Performance regarding view
hi,
i have a view named CREATE OR REPLACE VIEW TAX_AMT_VIEW
(PTIN_NO, AMOUNT)
AS
select I_ASMTNO PTIN_NO,
(D_CRNPT+D_CRNED+D_CRNLCS+D_CRNUAUTHCNSTPLTY+D_ARRPT+D_ARRED+D_ARRLCS
D_ARRUAUTHCNSTPLTYD_PLTYONARR+D_ADVAMT) AMOUNT
from DMA12.PT_ASMTRCPT_TBL;
i am retrewing data from this view from another view CREATE OR REPLACE VIEW TAX_COLLECTION_OTHER
(CIRCLE_NO, AMT_LKS, TOTAL)
AS
SELECT SUM(B.AMOUNT)/100000 AMT_LKS,count(b.ptin_no) TOTAL FROM dma12.PT_RECEIPT_TBL B,dma12.PT_ASSE_PTIN_NOINFORMATION A,
A.PTIN_NO=B.PTIN_NO
how can i make my view faster.
i can i do the summation faster
can any one suggest me
regards,
kishore
alter system set __fast=true scope=spfile
or
read the performance tuning manual for your version
In absence of any relevant information like
version
result of dbms_xplan.display
which optimizer being used
which columns are indexed
do you use system stats,
what did you try
etc, etc, etc
Question: if you don't want to share any information, yet are asking about a specific statement, why do you request help?
Do you expect people here are clairvoyant?
Sybrand Bakker
Senior Oracle DBA
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[sql performance] inline view , group by , max, join
Hi. everyone.
I have a question with regard to "group by" inline view ,
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I will give you simple table definitions in order for you
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Table A (parent)
C1
C2
C3
Table B (child)
C1
C2
C3
C4 number type(sequence number)
1. c1, c2, c3 are the key columns of tabla A.
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4. c4 column of table b is the serial number.
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Table A and table B are big tables, which have more than
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I will be waiting for your advice and every response
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HO.
Message was edited by:
user507290For such big sources check that
1) you use full scans, hash joins or at least merge joins
2) you scan your source data as less as possible. In the best case each necessary table only once (for example not using exists clause to effectively scan all table via index scan).
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6) run trace and check on what are you waiting for
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http://www.gplivna.eu -
Performance ora:view and collection()
ora:view allows an XML structured table to be used in a XQuery "for" clause, while collection processes a set of documents in a directory. Normally these are two different sets of data.
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Regards,
Geoff -
Hi Guys,
I have a view which is made for four different Views ,
Now The Problem is Its Taking lot of time to Run as the sub Views are having Lot of conditions and joins.
What are the Options I have except making Mview of the same to increase performance of the Main View .
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1) you don't "use nested joins" in a query. you do joins, and then let the optimizer decide whether they are going to be implemented as nested loops, hash joins or merge joins
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Best regards,
Nikolay -
Hi,
I have created a complex view A with user defined function as column. Then created another view B by selecting from the previous view.
Now when I query the view B the perfornance well but when I use order by clause in the query then the performance become very poor. It takes very long time to execute.
Please help me to improve the performance.
Best Regards,no explain plan/trace/tkprof??
best guess: increase sort_area_size for your session.
