The identical query, unusable performance in an environment - please help
We strive to improve 10.2.0.4 to 11.2.0.2, but one of our considered requests is completely wrong (30 seconds in our current environment, 4000 in our upgraded environment).Note that the caveat is that it will be very difficult for me to edit the SQL code (his coming of another group of TI, as well as their position is that he should not have to be changed given the fact that it works so well in the current production environment).
The query is exactly the same in both environments and transports the SQL_ID, but explain the plans are different.
The environment in which the application works is version 10.2.0.4 and time the trace is 30,15 seconds, 841 rows returned.
The new environment is 11.2.0.2, the elapsed time is 4035 seconds, 841 rows returned.
The environments are comparable in terms of CPU/memory/IO (the two are written for on our NetApp NFS mounts)
SGA_MAX/TARGET and PGA_AGGREGATE_TARGET are the same in both environments, as well as HASH_AREA_SIZE and SORT_AREA_SIZE.
The table database is identical, and all of the indexes are the same in both environments. His stats were collected and this behavior has persisted through several reboots of the databases.
I ran traces on statements in both environments and the performance difference seems to be due to direct path read/write temp:
The SQL
SELECT DISTINCT
a.emplid,
a.name,
rds.sa_get_stdnt_email_fn (a.emplid),
a.req_term,
a.req_term_ldesc,
CASE
WHEN (a.req_acad_plan = 'PKINXXXBBS' AND a.cum_gpa >= d.gpa)
THEN
NVL (c.num_met, 0) + 1
WHEN (b.gpa >= d.gpa AND a.req_acad_plan <> 'PKINXXXBBS')
THEN
NVL (c.num_met, 0) + 1
ELSE
NVL (c.num_met, 0)
END
AS "Requirement Status",
a.cum_total_passed AS "Cumulative Units",
a.admit_term,
a.admit_term_ldesc,
a.acad_plan,
a.acad_plan_ldesc,
a.academic_level,
a.academic_level_ldesc,
TO_CHAR (a.rpt_date, 'MM/DD/YYYY') AS rpt_date,
TO_CHAR (NVL (b.gpa, 0), '0.000') AS gpa,
TO_CHAR (NVL (a.cum_gpa, 0), '0.000') AS cum_gpa
FROM sa.rec_sm_stdnt_deg_completion a,
( SELECT DISTINCT
CASE
WHEN SUM (b_sub.units_earned) = 0 THEN 0
ELSE SUM (b_sub.grade_points) / SUM (b_sub.units_earned)
END
AS gpa,
b_sub.emplid,
b_sub.acad_career,
b_sub.acad_plan,
b_sub.req_acad_plan,
b_sub.req_term,
b_sub.academic_level,
b_sub.rqrmnt_group
FROM sa.rec_sm_stdnt_deg_completion b_sub,
hrsa_extr.ps_rq_grp_tbl g3,
hrsa_extr.ps_rq_main_tbl m3
WHERE b_sub.req_acad_plan IS NOT NULL
AND b_sub.acad_career = 'UGRD'
AND b_sub.acad_prog = 'UBACH'
AND b_sub.acad_plan = b_sub.req_acad_plan
AND b_sub.grade <> 'IP'
AND b_sub.impact_flag = 'Y'
AND g3.effdt =
(SELECT MAX (g3_ed.effdt)
FROM hrsa_extr.ps_rq_grp_tbl g3_ed
WHERE g3_ed.rqrmnt_group = g3.rqrmnt_group
AND g3_ed.effdt <= b_sub.req_term_begin_date)
AND g3.rqrmnt_group = b_sub.rqrmnt_group
AND m3.effdt =
(SELECT MAX (m3_ed.effdt)
FROM hrsa_extr.ps_rq_main_tbl m3_ed
