Disc is 11% fragmented optimizer ran still 11% fragmented
Disk defrag doesn't seem to work. I used the command line sfc/scannow corrupted files have been detected and repaired. I used the disk check, and nothing was found. I tried disk defrag and it always generates 11% fragmented. I read somewhere that the defragmentation will not work if there are disk errors. Command prompt work better to correct disk errors, and what would be the appropriate command. Thanks for any help on this.
Disk defrag doesn't seem to work. I used the command line sfc/scannow corrupted files have been detected and repaired. I used the disk check, and nothing was found. I tried disk defrag and it always generates 11% fragmented. I read somewhere that the defragmentation will not work if there are disk errors. Command prompt work better to correct disk errors, and what would be the appropriate command. Thanks for any help on this.
Defragment a disk doesn't mean it CAN be defragmented. ;-)
Not all files and other can be defragmented.
In any case... Try these freeware defragmenters to see if they do a better job:
Defraggler
MyDefrag
Their free... Sometimes (often) they work better than the built-in methods.
I doubt that it is a case of disk errors.
Tags: Windows
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I need your help!
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Copy the contents of your drive to a desktop directory. install from this directory.
If this fails, download the installation files:
Available downloadable Setup files:
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Download and installation help links Adobe
Help download and installation to Prodesigntools links can be found on the most linked pages. They are essential; especially steps 1, 2 and 3. If you click on a link that does not have these listed steps, open a second window by using the link to Lightroom 3 to see these "important Instructions".
window using the Lightroom 3 link to see these "important Instructions".
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============================================
Just a thought... There is a possibility that the burner has a bad laser...
Maybe it's time for a new drive.FWIW... There is a way to eject the disc without rebooting:
Laptop DVD tray will not eject - how to open a CD or a DVD player
http://www.fonerbooks.com/laptop12.htm
(should work for laptop or desktop)Volunteer - MS - MVP - Digital Media Experience J - Notice_This is not tech support_I'm volunteer - Solutions that work for me may not work for you - * proceed at your own risk *.
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Blog of database Performance
DETAILS
I've reproduced the entire scenario via SQL scripts to create and populate the tables against which I can then run the queries. I've deliberately padded table so that the length of the average line of data generated is similar to that of the actual data. In this way the statistics should be similar on the number of blocks and so forth.
System - uname - a
Database - v$ versionLinux mysystem.localdomain 2.6.32-300.25.1.el5uek #1 SMP Tue May 15 19:55:52 EDT 2012 i686 i686 i386 GNU/Linux
Original query (complete table below details):Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - Prod PL/SQL Release 10.2.0.5.0 - Production CORE 10.2.0.5.0 Production TNS for Linux: Version 10.2.0.5.0 - Production NLSRTL Version 10.2.0.5.0 - Production
Execution of display_cursor after the execution plan:SELECT episode.episode_id , episode.cross_ref_id , episode.date_required , product.number_required , request.site_id FROM episode LEFT JOIN REQUEST on episode.cross_ref_id = request.cross_ref_id JOIN product ON episode.episode_id = product.episode_id LEFT JOIN product_sub_type ON product.prod_sub_type_id = product_sub_type.prod_sub_type_id WHERE ( episode.department_id = 2 and product.status = 'I' ) ORDER BY episode.date_required ;
Updated the Query:SQL_ID 5ckbvabcmqzw7, child number 0 ------------------------------------- SELECT episode.episode_id , episode.cross_ref_id , episode.date_required , product.number_required , request.site_id FROM episode LEFT JOIN REQUEST on episode.cross_ref_id = request.cross_ref_id JOIN product ON episode.episode_id = product.episode_id LEFT JOIN product_sub_type ON product.prod_sub_type_id = product_sub_type.prod_sub_type_id WHERE ( episode.department_id = 2 and product.status = 'I' ) ORDER BY episode.date_required Plan hash value: 3976293091 ----------------------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time | ----------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | | | | 35357 (100)| | | 