Unable to open production database after normal shutdown

Hi,
We are using oracle database 10.2.0.3 on AIX 5.3 with ASM.
I have normally shutdown my database and after that when I am trying to open that i got lots of errors and as a result of that ASM diskgroups got dismounted.
Our asm instance boots normally and mount the diskgroups but while opening database got following error:
SQL> startup
ASM instance started
Total System Global Area 130023424 bytes
Fixed Size 2071104 bytes
Variable Size 102786496 bytes
ASM Cache 25165824 bytes
ASM diskgroups mounted
SQL>
=============================
DATABASE STARTUP
===============================
SQL> startup
ORACLE instance started.
Total System Global Area 2.0451E+10 bytes
Fixed Size 2109304 bytes
Variable Size 1929379976 bytes
Database Buffers 1.8488E+10 bytes
Redo Buffers 31444992 bytes
Database mounted.
ORA-01157: cannot identify/lock data file 1 - see DBWR trace file
ORA-01110: data file 1: '+ORADATA/pakedwp/datafile/system.260.644366937'
ORA-15078: ASM diskgroup was forcibly dismounted
FOllowing is the alert_log entries details:
==================================================
Errors in file /u01/app/oracle/admin/pakedwp/bdump/pakedwp_dbw0_160228.trc:
ORA-01157: cannot identify/lock data file 862 - see DBWR trace file
ORA-01110: data file 862: '+ORADATA/pakedwp/datafile/sor_pre_voice_su_out_dec08w4.2014.672099749'
ORA-17503: ksfdopn:2 Failed to open file
+ORADATA/pakedwp/datafile/sor_pre_voice_su_out_dec08w4.2014.672099749
ORA-15001: diskgroup "ORADATA" does not exist or is not mounted
ORA-15001: diskgroup "ORADATA" does not exist or is not mounted
Thu Jan 29 20:00:10 2009
Errors in file /u01/app/oracle/admin/pakedwp/bdump/pakedwp_dbw0_160228.trc:
ORA-01157: cannot identify/lock data file 863 - see DBWR trace file
ORA-01110: data file 863:
'+ORADATA/pakedwp/datafile/sor_msc_cdr_in_dec08w1.2013.672099785'
ORA-17503: ksfdopn:2 Failed to open file
+ORADATA/pakedwp/datafile/sor_msc_cdr_in_dec08w1.2013.672099785
ORA-15001: diskgroup "ORADATA" does not exist or is not mounted
ORA-15001: diskgroup "ORADATA" does not exist or is not mounted
Thu Jan 29 20:00:10 2009
Errors in file /u01/app/oracle/admin/pakedwp/bdump/pakedwp_dbw0_160228.trc:
ORA-01157: cannot identify/lock data file 864 - see DBWR trace file
ORA-01110: data file 864:
'+ORADATA/pakedwp/datafile/sor_msc_cdr_out_sep08w1.1550.663694183'
ORA-17503: ksfdopn:2 Failed to open file
+ORADATA/pakedwp/datafile/sor_msc_cdr_out_sep08w1.1550.663694183
ORA-15001: diskgroup "ORADATA" does not exist or is not mounted
ORA-15001: diskgroup "ORADATA" does not exist or is not mounted
Thu Jan 29 20:00:10 2009
Errors in file /u01/app/oracle/admin/pakedwp/bdump/pakedwp_dbw0_160228.trc:
ORA-01157: cannot identify/lock data file 865 - see DBWR trace file
ORA-01110: data file 865:
'+ORADATA/pakedwp/datafile/sor_msc_cdr_in_sep08w2.1549.663694199'
ORA-17503: ksfdopn:2 Failed to open file
+ORADATA/pakedwp/datafile/sor_msc_cdr_in_sep08w2.1549.663694199
ORA-15001: diskgroup "ORADATA" does not exist or is not mounted
ORA-15001: diskgroup "ORADATA" does not exist or is not mounted
Thu Jan 29 20:00:10 2009
Errors in file /u01/app/oracle/admin/pakedwp/bdump/pakedwp_dbw0_160228.trc:
ORA-01157: cannot identify/lock data file 866 - see DBWR trace file
ORA-01110: data file 866:
'+ORADATA/pakedwp/datafile/sor_msc_cdr_out_sep08w2.1157.663694209'
ORA-17503: ksfdopn:2 Failed to open file
+ORADATA/pakedwp/datafile/sor_msc_cdr_out_sep08w2.1157.663694209
ORA-15001: diskgroup "ORADATA" does not exist or is not mounted
ORA-15001
==============================================
No Recent changes have been brought down on the storage or system.
After this failure when I try to mount diskgroup it successfuly mounted again. But again when we try to open database it prompt same errors:
Does any one have any solution/suggestions?????????

