Shell Programming and Scripting

Hi develope one shell in that i use sql query.
i want to display that query output in .xmlfile
after running the script output file is generated but it doesnt diplays data and throws an error.following is the output of the .xml file

Code:

XMLELEMENT("ALL",XMLAGG(XMLELEMENT("DATABASE_OBJECTS",XMLFOREST(OWNER,OBJECT_TYP
<All><DATABASE_OBJECTS><OWNER>APPS</OWNER><OBJECT_TYPE>FUNCTION</OBJECT_TYPE><
OB

if i use otherathan .xml file (like csv etc) i got the result, but for only .xml file i didnt got the data.
and the query inside script is

Code:

select 
xmlelement("All", 
xmlagg(
XMLELEMENT ("DATABASE_OBJECTS",
XMLFOREST (owner,
object_type,
object_name,
object_user_name,
physical_name
))
)
).getClobVal()
FROM xxhex_custom_objects;

this query is working fine but in shell script only it is not generated any output.
Please help me to solve this issue.