WHERE m3_ed.requirement = m3.requirement
AND m3_ed.effdt <= b_sub.req_term_begin_date)
AND m3.requirement = b_sub.requirement
GROUP BY b_sub.emplid,
b_sub.acad_career,
b_sub.acad_plan,
b_sub.req_acad_plan,
b_sub.req_term,
b_sub.academic_level,
b_sub.rqrmnt_group) b,
( SELECT c_sub.emplid,
c_sub.acad_career,
c_sub.acad_plan,
c_sub.req_acad_plan,
c_sub.req_term,
c_sub.academic_level,
c_sub.rqrmnt_group,
COUNT (*) AS num_met
FROM sa.rec_sm_stdnt_deg_completion c_sub,
hrsa_extr.ps_rq_grp_tbl g2,
hrsa_extr.ps_rq_main_tbl m2
WHERE c_sub.rqrmnt_line_status = 'COMP'
AND c_sub.grade <> 'IP'
AND c_sub.impact_flag = 'Y'
AND c_sub.acad_career = 'UGRD'
AND c_sub.acad_prog = 'UBACH'
AND c_sub.acad_plan = c_sub.req_acad_plan
AND g2.effdt =
(SELECT MAX (g2_ed.effdt)
FROM hrsa_extr.ps_rq_grp_tbl g2_ed
WHERE g2_ed.rqrmnt_group = g2.rqrmnt_group
AND g2_ed.effdt <= c_sub.req_term_begin_date)
AND g2.rqrmnt_group = c_sub.rqrmnt_group
AND m2.effdt =
(SELECT MAX (m2_ed.effdt)
FROM hrsa_extr.ps_rq_main_tbl m2_ed
WHERE m2_ed.requirement = m2.requirement
AND m2_ed.effdt <= c_sub.req_term_begin_date)
AND m2.requirement = c_sub.requirement
GROUP BY c_sub.emplid,
c_sub.acad_career,
c_sub.acad_plan,
c_sub.req_acad_plan,
c_sub.req_term,
c_sub.academic_level,
c_sub.rqrmnt_group) c,
hrsa_extr.ps_smo_rdr_imp_pln d,
hrsa_extr.ps_rq_grp_tbl g,
hrsa_extr.ps_rq_main_tbl m
WHERE a.acad_career = 'UGRD'
AND a.acad_prog = 'UBACH'
AND a.req_acad_plan IN (N'NUPPXXXBBS', N'NURPBASBBS', N'NURPXXXBBS')
AND a.academic_level IN (N'10', N'20', N'30', N'40', N'50', N'GR')
AND a.acad_plan = a.req_acad_plan
AND a.impact_flag = 'Y'
AND g.effdt =
(SELECT MAX (g_ed.effdt)
FROM hrsa_extr.ps_rq_grp_tbl g_ed
WHERE g_ed.rqrmnt_group = g.rqrmnt_group
AND g_ed.effdt <= a.req_term_begin_date)
AND g.rqrmnt_group = a.rqrmnt_group
AND m.effdt =
(SELECT MAX (m_ed.effdt)
FROM hrsa_extr.ps_rq_main_tbl m_ed
WHERE m_ed.requirement = m.requirement
AND m_ed.effdt <= a.req_term_begin_date)
AND m.requirement = a.requirement
AND a.emplid = b.emplid(+)
AND a.acad_career = b.acad_career(+)
AND a.acad_plan = b.acad_plan(+)
AND a.req_acad_plan = b.req_acad_plan(+)
AND a.academic_level = b.academic_level(+)
AND a.req_term = b.req_term(+)
AND a.rqrmnt_group = b.rqrmnt_group(+)
AND a.emplid = c.emplid(+)
AND a.acad_career = c.acad_career(+)
AND a.acad_plan = c.acad_plan(+)
AND a.req_acad_plan = c.req_acad_plan(+)
AND a.academic_level = c.academic_level(+)
AND a.req_term = c.req_term(+)
AND a.rqrmnt_group = c.rqrmnt_group(+)
AND d.acad_plan = a.req_acad_plan
ORDER BY 6 DESC, 2 ASC;Explain plan
PLAN_TABLE_OUTPUT
-------------------------------------------------------------------------------------------------------------------------
Plan hash value: 4117596694
-------------------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
-------------------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | 314 | 15231 (1)| 00:03:03 |
| 1 | SORT UNIQUE | | 1 | 314 | 15230 (1)| 00:03:03 |