Only a guess based on very limited information. -
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Hello All,
We noticed performance issue when tryi ng to select data from a view. Below is the detail on this view:
1. View Definition:
CREATE OR REPLACE FORCE VIEW baninst1.sgvacur (sgvacur_pidm,
sgvacur_seqno,
sgvacur_lmod_code,
sgvacur_term_code,
sgvacur_key_seqno,
sgvacur_priority_no,
sgvacur_roll_ind,
sgvacur_cact_code,
sgvacur_user_id,
sgvacur_data_origin,
sgvacur_activity_date,
sgvacur_levl_code,
sgvacur_coll_code,
sgvacur_degc_code,
sgvacur_term_code_ctlg,
sgvacur_term_code_end,
sgvacur_term_code_matric,
sgvacur_term_code_admit,
sgvacur_admt_code,
sgvacur_camp_code,
sgvacur_program,
sgvacur_start_date,
sgvacur_end_date,
sgvacur_curr_rule,
sgvacur_rolled_seqno,
sgvacur_rowid,
sgvacur_order,
sgvacur_active_ind,
sgvacur_stdn_rowid,
sgvacur_stdn_term_code_eff,
sgvacur_styp_code_stdn,
sgvacur_site_code,
sgvacur_rate_code,
sgvacur_styp_code,
sgvacur_leav_code,
sgvacur_leav_from_date,
sgvacur_leav_to_date,
sgvacur_exp_grad_date,
sgvacur_term_code_grad,
sgvacur_acyr_code,
sgvacur_appl_key_seqno,
sgvacur_appl_seqno,
sgvacur_majr_code_1,
sgvacur_dept_code_1,
sgvacur_curr_rule_majr_1,
sgvacur_majr_code_2,
sgvacur_curr_rule_majr_2,
sgvacur_dept_code_2,
sgvacur_majr_code_minr_1,
sgvacur_curr_rule_minr_1,
sgvacur_majr_code_minr_2,
sgvacur_curr_rule_minr_2,
sgvacur_majr_code_conc_1,
sgvacur_curr_rule_conc_1,
sgvacur_attach_majr_conc_1,
sgvacur_majr_code_conc_2,
sgvacur_curr_rule_conc_2,
sgvacur_attach_majr_conc_2,
sgvacur_majr_code_conc_3,
sgvacur_curr_rule_conc_3,
sgvacur_attach_majr_conc_3,
sgvacur_majr_code_conc_4,
sgvacur_curr_rule_conc_4,
sgvacur_attach_majr_conc_4,
sgvacur_majr_code_conc_5,
sgvacur_curr_rule_conc_5,
sgvacur_attach_majr_conc_5,
sgvacur_majr_code_conc_6,
sgvacur_curr_rule_conc_6,
sgvacur_attach_majr_conc_6
AS
SELECT sorlcur_pidm, sorlcur_seqno, sorlcur_lmod_code, sorlcur_term_code,
sorlcur_key_seqno, sorlcur_priority_no, sorlcur_roll_ind,
sorlcur_cact_code, sorlcur_user_id, sorlcur_data_origin,
sorlcur_activity_date, sorlcur_levl_code, sorlcur_coll_code,
sorlcur_degc_code, sorlcur_term_code_ctlg, sorlcur_term_code_end,
sorlcur_term_code_matric, sorlcur_term_code_admit,
sorlcur_admt_code, sorlcur_camp_code, sorlcur_program,
sorlcur_start_date, sorlcur_end_date, sorlcur_curr_rule,
sorlcur_rolled_seqno, sorlcur.ROWID,
sb_curriculum.f_lcur_order (sgbstdn_pidm,
sb_curriculum_str.f_learner,
sorlcur_term_code,
99,
sorlcur.ROWID,
sgbstdn_term_code_eff
sobcact_active_ind, sgbstdn.ROWID, sgbstdn_term_code_eff,
sgbstdn_styp_code, NVL (sorlcur_site_code, sgbstdn_site_code),
NVL (sorlcur_rate_code, sgbstdn_rate_code), sorlcur_styp_code,
NVL (sorlcur_leav_code, sgbstdn_leav_code),
NVL (sorlcur_leav_from_date, sgbstdn_leav_from_date),
NVL (sorlcur_leav_to_date, sgbstdn_leav_to_date),
NVL (sorlcur_exp_grad_date, sgbstdn_exp_grad_date),
NVL (sorlcur_term_code_grad, sgbstdn_term_code_grad),
NVL (sorlcur_acyr_code, sgbstdn_acyr_code), sorlcur_appl_key_seqno,
sorlcur_appl_seqno, prim_major.sorlfos_majr_code,
prim_major.sorlfos_dept_code, prim_major.sorlfos_lfos_rule,
sec_major.sorlfos_majr_code, sec_major.sorlfos_dept_code,
sec_major.sorlfos_lfos_rule, prim_minor.sorlfos_majr_code,
prim_minor.sorlfos_lfos_rule, sec_minor.sorlfos_majr_code,
sec_minor.sorlfos_lfos_rule, prim_conc.sorlfos_majr_code,
prim_conc.sorlfos_lfos_rule, prim_conc.sorlfos_majr_code_attach,
