I am trying to link a user defined function in qdb. As mentioned in the documentation of QDB added 

Function = tag@lib.so

[TempMainAddressBook] 
Filename                                             =             /fs/tmpfs/TempMainAddressBook  
Base Schema                                     =             /etc/sql/TempMainAddressBook.sql       
Data Schema                                     =             /etc/sql/TempMainAddressBook.sql       
Backup Dir                                           =             /pas/rwdata/qdbbk 
Compression                                     =             bzip      
Collation = cldr@libqdb_cldr.so
Function = f_instr_chars_tag@/pas/lib/dll/libQDB_User_Defined_Functions.so


but I am getting following error:
"processing [TempMainAddressBook]Function - Can't access shared library"

Am I doing something wrong here.Please correct me.