RE: Bind values missing from SQL trace
- From: "Dunbar, Norman" <norman.dunbar@xxxxxxxxxxxxxxxxxxxxxxxxx>
- To: "Rich Jesse" <rjoralist@xxxxxxxxxxxxxxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 16 Aug 2007 10:06:49 +0100
Rich,
I just did a quick test on 9204 where I got the following :
PARSING IN CURSOR #1 len=51 dep=0 uid=23 oct=3 lid=23
tim=1159428269085500 hv=3817972469 ad='5417974c'
select * from norman where n = :nfred and v = :fred
END OF STMT
PARSE
#1:c=1000,e=813,p=0,cr=0,cu=0,mis=1,r=0,dep=0,og=0,tim=1159428269085479
BINDS #1:
bind 0: dty=1 mxl=2000(200) mal=00 scl=00 pre=00 oacflg=03 oacfl2=10
size=2000 offset=0
bfp=40638764 bln=2000 avl=16 flg=05
value=""
bind 1: dty=1 mxl=128(100) mal=00 scl=00 pre=00 oacflg=03 oacfl2=0
size=128 offset=0
bfp=4063ca70 bln=128 avl=07 flg=05
value="varchar"
EXEC
#1:c=0,e=221,p=0,cr=0,cu=0,mis=0,r=0,dep=0,og=4,tim=1159428269111075
WAIT #1: nam='SQL*Net message to client' ela= 6 p1=1650815232 p2=1 p3=0
FETCH
#1:c=0,e=122,p=0,cr=3,cu=0,mis=0,r=0,dep=0,og=4,tim=1159428269111297
*** 2007-08-16 09:56:03.320
WAIT #1: nam='SQL*Net message from client' ela= 15381631 p1=1650815232
p2=1 p3=0
STAT #1 id=1 cnt=0 pid=0 pos=1 obj=17766 op='TABLE ACCESS FULL NORMAN
(cr=3 r=0 w=0 time=112 us)'
In the above, and for every test carried out, The N type bind variables
are never displayed. The table is simple :
Interestingly, the trace shows both binds as having the same data type
(dty=1) but with different max lengths (mxl=2000(200) for the NVVARCHAR2
and mxl=128(100) for the VARCHAR2. The AVL for the NVARCHAR is 16 bytes
long, when the data was actually 8 bytes for the VARCHAR2 it is 7 bytes
- which is as supplied.
So, it looks remarkably like your 'problem' is simply that N data type
binds don't get listed to trace files.
My testing went as follows :
create table norman (n nvarchar2(100), v varchar2(100));
var nfred nvarchar2(1000)
var fred varchar2(100)
exec :nfred := n'nvarchar'
exec :fred := 'varchar'
select * from norman where n = :nfred and v = :fred;
HTH
Cheers,
Norm.
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