sec_conc.sorlfos_majr_code, sec_conc.sorlfos_lfos_rule,
sec_conc.sorlfos_majr_code_attach, third_conc.sorlfos_majr_code,
third_conc.sorlfos_lfos_rule, third_conc.sorlfos_majr_code_attach,
fourth_conc.sorlfos_majr_code, fourth_conc.sorlfos_lfos_rule,
fourth_conc.sorlfos_majr_code_attach, fifth_conc.sorlfos_majr_code,
fifth_conc.sorlfos_lfos_rule, fifth_conc.sorlfos_majr_code_attach,
six_conc.sorlfos_majr_code, six_conc.sorlfos_lfos_rule,
six_conc.sorlfos_majr_code_attach
FROM sorlfos six_conc,
sorlfos fifth_conc,
sorlfos fourth_conc,
sorlfos third_conc,
sorlfos sec_conc,
sorlfos prim_conc,
sorlfos sec_minor,
sorlfos prim_minor,
sorlfos sec_major,
sorlfos prim_major,
sobcact,
sorlcur,
sgbstdn
WHERE six_conc.ROWID(+) =
soklcur.f_lfos_rowid (sorlcur_lmod_code,
sorlcur_seqno,
sb_fieldofstudy_str.f_concentration,
sorlcur_pidm,
sorlcur_term_code,
NULL,
6
AND fifth_conc.ROWID(+) =
soklcur.f_lfos_rowid (sorlcur_lmod_code,
sorlcur_seqno,
sb_fieldofstudy_str.f_concentration,
sorlcur_pidm,
sorlcur_term_code,
NULL,
5
AND fourth_conc.ROWID(+) =
soklcur.f_lfos_rowid (sorlcur_lmod_code,
sorlcur_seqno,
sb_fieldofstudy_str.f_concentration,
sorlcur_pidm,
sorlcur_term_code,
NULL,
4
AND third_conc.ROWID(+) =
soklcur.f_lfos_rowid (sorlcur_lmod_code,
sorlcur_seqno,
sb_fieldofstudy_str.f_concentration,
sorlcur_pidm,
sorlcur_term_code,
NULL,
3
AND sec_conc.ROWID(+) =
soklcur.f_lfos_rowid (sorlcur_lmod_code,
sorlcur_seqno,
sb_fieldofstudy_str.f_concentration,
sorlcur_pidm,
sorlcur_term_code,
NULL,
2
AND prim_conc.ROWID(+) =
soklcur.f_lfos_rowid (sorlcur_lmod_code,
sorlcur_seqno,
sb_fieldofstudy_str.f_concentration,
sorlcur_pidm,
sorlcur_term_code,
NULL,
1
AND sec_minor.ROWID(+) =
soklcur.f_lfos_rowid (sorlcur_lmod_code,
sorlcur_seqno,
sb_fieldofstudy_str.f_minor,
sorlcur_pidm,
sorlcur_term_code,
NULL,
2
AND prim_minor.ROWID(+) =
soklcur.f_lfos_rowid (sorlcur_lmod_code,
sorlcur_seqno,
sb_fieldofstudy_str.f_minor,
sorlcur_pidm,
sorlcur_term_code,
NULL,
1
AND sec_major.ROWID(+) =
soklcur.f_lfos_rowid (sorlcur_lmod_code,
sorlcur_seqno,
sb_fieldofstudy_str.f_major,
sorlcur_pidm,
sorlcur_term_code,
NULL,
2
AND prim_major.ROWID =
soklcur.f_lfos_rowid (sorlcur_lmod_code,
sorlcur_seqno,
sb_fieldofstudy_str.f_major,
sorlcur_pidm,
sorlcur_term_code,
NULL,
1
AND sobcact_cact_code = sorlcur_cact_code
AND sorlcur_lmod_code = sb_curriculum_str.f_learner
AND sorlcur_pidm = sgbstdn_pidm;2. the execution plan when select * from SGVACUR;
SQL> @explain_SGVACUR.sql
Explained.
PLAN_TABLE_OUTPUT
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)|
| 0 | SELECT STATEMENT | | 1 | 166 | | 18E(100)|
| 1 | SORT AGGREGATE | | 1 | 166 | | |
| 2 | MERGE JOIN | | 18E| 15E| | 18E(100)|
| 3 | SORT JOIN | | 18E| 15E| 15E| 18E(100)|
| 4 | MERGE JOIN OUTER | | 18E| 15E| | 18E(100)|
| 5 | SORT JOIN | | 18E| 15E| 15E| 18E(100)|
| 6 | MERGE JOIN OUTER | | 18E| 15E| | 18E(100)|
| 7 | SORT JOIN | | 18E| 15E| 15E| 18E(100)|
| 8 | MERGE JOIN OUTER | | 18E| 15E| | 18E(100)|
| 9 | SORT JOIN | | 18E| 15E| 15E| 18E(100)|
| 10 | MERGE JOIN OUTER | | 18E| 15E| | 18E(100)|
| 11 | SORT JOIN | | 18E| 15E| 15E| 18E(100)|
| 12 | MERGE JOIN OUTER | | 18E| 15E| | 18E(100)|
| 13 | SORT JOIN | | 18E| 15E| 15E| 629P(100)|
| 14 | MERGE JOIN OUTER | | 18E| 15E| | 19P(100)|
| 15 | SORT JOIN | | 269P| 15E| 15E| 51T(100)|
| 16 | MERGE JOIN OUTER | | 269P| 15E| | 1920G(100)|
| 17 | SORT JOIN | | 27T| 1722T| 3768T| 5369M (76)|