following are the results of the query:
NAME PATH HEADER_STATU DISK_NUMBER
ORADATA_0064 /dev/rhdisk13 MEMBER 64
ORADATA_0030 /dev/rhdisk40 MEMBER 30
ORADATA_0031 /dev/rhdisk41 MEMBER 31
ORADATA_0062 /dev/rhdisk10 MEMBER 62
ORADATA_0005 /dev/rhdisk11 MEMBER 5
FLASH_RECO_AREA_0002 /dev/rhdisk12 MEMBER 2
ORADATA_0006 /dev/rhdisk33 MEMBER 6
ORADATA_0024 /dev/rhdisk34 MEMBER 24
ORADATA_0028 /dev/rhdisk38 MEMBER 28
ORADATA_0029 /dev/rhdisk39 MEMBER 29
ORADATA_0019 /dev/rhdisk3 MEMBER 19
ORADATA_0023 /dev/rhdisk4 MEMBER 23
ORADATA_0000 /dev/rhdisk27 MEMBER 0
ORADATA_0002 /dev/rhdisk28 MEMBER 2
ORADATA_0018 /dev/rhdisk29 MEMBER 18
ORADATA_0017 /dev/rhdisk26 MEMBER 17
ORADATA_0016 /dev/rhdisk25 MEMBER 16
ORADATA_0015 /dev/rhdisk24 MEMBER 15
ORADATA_0014 /dev/rhdisk23 MEMBER 14
ORADATA_0013 /dev/rhdisk22 MEMBER 13
ORADATA_0012 /dev/rhdisk21 MEMBER 12
ORADATA_0011 /dev/rhdisk20 MEMBER 11
ORADATA_0010 /dev/rhdisk19 MEMBER 10
ORADATA_0008 /dev/rhdisk17 MEMBER 8
ORADATA_0007 /dev/rhdisk16 MEMBER 7
ORADATA_0027 /dev/rhdisk37 MEMBER 27
ORADATA_0032 /dev/rhdisk42 MEMBER 32
ORADATA_0065 /dev/rhdisk15 MEMBER 65
ORADATA_0009 /dev/rhdisk18 MEMBER 9
ORADATA_0026 /dev/rhdisk36 MEMBER 26
ORADATA_0025 /dev/rhdisk35 MEMBER 25
ORADATA_0020 /dev/rhdisk30 MEMBER 20
ORADATA_0021 /dev/rhdisk31 MEMBER 21
ORADATA_0022 /dev/rhdisk32 MEMBER 22
ORADATA_0003 /dev/rhdisk44 MEMBER 3
ORADATA_0001 /dev/rhdisk43 MEMBER 1
ORADATA_0004 /dev/rhdisk45 MEMBER 4
ORADATA_0033 /dev/rhdisk46 MEMBER 33
ORADATA_0034 /dev/rhdisk47 MEMBER 34
ORADATA_0035 /dev/rhdisk48 MEMBER 35
ORADATA_0036 /dev/rhdisk49 MEMBER 36
ORADATA_0037 /dev/rhdisk5 MEMBER 37
ORADATA_0038 /dev/rhdisk50 MEMBER 38
ORADATA_0039 /dev/rhdisk51 MEMBER 39
ORADATA_0040 /dev/rhdisk52 MEMBER 40
ORADATA_0041 /dev/rhdisk53 MEMBER 41
ORADATA_0042 /dev/rhdisk54 MEMBER 42
ORADATA_0043 /dev/rhdisk55 MEMBER 43
ORADATA_0044 /dev/rhdisk56 MEMBER 44
ORADATA_0045 /dev/rhdisk57 MEMBER 45
ORADATA_0046 /dev/rhdisk58 MEMBER 46
ORADATA_0047 /dev/rhdisk59 MEMBER 47
ORADATA_0066 /dev/rhdisk6 MEMBER 66
ORADATA_0048 /dev/rhdisk60 MEMBER 48
ORADATA_0049 /dev/rhdisk61 MEMBER 49
ORADATA_0050 /dev/rhdisk62 MEMBER 50
ORADATA_0053 /dev/rhdisk63 MEMBER 53
ORADATA_0054 /dev/rhdisk64 MEMBER 54
ORADATA_0063 /dev/rhdisk65 MEMBER 63
FLASH_RECO_AREA_0000 /dev/rhdisk66 MEMBER 0
ORADATA_0055 /dev/rhdisk67 MEMBER 55
ORADATA_0056 /dev/rhdisk68 MEMBER 56
ORADATA_0057 /dev/rhdisk69 MEMBER 57
ORADATA_0067 /dev/rhdisk7 MEMBER 67
ORADATA_0078 /dev/rhdisk93 MEMBER 78
ORADATA_0079 /dev/rhdisk94 MEMBER 79
ORADATA_0080 /dev/rhdisk95 MEMBER 80
ORADATA_0081 /dev/rhdisk96 MEMBER 81
ORADATA_0058 /dev/rhdisk70 MEMBER 58
ORADATA_0059 /dev/rhdisk71 MEMBER 59
ORADATA_0060 /dev/rhdisk72 MEMBER 60
ORADATA_0051 /dev/rhdisk8 MEMBER 51
ORADATA_0074 /dev/rhdisk89 MEMBER 74
ORADATA_0075 /dev/rhdisk90 MEMBER 75
ORADATA_0076 /dev/rhdisk91 MEMBER 76
ORADATA_0077 /dev/rhdisk92 MEMBER 77
ORADATA_0070 /dev/rhdisk85 MEMBER 70
ORADATA_0071 /dev/rhdisk86 MEMBER 71
ORADATA_0072 /dev/rhdisk87 MEMBER 72
ORADATA_0073 /dev/rhdisk88 MEMBER 73
ORADATA_0052 /dev/rhdisk9 MEMBER 52
ORADATA_0068 /dev/rhdisk83 MEMBER 68
ORADATA_0061 /dev/rhdisk73 MEMBER 61
ORADATA_0069 /dev/rhdisk84 MEMBER 69
84 rows selected.
SQL>
I have also check the ownership and its correct.
I have also check ASMCMD and tried to located files in the diskgroup and all files are there.
I have also successfully created one test directory in asm diskgroup by mkdir command.

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