| 2 | NESTED LOOPS OUTER | | 1 | 314 | 15227 (1)| 00:03:03 |
| 3 | NESTED LOOPS OUTER | | 1 | 285 | 15216 (1)| 00:03:03 |
| 4 | NESTED LOOPS | | 1 | 256 | 15205 (1)| 00:03:03 |
| 5 | NESTED LOOPS | | 1 | 241 | 15204 (1)| 00:03:03 |
| 6 | NESTED LOOPS | | 1 | 223 | 15203 (1)| 00:03:03 |
| 7 | NESTED LOOPS | | 17 | 731 | 15186 (1)| 00:03:03 |
| 8 | VIEW | VW_SQ_3 | 998 | 27944 | 15186 (1)| 00:03:03 |
| 9 | HASH GROUP BY | | 998 | 62874 | 15186 (1)| 00:03:03 |
| 10 | MERGE JOIN | | 29060 | 1787K| 15184 (1)| 00:03:03 |
| 11 | SORT JOIN | | 26 | 1248 | 15180 (1)| 00:03:03 |
| 12 | TABLE ACCESS BY INDEX ROWID | REC_SM_STDNT_DEG_COMPLETION | 26 | 1248 | 15179 (1)| 00:03:03 |
|* 13 | INDEX SKIP SCAN | REC0SM_STDNT_DEG_IDX | 26 | | 15168 (1)| 00:03:03 |
|* 14 | SORT JOIN | | 1217 | 18255 | 4 (25)| 00:00:01 |
| 15 | INDEX FAST FULL SCAN | PS3RQ_GRP_TBL | 1217 | 18255 | 3 (0)| 00:00:01 |
|* 16 | INDEX UNIQUE SCAN | PS_RQ_GRP_TBL | 1 | 15 | 0 (0)| 00:00:01 |
|* 17 | TABLE ACCESS BY USER ROWID | REC_SM_STDNT_DEG_COMPLETION | 1 | 180 | 1 (0)| 00:00:01 |
|* 18 | INDEX RANGE SCAN | PS_RQ_MAIN_TBL | 1 | 18 | 1 (0)| 00:00:01 |
| 19 | SORT AGGREGATE | | 1 | 18 | | |
| 20 | FIRST ROW | | 1 | 18 | 2 (0)| 00:00:01 |
|* 21 | INDEX RANGE SCAN (MIN/MAX) | PS_RQ_MAIN_TBL | 1 | 18 | 2 (0)| 00:00:01 |
|* 22 | INDEX FULL SCAN | PS0SMO_RDR_IMP_PLN | 1 | 15 | 1 (0)| 00:00:01 |
|* 23 | VIEW PUSHED PREDICATE | | 1 | 29 | 11 (19)| 00:00:01 |
| 24 | SORT GROUP BY | | 1 | 52 | 11 (19)| 00:00:01 |
| 25 | VIEW | VM_NWVW_5 | 1 | 52 | 10 (10)| 00:00:01 |
|* 26 | FILTER | | | | | |
| 27 | SORT GROUP BY | | 1 | 165 | 10 (10)| 00:00:01 |
|* 28 | FILTER | | | | | |
| 29 | NESTED LOOPS | | 1 | 165 | 7 (0)| 00:00:01 |
| 30 | NESTED LOOPS | | 1 | 147 | 6 (0)| 00:00:01 |
| 31 | NESTED LOOPS | | 1 | 117 | 5 (0)| 00:00:01 |
|* 32 | TABLE ACCESS BY INDEX ROWID | REC_SM_STDNT_DEG_COMPLETION | 1 | 90 | 4 (0)| 00:00:01 |
|* 33 | INDEX RANGE SCAN | REC1SM_STDNT_DEG_IDX | 1 | | 3 (0)| 00:00:01 |
|* 34 | INDEX RANGE SCAN | PS_RQ_GRP_TBL | 1 | 27 | 1 (0)| 00:00:01 |
| 35 | SORT AGGREGATE | | 1 | 15 | | |
| 36 | FIRST ROW | | 1 | 15 | 2 (0)| 00:00:01 |
|* 37 | INDEX RANGE SCAN (MIN/MAX)| PS_RQ_GRP_TBL | 1 | 15 | 2 (0)| 00:00:01 |
|* 38 | INDEX RANGE SCAN | PS_RQ_MAIN_TBL | 1 | 30 | 1 (0)| 00:00:01 |
|* 39 | INDEX RANGE SCAN | PS_RQ_MAIN_TBL | 1 | 18 | 1 (0)| 00:00:01 |
|* 40 | VIEW PUSHED PREDICATE | | 1 | 29 | 11 (19)| 00:00:01 |
| 41 | SORT GROUP BY | | 1 | 32 | 11 (19)| 00:00:01 |
| 42 | VIEW | VM_NWVW_4 | 1 | 32 | 10 (10)| 00:00:01 |
|* 43 | FILTER | | | | | |
| 44 | SORT GROUP BY | | 1 | 166 | 10 (10)| 00:00:01 |
|* 45 | FILTER | | | | | |
|* 46 | FILTER | | | | | |
| 47 | NESTED LOOPS | | 1 | 166 | 7 (0)| 00:00:01 |
| 48 | NESTED LOOPS | | 1 | 148 | 6 (0)| 00:00:01 |
| 49 | NESTED LOOPS | | 1 | 118 | 5 (0)| 00:00:01 |
|* 50 | INDEX RANGE SCAN | PS_RQ_GRP_TBL | 1 | 27 | 2 (0)| 00:00:01 |