| 18 | HASH JOIN RIGHT OUTER | | 27T| 1722T| 22M| 201M (96)|
| 19 | INDEX FAST FULL SCAN | PK_SORLFOS | 994K| 11M| | 1049 (2)|
| 20 | HASH JOIN OUTER | | 2722M| 147G| 15M| 24972 (79)|
| 21 | HASH JOIN | | 273K| 12M| 3808K| 2648 (5)|
| 22 | INDEX FAST FULL SCAN| IDX$$_AE220001 | 228K| 1118K| | 167 (2)|
| 23 | HASH JOIN | | 143K| 5765K| | 1928 (6)|
| 24 | INDEX FULL SCAN | PK_SOBCACT | 4 | 36 | | 1 (0)|
| 25 | TABLE ACCESS FULL | SORLCUR | 143K| 4499K| | 1926 (6)|
| 26 | INDEX FAST FULL SCAN | PK_SORLFOS | 994K| 11M| | 1049 (2)|
| 27 | SORT JOIN | | 994K| 11M| 38M| 5624 (2)|
| 28 | INDEX FAST FULL SCAN | PK_SORLFOS | 994K| 11M| | 1049 (2)|
| 29 | SORT JOIN | | 994K| 11M| 38M| 5624 (2)|
| 30 | INDEX FAST FULL SCAN | PK_SORLFOS | 994K| 11M| | 1049 (2)|
| 31 | SORT JOIN | | 994K| 11M| 38M| 5624 (2)|
| 32 | INDEX FAST FULL SCAN | PK_SORLFOS | 994K| 11M| | 1049 (2)|
| 33 | SORT JOIN | | 994K| 11M| 38M| 5624 (2)|
| 34 | INDEX FAST FULL SCAN | PK_SORLFOS | 994K| 11M| | 1049 (2)|
| 35 | SORT JOIN | | 994K| 11M| 38M| 5624 (2)|
| 36 | INDEX FAST FULL SCAN | PK_SORLFOS | 994K| 11M| | 1049 (2)|
| 37 | SORT JOIN | | 994K| 11M| 38M| 5624 (2)|
| 38 | INDEX FAST FULL SCAN | PK_SORLFOS | 994K| 11M| | 1049 (2)|
| 39 | SORT JOIN | | 994K| 11M| 38M| 5624 (2)|
| 40 | INDEX FAST FULL SCAN | PK_SORLFOS | 994K| 11M| | 1049 (2)|
| 41 | SORT JOIN | | 994K| 11M| 38M| 5624 (2)|
| 42 | INDEX FAST FULL SCAN | PK_SORLFOS | 994K| 11M| | 1049 (2)|
--------------------------------------------------------------------------------------------------------3. Doe anyone have any thoughts and suggestion as to how to speed up the view performance?
Your input is greatly appreciated! Thanks!riedelme wrote:
jgarry wrote:
riedelme wrote:
Only four tables... there is a severe problem with implementation of relational design, if any such design was even done.
Techincially, only 4 different tables, but lots of repeat usage as logical other tables reading the same tables many times. Whatever.
The problem lies deep, and I don't mean in code.No argument! I'm still with Tanel on the functions, thoughI'm wondering if the MV suggestion really isn't a joke, but actually a reasonable suggestion. You guys are a lot better on these issues than me, so I'm curious if this is a reasonable argument:
There are several self-outer-joins. This implies too much denormilization (assuming there was normalized design to begin with, given the fact of this kind of design, I'm ignoring my gut feel it was all just thrown together). So what happens? The rows are added physically near to each other in blocks, since they are added at the same time. This has the effect of making a kind of sparse file - when the database gathers blocks on each run through the full table scan, it is only getting those that satisfy the condition of that part of the query, actually using multiblock reads to grab lots of blocks that mostly don't have the data needed. Then it has to do it again over the same blocks for the next outer join part. And etc. for all those outer joins.
Now, if MV was used to split those into separate tables, each full scan would grab denser blocks in a multiblock read fashion, and there would be fewer of them. There might even be enough information for the optimizer to do some probing, or perhaps even stopkeys. This might be an order of magnitude faster, simply from densification.
Insane, or crazy like a fox?
