This truly sound like a sql problem. Make sure that the sql that is generated by ibatis is what you run in your analyzer.

On a side note make sure that all logging is turned off for your application. This is a huge performance hit if it is turned on for any part of your app.

Nathan

On May 23, 2005, at 10:53 AM, Barnett, Brian W. wrote:

Yes, I did notice that subsequent times the exact same query performed
better. The problem is that in our app, a teacher is presented with a list of students in her class. She wants to run a report on each one. Clicking on
a student executes the query below but with a different student id.

It takes over a minute each time she selects a new student. Is this because
the query is not identical each time? It really does me no good that
subsequent times the query runs better, because the teacher doesn't need to
run the same student more than once.

Suggestions?

-----Original Message-----
From: Nathan Maves [mailto:[EMAIL PROTECTED]
Sent: Monday, May 23, 2005 10:59 AM
To: ibatis-user-java@incubator.apache.org
Subject: Re: Query performs differently in SQL Query Analyzer


I think this needs a FAQ :)

This has been cover quite a few times.

iBatis is doing way more then just running sql.  Make sure that to
truly test the performance of iBatis that you run the query multiple
times.  The initial run is creating many object and sets everything
up.  Check the speed of the second and third runs to see more
accurate results.

Nathan

On May 23, 2005, at 10:13 AM, Barnett, Brian W. wrote:


I have a query that returns in 3 or 4 seconds when I run it in
Microsoft SQL
Query Analyzer but takes over a minute to return when run through
iBATIS.
Can anyone give me some clues as to what I should check?

Here is the SQL Map stuff:

    <resultMap id="student_profile_combined_result"
class="java.util.HashMap">
        <result property="abbrev" column="abbrev"
nullValue="null_string"/>
        <result property="session" column="session_name"
nullValue="null_string"/>
        <result property="display" column="display"
nullValue="null_string"/>
        <result property="dateTested" column="dateTested"
nullValue="null_string"/>
<result property="proficiencyLevel" column="proficiency_level"
nullValue="null_string"/>
        <result property="theTestScore" column="the_test_score"
nullValue="-999"/>
        <result property="schoolScoreAvg" column="schoolScoreAvg"
nullValue="-999"/>
        <result property="distScoreAvg" column="distScoreAvg"
nullValue="-999"/>
        <result property="gradeLevelId" column="grade_level_id"
nullValue="-999"/>
        <result property="schoolName" column="school_name"
nullValue="null_string"/>
        <result property="assessmentId" column="assessment_id"
nullValue="-999"/>
        <result property="schoolRawAvg" column="schoolRawAvg"
nullValue="-999"/>
        <result property="distRawAvg" column="distRawAvg"
nullValue="-999"/>
        <result property="lowcut" column="lowcut" nullValue="-999"/>
<result property="highcut" column="highcut" nullValue="-999"/>
        <result property="prof" column="prof" nullValue="-999"/>
        <result property="ppId" column="pp_id" nullValue="-999"/>
        <result property="theRawPoints" column="the_raw_points"
nullValue="-999"/>
        <result property="scoreMethodId" column="score_method_id"
nullValue="-999"/>
        <result property="aboveStandard" column="above_standard"
nullValue="-999"/>
        <result property="schoolAboveStandard"
column="school_above_standard" nullValue="-999"/>
        <result property="districtAboveStandard"
column="district_above_standard" nullValue="-999"/>
        <result property="sessionId" column="session_id"
nullValue="-999"/>
        <result property="maxScore" column="maxScore"
nullValue="-999"/>
        <result property="minScore" column="minScore"
nullValue="-999"/>
    </resultMap>

    <select id="getStudentProfileDataCombined"
resultMap="student_profile_combined_result"
parameterClass="java.util.HashMap">
        $sql$
    </select>

Here is the query:

SELECT a.abbrev, tsts.session_name, tsts.session_id, y.display,
ts.dateTested, ppl.proficiency_level, ts.test_score AS the_test_score,
avs.schoolScoreAvg, avd.distScoreAvg, gr.grade_level_id,
sc.school_name,
a.assessment_id, avs.schoolRawAvg, avs.school_above_standard,
 avd.distRawAvg, avd.district_above_standard, pp.lowcut, pp.highcut,
pp.prof, pp.pp_id, ts.test_raw_points AS the_raw_points,
a.score_method_id,
 ppl.above_standard, avd.maxScore, avd.minScore
FROM assessment a, test_score ts, school sc, grade_level gr,
d_avg_test_score avd, s_avg_test_score avs,
proficiency_profile_levels ppl,
 view_pp pp, test_session tsts, test t, school_year y
WHERE a.assessment_id = ts.assessment_id and ts.sch_student_id =
13120 AND
t.session_id = tsts.session_id AND y.year_id = t.year_id AND
 a.assessment_id = t.assessment_id  AND ts.test_id = t.test_id   AND
avs.assessment_id = ts.assessment_id AND avs.school_id =
ts.school_id  AND
 avs.test_id = ts.test_id AND avs.session_id = t.session_id AND
avs.year_id
= t.year_id  AND avs.grade_level_id = ts.grade_level_id AND
 avd.assessment_id = ts.assessment_id  AND avd.district_id =
ts.district_id
AND avd.grade_level_id = ts.grade_level_id  AND
 avd.test_id = ts.test_id AND avd.session_id = t.session_id AND
avd.year_id
= t.year_id  AND sc.school_id = ts.school_id AND
 gr.grade_level_id = ts.grade_level_id  AND
ppl.proficiency_profile_level_id
= pp.ppl_id  AND pp.a_id = a.assessment_id  AND
 pp.pp_id = a.primary_prof_profile_id  AND ts.grade_level_id =
pp.gl_id AND
pp.rce_id IS NULL  AND t.session_id = pp.s_id  AND
 ts.test_score BETWEEN pp.lowcut AND pp.highcut
ORDER BY ts.dateTested DESC

TIA,
Brian Barnett

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