|* 51 | TABLE ACCESS BY INDEX ROWID | REC_SM_STDNT_DEG_COMPLETION | 1 | 91 | 3 (0)| 00:00:01 |
|* 52 | INDEX RANGE SCAN | REC1SM_STDNT_DEG_IDX | 1 | | 2 (0)| 00:00:01 |
|* 53 | INDEX RANGE SCAN | PS_RQ_MAIN_TBL | 1 | 30 | 1 (0)| 00:00:01 |
|* 54 | INDEX RANGE SCAN | PS_RQ_MAIN_TBL | 1 | 18 | 1 (0)| 00:00:01 |
| 55 | SORT AGGREGATE | | 1 | 15 | | |
| 56 | FIRST ROW | | 1 | 15 | 2 (0)| 00:00:01 |
|* 57 | INDEX RANGE SCAN (MIN/MAX) | PS_RQ_GRP_TBL | 1 | 15 | 2 (0)| 00:00:01 |
-------------------------------------------------------------------------------------------------------------------------call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 6.59 6.66 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 2 1521.36 4028.91 2256624 240053408 0 841
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 4 1527.95 4035.57 2256624 240053408 0 841Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 2 0.00 0.00
Disk file operations I/O 3 0.07 0.11
db file sequential read 10829 0.12 16.62
direct path write temp 72445 0.30 293.71
direct path read temp 72445 0.58 2234.14
asynch descriptor resize 22 0.00 0.00
SQL*Net more data to client 9 0.00 0.00
SQL*Net message from client 2 0.84 1.25
********************************************************************************PLAN_TABLE_OUTPUT
-------------------------------------------------------------------------------------------------------------------------
Plan hash value: 2178773127
------------------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
------------------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | 331 | 89446 (2)| 00:17:54 |
| 1 | SORT UNIQUE | | 1 | 331 | 89445 (2)| 00:17:54 |
| 2 | NESTED LOOPS | | 1 | 331 | 89440 (2)| 00:17:54 |
| 3 | NESTED LOOPS | | 1 | 316 | 89439 (2)| 00:17:54 |
|* 4 | HASH JOIN OUTER | | 1 | 298 | 89438 (2)| 00:17:54 |
|* 5 | HASH JOIN OUTER | | 1 | 240 | 59625 (2)| 00:11:56 |
| 6 | NESTED LOOPS | | 1 | 182 | 29815 (2)| 00:05:58 |
|* 7 | TABLE ACCESS FULL | REC_SM_STDNT_DEG_COMPLETION | 1 | 167 | 29814 (2)| 00:05:58 |
|* 8 | INDEX FULL SCAN | PS0SMO_RDR_IMP_PLN | 1 | 15 | 1 (0)| 00:00:01 |
| 9 | VIEW | | 1 | 58 | 29809 (2)| 00:05:58 |
| 10 | HASH GROUP BY | | 1 | 71 | 29809 (2)| 00:05:58 |
| 11 | VIEW | | 1 | 71 | 29809 (2)| 00:05:58 |
|* 12 | FILTER | | | | | |
| 13 | HASH GROUP BY | | 1 | 198 | 29809 (2)| 00:05:58 |
| 14 | NESTED LOOPS | | 1 | 198 | 29806 (2)| 00:05:58 |
|* 15 | HASH JOIN | | 1 | 171 | 29805 (2)| 00:05:58 |
|* 16 | HASH JOIN | | 4 | 572 | 29802 (2)| 00:05:58 |
|* 17 | TABLE ACCESS FULL | REC_SM_STDNT_DEG_COMPLETION | 4 | 452 | 29798 (2)| 00:05:58 |
| 18 | INDEX FAST FULL SCAN | PS2RQ_MAIN_TBL | 1035 | 31050 | 3 (0)| 00:00:01 |
| 19 | INDEX FAST FULL SCAN | PS2RQ_MAIN_TBL | 1035 | 28980 | 3 (0)| 00:00:01 |
|* 20 | INDEX RANGE SCAN | PS_RQ_GRP_TBL | 1 | 27 | 1 (0)| 00:00:01 |
| 21 | SORT AGGREGATE | | 1 | 15 | | |
