update query with OR condition in PL/sql - plsql

Question

I have a update query in PL/SQL where I need to use OR condition based on itemsetid='XXXX or orgid ='YYYYY' this is because not all tables have these 2 fields so I need to use OR condition. I tried as below but it's not working ,
set serveroutput on size unlimited ;
declare
type item_type
is record (
maxSameas maxattribute.sameasattribute%TYPE,
maxTable maxattribute.objectname%TYPE,
maxAttrib maxattribute.attributename%TYPE
);
Type attribArray is table of item_type;
allAttribs attribArray;
cursor ITEM_ATTRIB_CURSOR is
select a.sameasattribute, a.objectname, a.attributename
from maxattribute a, maxobject b
where a.persistent = 1
and a.objectname = b.objectname
and b.persistent = 1
and ((a.sameasattribute is not null
and a.sameasattribute like 'ITEMNUM')
or (a.attributename = 'ITEMNUM'))
and a.objectname <> 'ITEMHIST'
-- and a.objectname <> 'ITEM'
and b.isView = '0'
order by a.objectname asc, a.attributename asc, a.sameasattribute desc;
type itemXrefType
is record (
currValue itemhist.ITEMNUM%type,
oldValue itemhist.OLDITEMNUM%type
);
type itemXrefTable is table of itemXrefType;
itemXref itemXrefTable;
cursor ITEM_VAL_CURSOR is
select itemnum, olditemnum
from itemhist
where olditemnum is not null and itemsetid='XXXXX';
updateStr varchar2 (4000);
queryStr varchar2 (4000);
tableName varchar2 (30);
attribName varchar2(50);
rowKount NUMBER;
begin
DBMS_OUTPUT.ENABLE(NULL);
-- Fetch Cross Reference Data
open item_val_cursor;
fetch item_val_cursor bulk collect into itemXref;
close item_val_cursor;
-- Fetch all Objects with ITEMNUM attribute
open ITEM_ATTRIB_CURSOR;
fetch ITEM_ATTRIB_CURSOR bulk collect into allAttribs;
close ITEM_ATTRIB_CURSOR;
-- Loop through every Object
for i in allAttribs.first..allAttribs.last loop
tableName := allAttribs(i).maxTable;
if (tableName = 'ITEM') then
attribName := 'ITEMNUM';
else
attribName := allAttribs(i).maxAttrib;
end if;
for j in itemXref.first .. itemXref.last loop
-- For each Item Num, update all objects
queryStr := 'select count (1) from ' || tableName ||
' where ' || attribName || '=' || '''' || itemXref(j).oldValue || '''';
-- Get Count before update
EXECUTE IMMEDIATE queryStr into RowKount;
updateStr := 'update ' || tableName ||
' set ' || attribName || ' = ' || '''' || itemXref(j).currValue
|| ''' where ' || attribName || '=' || '''' || itemXref(j).oldValue || ''' and (itemsetid = ''' || 'XXXX' || ''' or orgid = ''' || 'YYYYY' || ''' ) ''' '''';
--dbms_output.put_line (itemXref(j).currValue || ' ::::' || itemXref(j).oldValue);
dbms_output.put_line (updateStr || ':: Records to be updated is ' || rowKount);
-- Execute the Update
EXECUTE IMMEDIATE updateStr;
-- Commit changes
updateStr := 'Commit';
EXECUTE IMMEDIATE updateStr;
-- Get count after update - should be none!
EXECUTE IMMEDIATE queryStr into RowKount;
dbms_output.put_line (' Count of records after the update is ' || rowKount);
end loop;
end loop; --for i in allAttribs
end;
Thanks in advance!