1 | SORT ORDER BY | | 33333 | 1920K| 2232K| 35357 (1)| 00:07:05 | | 2 | NESTED LOOPS OUTER | | 33333 | 1920K| | 34879 (1)| 00:06:59 | |* 3 | HASH JOIN OUTER | | 33333 | 1822K| 1728K| 34878 (1)| 00:06:59 | |* 4 | HASH JOIN | | 33333 | 1334K| | 894 (1)| 00:00:11 | |* 5 | TABLE ACCESS FULL| PRODUCT | 33333 | 423K| | 103 (1)| 00:00:02 | |* 6 | TABLE ACCESS FULL| EPISODE | 299K| 8198K| | 788 (1)| 00:00:10 | | 7 | TABLE ACCESS FULL | REQUEST | 3989K| 57M| | 28772 (1)| 00:05:46 | |* 8 | INDEX UNIQUE SCAN | PK_PRODUCT_SUB_TYPE | 1 | 3 | | 0 (0)| | ----------------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 3 - access("EPISODE"."CROSS_REF_ID"="REQUEST"."CROSS_REF_ID") 4 - access("EPISODE"."EPISODE_ID"="PRODUCT"."EPISODE_ID") 5 - filter("PRODUCT"."STATUS"='I') 6 - filter("EPISODE"."DEPARTMENT_ID"=2) 8 - access("PRODUCT"."PROD_SUB_TYPE_ID"="PRODUCT_SUB_TYPE"."PROD_SUB_TYPE_ID")
Execution of display_cursor after the execution plan:SELECT episode.episode_id , episode.cross_ref_id , episode.date_required , product.number_required , request.site_id FROM episode LEFT JOIN REQUEST on episode.cross_ref_id = request.cross_ref_id JOIN product ON episode.episode_id = product.episode_id WHERE ( episode.department_id = 2 and product.status = 'I' ) ORDER BY episode.date_required ;
Creating the table and Population:SQL_ID gbs74rgupupxz, child number 0 ------------------------------------- SELECT episode.episode_id , episode.cross_ref_id , episode.date_required , product.number_required , request.site_id FROM episode LEFT JOIN REQUEST on episode.cross_ref_id = request.cross_ref_id JOIN product ON episode.episode_id = product.episode_id WHERE ( episode.department_id = 2 and product.status = 'I' ) ORDER BY episode.date_required Plan hash value: 4250628916 ---------------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time | ---------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | | | | 10515 (100)| | | 1 | SORT ORDER BY | | 33333 | 1725K| 2112K| 10515 (1)| 00:02:07 | |* 2 | HASH JOIN OUTER | | 33333 | 1725K| 1632K| 10077 (1)| 00:02:01 | |* 3 | HASH JOIN | | 33333 | 1236K| | 894 (1)| 00:00:11 | |* 4 | TABLE ACCESS FULL | PRODUCT | 33333 | 325K| | 103 (1)| 00:00:02 | |* 5 | TABLE ACCESS FULL | EPISODE | 299K| 8198K| | 788 (1)| 00:00:10 | | 6 | INDEX FAST FULL SCAN| IX4_REQUEST | 3989K| 57M| | 3976 (1)| 00:00:48 | ---------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 2 - access("EPISODE"."CROSS_REF_ID"="REQUEST"."CROSS_REF_ID") 3 - access("EPISODE"."EPISODE_ID"="PRODUCT"."EPISODE_ID") 4 - filter("PRODUCT"."STATUS"='I') 5 - filter("EPISODE"."DEPARTMENT_ID"=2)
1 create tables
2. load data
3 create indexes
4. collection of statistics
10053 sections - original query-- -- Main table -- create table episode ( episode_id number (*,0), department_id number (*,0), date_required date, cross_ref_id varchar2 (11), padding varchar2 (80), constraint pk_episode primary key (episode_id) ) ; -- -- Product tables -- create table product_type ( prod_type_id number (*,0), code varchar2 (10), binary_field number (*,0), padding varchar2 (80), constraint pk_product_type primary key (prod_type_id) ) ; -- create table product_sub_type ( prod_sub_type_id number (*,0), sub_type_name varchar2 (20), units varchar2 (20), padding varchar2 (80), constraint pk_product_sub_type primary key (prod_sub_type_id) ) ; -- create table product ( product_id number (*,0), prod_type_id number (*,0), prod_sub_type_id number (*,0), episode_id number (*,0), status varchar2 (1), number_required number (*,0), padding varchar2 (80), constraint pk_product primary key (product_id), constraint nn_product_episode check (episode_id is not null) ) ; alter table product add constraint fk_product foreign key (episode_id) references episode (episode_id) ; alter table product add constraint fk_product_type foreign key (prod_type_id) references product_type (prod_type_id) ; alter table product add constraint fk_prod_sub_type foreign key (prod_sub_type_id) references product_sub_type (prod_sub_type_id) ; -- -- Requests -- create table request ( request_id number (*,0), department_id number (*,0), site_id number (*,0), cross_ref_id varchar2 (11), padding varchar2 (80), padding2 varchar2 (80), constraint pk_request primary key (request_id), constraint nn_request_department check (department_id is not null), constraint nn_request_site_id check (site_id is not null) ) ; -- -- Activity & Users -- create table activity ( activity_id number (*,0), user_id number (*,0), episode_id number (*,0), request_id number (*,0), -- always NULL! padding varchar2 (80), constraint pk_activity primary key (activity_id) ) ; alter table activity add