vgdisplay and vgs command dosen't list volume group

Issue

1) volume group "oraclevg" with 3 lv's & able to cd & touch but the vgs / vgdisplay doesnt recognize the volume group

2) https://access.redhat.com/site/solutions/40316 - i tried to clear the lvm cache & rebuild it but still its the same issue.

3) we had another system in similar situation & after a reboot the whole volume group was lost with data

# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/cciss/c0d0p3     1.5G  320M  1.1G  24% /
/dev/mapper/glbcore-lhome
                      3.9G  2.1G  1.7G  55% /home
/dev/mapper/glbcore-lusr
                      4.8G  1.6G  2.9G  36% /usr
/dev/mapper/glbcore-ltmp
                      9.7G  161M  9.1G   2% /tmp
/dev/mapper/glbcore-lopt
                      3.9G  1.9G  1.9G  51% /opt
/dev/mapper/glbcore-ltidalagent
                      4.9G  144M  4.5G   4% /opt/TIDAL/Agent
/dev/mapper/glbcore-lvar
                      9.7G  1.6G  7.6G  18% /var
/dev/mapper/glbcore-lcrash
                      2.0G  194M  1.7G  11% /var/crash
/dev/cciss/c0d0p1     487M   22M  440M   5% /boot
tmpfs                  12G  310M   12G   3% /dev/shm
/dev/mapper/glbcore-lmedia
                      9.9G  1.9G  7.6G  20% /media
/dev/mapper/oraclevg-lappl
                      5.0G  139M  4.6G   3% /appl
/dev/mapper/oraclevg-lovdata
                       20G  350M   19G   2% /ovdata
/dev/mapper/glbcore-lloracle
                       20G  6.7G   12G  36% /local/oracle
/dev/mapper/oraclevg-lu01
                       20G   14G  4.8G  75% /u01


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

# vgs
  VG       #PV #LV #SN Attr   VSize   VFree
  glbcore    1  10   0 wz--n- 134.72G 60.84G
  secondvg   1   0   0 wz--n-   4.00M  4.00M
----------------------------------------------
# vgdisplay
  --- Volume group ---
  VG Name               secondvg
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  1
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                0
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               4.00 MB
  PE Size               4.00 MB
  Total PE              1
  Alloc PE / Size       0 / 0
  Free  PE / Size       1 / 4.00 MB
  VG UUID               RhTly5-X4Ne-bWep-4ASn-My2M-1tSX-msM0FI

  --- Volume group ---
  VG Name               glbcore
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  11
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                10
  Open LV               10
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               134.72 GB
  PE Size               32.00 MB
  Total PE              4311
  Alloc PE / Size       2364 / 73.88 GB
  Free  PE / Size       1947 / 60.84 GB
  VG UUID               xO0vDs-cjjK-QzNr-aEdP-8jzd-3FcC-Ieen5g

#

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

# cd /ovdata
# pwd
/ovdata
# touch test
# ll
total 264
drwxr-xr-x 2 root root 69632 Sep 20 18:24 connection-status
drwxr-xr-x 2 root root  4096 Nov 11 23:45 history
drwx------ 2 root root 16384 May 10  2013 lost+found
drwxr-xr-x 9 root root  4096 Nov 11 23:00 opc_backup
drwxr-xr-x 2 root root 69632 Sep 29 08:40 ovoagt-stat
drwxr-xr-x 2 root root 69632 Sep 20 20:54 ovxgenmsg
-rw-r--r-- 1 root root     0 Nov 12 19:24 test
#
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