• VMware vCenter Server 5.x and 6.0 do not function correctly when the Windows Oracle Client versions, 11.2.0.3.10 to 11.2.0.3.18, 12.1.0.1, 12.1.0.1.0, and 12.1.0.1.11 are present on vCenter Server or its database server.
  
  Note: This issue does not occur on Oracle Client 11.2.0.4 and 12.1.0.2
  
  
• Creating a virtual machine fails.
• When creating a new virtual machine on vCenter Server 5.x, you see the error:
  
  An internal error occurred in the vSphere Client.
  Details: Object reference not set to an instance of an object.
  
  
• You cannot edit, power on, nor migrate existing virtual machines.
• Attempting to edit, power on, or migrate existing virtual machines fails.
• Running this query displays the same DBMS_LOB.GETLENGTH(DATA) value across multiple vmx-## for the same HOST_ID:

From an affected database, you see output similar to:

SQL> select host_id, config_option_ver, dbms_lob.getlength(data) from vpx_host_vm_config_option;

AFTER DELETED HOST ADDED BACK:

HOST_ID CONFIG_OPTION_VER DBMS_LOB.GETLENGTH(DATA)

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

38 vmx-03 386901

38 vmx-04 386901

38 vmx-07 386901

38 vmx-08 386901