constraint fk_activity_episode foreign key (episode_id) references episode (episode_id) ; alter table activity add constraint fk_activity_request foreign key (request_id) references request (request_id) ; -- create table app_users ( user_id number (*,0), user_name varchar2 (20), start_date date, padding varchar2 (80), constraint pk_users primary key (user_id) ) ; prompt Loading episode ... -- insert into episode with generator as (select rownum r from (select rownum r from dual connect by rownum <= 1000) a, (select rownum r from dual connect by rownum <= 1000) b, (select rownum r from dual connect by rownum <= 1000) c where rownum <= 1000000 ) select r, 2, sysdate + mod (r, 14), to_char (r, '0000000000'), 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' || to_char (r, '000000') from generator g where g.r <= 300000 / commit ; -- prompt Loading product_type ... -- insert into product_type with generator as (select rownum r from (select rownum r from dual connect by rownum <= 1000) a, (select rownum r from dual connect by rownum <= 1000) b, (select rownum r from dual connect by rownum <= 1000) c where rownum <= 1000000 ) select r, to_char (r, '000000000'), mod (r, 2), 'ABCDEFGHIJKLMNOPQRST' || to_char (r, '000000') from generator g where g.r <= 12 / commit ; -- prompt Loading product_sub_type ... -- insert into product_sub_type with generator as (select rownum r from (select rownum r from dual connect by rownum <= 1000) a, (select rownum r from dual connect by rownum <= 1000) b, (select rownum r from dual connect by rownum <= 1000) c where rownum <= 1000000 ) select r, to_char (r, '000000'), to_char (mod (r, 3), '000000'), 'ABCDE' || to_char (r, '000000') from generator g where g.r <= 15 / commit ; -- prompt Loading product ... -- -- product_id prod_type_id prod_sub_type_id episode_id padding insert into product with generator as (select rownum r from (select rownum r from dual connect by rownum <= 1000) a, (select rownum r from dual connect by rownum <= 1000) b, (select rownum r from dual connect by rownum <= 1000) c where rownum <= 1000000 ) select r, mod (r, 12) + 1, mod (r, 15) + 1, mod (r, 300000) + 1, decode (mod (r, 3), 0, 'I', 1, 'C', 2, 'X', 'U'), dbms_random.value (1, 100), NULL from generator g where g.r <= 100000 / commit ; -- prompt Loading request ... -- -- request_id department_id site_id cross_ref_id varchar2 (11) padding insert into request with generator as (select rownum r from (select rownum r from dual connect by rownum <= 1000) a, (select rownum r from dual connect by rownum <= 1000) b, (select rownum r from dual connect by rownum <= 1000) c where rownum <= 10000000 ) select r, mod (r, 4) + 1, 1, to_char (r, '0000000000'), 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890123456789' || to_char (r, '000000'), 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789012345678' || to_char (r, '000000') from generator g where g.r <= 4000000 / commit ; -- prompt Loading activity ... -- -- activity activity_id user_id episode_id request_id (NULL) padding insert into activity with generator as (select rownum r from (select rownum r from dual connect by rownum <= 1000) a, (select rownum r from dual connect by rownum <= 1000) b, (select rownum r from dual connect by rownum <= 1000) c where rownum <= 10000000 ) select r, mod (r, 50) + 1, mod (r, 300000) + 1, NULL, NULL from generator g where g.r <= 100000 / commit ; -- prompt Loading app_users ... -- -- app_users user_id user_name start_date padding insert into app_users with generator as (select rownum r from (select rownum r from dual connect by rownum <= 1000) a, (select rownum r from dual connect by rownum <= 1000) b, (select rownum r from dual connect by rownum <= 1000) c where rownum <= 10000000 ) select r, 'User_' || to_char (r, '000000'), sysdate - mod (r, 30), 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' || to_char (r, '000000') from generator g where g.r <= 1000 / commit ; -- prompt Episode (1) create index ix1_episode_cross_ref on episode (cross_ref_id) ; -- prompt Product (2) create index ix1_product_episode on product (episode_id) ; create index ix2_product_type on product (prod_type_id) ; -- prompt Request (4) create index ix1_request_site on request (site_id) ; create index ix2_request_dept on request (department_id) ; create index ix3_request_cross_ref on request (cross_ref_id) ; -- The extra index on the referenced columns!! create index ix4_request on request (cross_ref_id, site_id) ; -- prompt Activity (2) create index ix1_activity_episode on activity (episode_id) ; create index ix2_activity_request on activity (request_id) ; -- prompt Users (1) create unique index ix1_users_name on app_users (user_name) ; -- prompt Gather statistics on schema ... -- exec dbms_stats.gather_schema_stats ('JB')
