SQL & PL/SQL

I have a following xml in CLOB column of a table. I want to retrieve this column via SQL. I tried the following query but it failed. Can someone help me in this regard Thanks.

XML

<exceptionInformation/>

<retryDetails>

<numberOfRetries>0</numberOfRetries>

<isToDoEntrySuppressed>false</isToDoEntrySuppressed>

</retryDetails>

<initiatedByGis>W1FL</initiatedByGis>

SQL I am Trying

SELECT TRIM(XMLTYPE(bo_data_area).extract('/retryDetails/numberOfRetries/text()').getStringVal()) bo_data_area from  W1_ACTIVITY WHERE act_id = 91047445388697;

Error

ORA-31011: XML parsing failed

ORA-19213: error occurred in XML processing at lines 1

LPX-00245: extra data after end of document

ORA-06512: at "SYS.XMLTYPE", line 272

ORA-06512: at line 1

31011. 00000 -  "XML parsing failed"

*Cause:    XML parser returned an error while trying to parse the document.

*Action:   Check if the document to be parsed is valid.