| 22 | FIRST ROW | | 1 | 15 | 2 (0)| 00:00:01 |
|* 23 | INDEX RANGE SCAN (MIN/MAX)| PS_RQ_GRP_TBL | 1 | 15 | 2 (0)| 00:00:01 |
| 24 | VIEW | | 1 | 58 | 29813 (2)| 00:05:58 |
| 25 | HASH GROUP BY | | 1 | 45 | 29813 (2)| 00:05:58 |
| 26 | VIEW | | 1 | 45 | 29813 (2)| 00:05:58 |
|* 27 | FILTER | | | | | |
| 28 | HASH GROUP BY | | 1 | 199 | 29813 (2)| 00:05:58 |
| 29 | NESTED LOOPS | | 1 | 199 | 29810 (2)| 00:05:58 |
|* 30 | HASH JOIN | | 1 | 172 | 29809 (2)| 00:05:58 |
|* 31 | HASH JOIN | | 8 | 1152 | 29805 (2)| 00:05:58 |
|* 32 | TABLE ACCESS FULL | REC_SM_STDNT_DEG_COMPLETION | 7 | 798 | 29802 (2)| 00:05:58 |
| 33 | INDEX FAST FULL SCAN | PS2RQ_MAIN_TBL | 1035 | 31050 | 3 (0)| 00:00:01 |
| 34 | INDEX FAST FULL SCAN | PS2RQ_MAIN_TBL | 1035 | 28980 | 3 (0)| 00:00:01 |
|* 35 | INDEX RANGE SCAN | PS_RQ_GRP_TBL | 1 | 27 | 1 (0)| 00:00:01 |
| 36 | SORT AGGREGATE | | 1 | 15 | | |
| 37 | FIRST ROW | | 1 | 15 | 2 (0)| 00:00:01 |
|* 38 | INDEX RANGE SCAN (MIN/MAX) | PS_RQ_GRP_TBL | 1 | 15 | 2 (0)| 00:00:01 |
|* 39 | INDEX RANGE SCAN | PS_RQ_MAIN_TBL | 1 | 18 | 1 (0)| 00:00:01 |
| 40 | SORT AGGREGATE | | 1 | 18 | | |
| 41 | FIRST ROW | | 1 | 18 | 2 (0)| 00:00:01 |
|* 42 | INDEX RANGE SCAN (MIN/MAX) | PS_RQ_MAIN_TBL | 1 | 18 | 2 (0)| 00:00:01 |
|* 43 | INDEX RANGE SCAN | PS_RQ_GRP_TBL | 1 | 15 | 1 (0)| 00:00:01 |
| 44 | SORT AGGREGATE | | 1 | 15 | | |
| 45 | FIRST ROW | | 1 | 15 | 2 (0)| 00:00:01 |
|* 46 | INDEX RANGE SCAN (MIN/MAX) | PS_RQ_GRP_TBL | 1 | 15 | 2 (0)| 00:00:01 |
------------------------------------------------------------------------------------------------------------------------call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 1.49 1.51 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 2 18.25 28.63 463672 932215 0 836
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 4 19.75 30.15 463672 932215 0 836Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 2 0.00 0.00
db file scattered read 14262 0.31 13.13
latch: shared pool 1 0.01 0.01
db file sequential read 7 0.00 0.00
direct path write temp 493 0.00 0.00
direct path read temp 493 0.00 0.00
SQL*Net more data to client 40 0.00 0.00
SQL*Net message from client 2 0.83 1.23
********************************************************************************Published by: ngilbert on June 26, 2012 16:41
Hello
as is almost always the case, your bad plan is the result of messed up the cardinality estimates. The biggest problem seems to be the cardinality in steps 12 and 13 of the bad plan:
| 12 | TABLE ACCESS BY INDEX ROWID | REC_SM_STDNT_DEG_COMPLETION | 26 | 1248 | 15179 (1)| 00:03:03 |
|* 13 | INDEX SKIP SCAN | REC0SM_STDNT_DEG_IDX | 26 | | 15168 (1)| 00:03:03 |
that is the estimated cardinality is 26. But if we look at the map, we see that the actual number of lines is 4 orders of magnitude (!) higher than that. So of course this goes wrong from there: the optimizer uses weird join methods, wrong join order etc.
