora_15528_i401360.trc:
ORA-00607: Internal error occurred while making a change to a data block
ORA-00602: internal programming exception
ORA-07445: exception encountered: core dump [PC:0x7FEFE6311C8] [ACCESS_VIOLATION] [ADDR:0x7FFFFFFE] [PC:0x7FEFE6311C8] [UNABLE_TO_READ] []
Process debug not enabled via parameter _debug_enable
Wed Dec 25 16:12:13 2013
Trace dumping is performing id=[cdmp_20131225161213]