10053 - updated the Query*************************************** SINGLE TABLE ACCESS PATH ----------------------------------------- BEGIN Single Table Cardinality Estimation ----------------------------------------- Table: REQUEST Alias: REQUEST Card: Original: 3994236 Rounded: 3994236 Computed: 3994236.00 Non Adjusted: 3994236.00 ----------------------------------------- END Single Table Cardinality Estimation ----------------------------------------- Access Path: TableScan Cost: 28806.24 Resp: 28806.24 Degree: 0 Cost_io: 28738.00 Cost_cpu: 1594402830 Resp_io: 28738.00 Resp_cpu: 1594402830 ******** Begin index join costing ******** ****** trying bitmap/domain indexes ****** Access Path: index (FullScan) Index: PK_REQUEST resc_io: 7865.00 resc_cpu: 855378926 ix_sel: 1 ix_sel_with_filters: 1 Cost: 7901.61 Resp: 7901.61 Degree: 0 Access Path: index (FullScan) Index: PK_REQUEST resc_io: 7865.00 resc_cpu: 855378926 ix_sel: 1 ix_sel_with_filters: 1 Cost: 7901.61 Resp: 7901.61 Degree: 0 ****** finished trying bitmap/domain indexes ****** ******** End index join costing ******** Best:: AccessPath: TableScan Cost: 28806.24 Degree: 1 Resp: 28806.24 Card: 3994236.00 Bytes: 0 ****************************************************************************** SINGLE TABLE ACCESS PATH ----------------------------------------- BEGIN Single Table Cardinality Estimation ----------------------------------------- Table: REQUEST Alias: REQUEST Card: Original: 3994236 Rounded: 3994236 Computed: 3994236.00 Non Adjusted: 3994236.00 ----------------------------------------- END Single Table Cardinality Estimation ----------------------------------------- Access Path: TableScan Cost: 28806.24 Resp: 28806.24 Degree: 0 Cost_io: 28738.00 Cost_cpu: 1594402830 Resp_io: 28738.00 Resp_cpu: 1594402830 Access Path: index (index (FFS)) Index: IX4_REQUEST resc_io: 3927.00 resc_cpu: 583211030 ix_sel: 0.0000e+00 ix_sel_with_filters: 1 Access Path: index (FFS) Cost: 3951.96 Resp: 3951.96 Degree: 1 Cost_io: 3927.00 Cost_cpu: 583211030 Resp_io: 3927.00 Resp_cpu: 583211030 Access Path: index (FullScan) Index: IX4_REQUEST resc_io: 14495.00 resc_cpu: 903225273 ix_sel: 1 ix_sel_with_filters: 1 Cost: 14533.66 Resp: 14533.66 Degree: 1 ******** Begin index join costing ******** ****** trying bitmap/domain indexes ****** Access Path: index (FullScan) Index: IX4_REQUEST resc_io: 14495.00 resc_cpu: 903225273 ix_sel: 1 ix_sel_with_filters: 1 Cost: 14533.66 Resp: 14533.66 Degree: 0 Access Path: index (FullScan) Index: IX4_REQUEST resc_io: 14495.00 resc_cpu: 903225273 ix_sel: 1 ix_sel_with_filters: 1 Cost: 14533.66 Resp: 14533.66 Degree: 0 ****** finished trying bitmap/domain indexes ****** ******** End index join costing ******** Best:: AccessPath: IndexFFS Index: IX4_REQUEST Cost: 3951.96 Degree: 1 Resp: 3951.96 Card: 3994236.00 Bytes: 0 ***************************************I mentioned that it is a bug related to the ANSI SQL standard and transformation probably.
As suggested/asked in my first reply:
1. If you use a no_query_transformation then you should find that you get the use of the index (although not in the plan you would expect)
2. If you use the traditional Oracle syntax, then you should not have the same problem. -
Xps420 bluray player BD - RE of PLDS DH - 4B1S burn BD - RE discs, but fails to burn BD - R discs
I have a XPS420 running Windows Vista (32) Ultimate with SP1. My blu - ray burner is BD - RE of PLDS DH - 4B1S. All the drivers for my system are up-to-date, including the latest firmware 7 13 for the burner, and all the bluray, engraving software is up to date.
I can burn Blu - ray rewritable (BD - RE) discs without problem but the system still shuts down and restarts (but crashes then) with an error message when you try to burn Blu - ray rewritable (BD - R). Medium used is Sony BD - RE 50 GB and Sony BD - R (25 GB) and Verbatim BD - R (25 GB).
I get the error message is:
"Drive 1 not found: Serial ATA, SATA-1".
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The attention! Impossible to detect one or more drives during POST. »
BD - R discs, I can see changes in the color of die that the original file has probably been written to disk, but the problem is after this step. Once I have restart Vista discs BD - R defective also show that they contain files and in, for example, ULead MovieFactory6 may be progressed throughout the process of 'close disc' but which are then struck with the message "this disc is unrecognizable.
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