And if we look at the predicate:
13 - access("A"."ACAD_CAREER"='UGRD' AND "A"."ACAD_PROG"='UBACH' AND "A"."IMPACT_FLAG"='Y')
filter("A"."ACAD_PLAN"="A"."REQ_ACAD_PLAN" AND "A"."ACAD_PROG"='UBACH' AND "A"."IMPACT_FLAG"='Y' AND
"A"."ACAD_CAREER"='UGRD')
We can assume that the problem is related to the related predicates: you select lines of tables with 4 equality predicates, but 260 k lines survive this filtering. The optimizer thinks that it is closer to 26, not 260 k, but it's probably because the predicates are not really independent.
There is another thing that seems suspicious: filter predicate is redundant with the predicates of access. There is another discussion on OTN not so long ago, and it turned out to be a symptom of a bug (which makes it even more suspect, is that it was also a SKIP SCAN). See:
Re: CBO does not consider cheaper NL-Plan without guidance
Hope that was helpful.
Best regards
Nikolai
Tags: Database
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/
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On my user account on my labtop when I click on a program, such as mozilla firefox, it happens 'windows cannot access the specified device, path or file. May not be the appropriate permissions for access you point. "This message appears for firefox, AVG, Windows live messenger, windows MediaPlayer etc.
I can access my documents, Panel etc. and everything is there, but it won't let me not get access to the programs.
Also when I go to click on itunes and open office it happens "this file has no program associated with it for performing this action. Create an association in the set associations Control Panel.
Given that I was able to access control panel, I was able to create a new user and use it for now to send this message and all programs have worked on it and I was able to check for the presence of viruses on the Avg on this and everything was clear.
Could you please explain whats wrong and tell me how to fix this please: D thanks
Hello
1. don't you make changes before the show?
2. is the computer is joined to the domain controller?
You can not start any application on a client computer that is joined to the domain controller. When you try to start this type of application, you receive an error message similar to the following:
"Windows cannot access the specified device, path or file. You can not have the appropriate permissions to access the item.This can also occur if the user account is damaged. If the computer is not connected to a domain controller, try the following steps.
1. connect to another user account and create a new user account to fix the damaged user account.
For more information about creating a new user account and the fixing corrupt user account, visit this link: http://windows.microsoft.com/en-US/windows-vista/Fix-a-corrupted-user-profile
Previous post the results in more detail, so that we can help you further.
I hope this helps.
Kind regards
Syed
Answers from Microsoft supports the engineer. -
The summary says it all. {I searched through my extensions in my personal profile through my computer Windows XP and firefox everything but I couldn't find the files C:\Users\username\AppData\Roaming\Mozilla\Extensions\{ec8030f7-c20a-464f-9b0e-13a3a9e97384} and all other files that people have said to get rid of. How has this in (although caterpillars gen is not enabled) was media and I already uninstalled it and all that it came with. Please help because it still makes its appearance.
Sorry, there are no registry GUID where the name of an extension can be used to determine the GUID of this extension uses.
If you did reset Firefox this extension should be gone - period; unless the program that installed the first place is still on your PC and installed this extension all over again.
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