I'm also wondering if there might be some really tricky analytic function to make it all work with one pass, but that's just way over my head. -
Bad performance: Xpath View causes database server almost 100% cpu
Hi there,
Since I am rather inexperienced in using the Oracle XML DB I wonder If I am doing wrong with the following:
I created a table with a xmltype column in it:
CREATE TABLE LPD_LOAD_XML
FILENAME VARCHAR2(50 BYTE) NOT NULL,
XML_CONTENT SYS.XMLTYPE,
DATE_CREATED DATE DEFAULT sysdate NOT NULL,
CREATED_BY VARCHAR2(30 BYTE) DEFAULT user NOT NULL
and I am using a xpath query to retrieve the data which is stored in the xmltype column:
select extractvalue(value(p),'/medobj@barcode') barcode
, extractvalue(value(p),'/medobj@VJ') vj
, extractvalue(value(p),'/medobj@FNF') fnf
, extractvalue(value(p),'/medobj@GLB') glb
, cast ( multiset ( select extractvalue(value(q),'/author@cap') cap
, extractvalue(value(q),'/author/name/addpre') addpre
, extractvalue(value(q),'/author/name/fname') fname
, extractvalue(value(q),'/author/name/prefix') prefix
, extractvalue(value(q),'/author/name/lname') lname
, extractvalue(value(q),'/author/name/addapp') addapp
from TABLE(xmlsequence(EXTRACT(value(p),'medobj/author'))) q
) as authors_type_nst
) as authors_type
, cursor(select extractvalue(value(q),'/corp.author') corp_author
from TABLE(xmlsequence(EXTRACT(value(p),'medobj/corp.author'))) q
, extractvalue(value(p),'/medobj/isbd/auti') auti
, extractvalue(value(p),'/medobj/isbd/edition') edition
, cursor(select extractvalue(value(q),'/impressum/pofpublication') pofpublication
, extractvalue(value(q),'/impressum/publisher') publisher
, extractvalue(value(q),'/impressum/pyr') pyr
from TABLE(xmlsequence(EXTRACT(value(p),'medobj/isbd/impressum'))) q
, extractvalue(value(p),'/medobj/isbd/collation/extent') extent
, extractvalue(value(p),'/medobj/isbd/collation/illustration') illustration
, extractvalue(value(p),'/medobj/isbd/collation/size') size_
, extractvalue(value(p),'/medobj/isbd/collation/enclosure') enclosure
, cursor(select extractvalue(value(q),'/series/series.title') series_title
, extractvalue(value(q),'/series/series.nr') series_nr
from TABLE(xmlsequence(EXTRACT(value(p),'medobj/isbd/series'))) q
, extractvalue(value(p),'/medobj/isbd/part') part
, extractvalue(value(p),'/medobj/isbd/annotation') annotation
, extractvalue(value(p),'/medobj/isbdblock') isdbblock
, extractvalue(value(p),'/medobj/isbn/t') isbn_t
, extractvalue(value(p),'/medobj/isbn/d') isbn_d
, extractvalue(value(p),'/medobj/isbn/uh') isbn_uh
, cursor(select extractvalue(value(q),'/isbn2/t') isbn2_t
, extractvalue(value(q),'/isbn2/d') isbn2_d
, extractvalue(value(q),'/isbn2/uh') isbn2_uh
from TABLE(xmlsequence(EXTRACT(value(p),'medobj/isbn2'))) q
, cursor(select extractvalue(value(q),'/label') label
from TABLE(xmlsequence(EXTRACT(value(p),'medobj/label'))) q
, extractvalue(value(p),'/medobj/ppn') ppn
, cursor(select extractvalue(value(q),'/note') note
from TABLE(xmlsequence(EXTRACT(value(p),'medobj/note'))) q
, extractvalue(value(p),'/medobj/sysreq') sysreq
, extractvalue(value(p),'/medobj/mat') mat
, extractvalue(value(p),'/medobj/lang.content') lang_content
, cursor(select extractvalue(value(q),'/siso@type') siso_type
, extractvalue(value(q),'/siso@rank') siso_rank
, extractvalue(value(q),'/siso') siso
from TABLE(xmlsequence(EXTRACT(value(p),'medobj/siso'))) q
, cursor(select extractvalue(value(q),'/subject@rank') rank
, extractvalue(value(q),'/subject') subject
from TABLE(xmlsequence(EXTRACT(value(p),'medobj/subjectheading/subject'))) q
, cursor(select extractvalue(value(q),'/genre/genre.full') genre_full
, extractvalue(value(q),'/genre/genre.abbr') genre_abbr
, extractvalue(value(q),'/genre/genre.cd') genre_cd
from TABLE(xmlsequence(EXTRACT(value(p),'medobj/genre'))) q
, extractvalue(value(p),'/medobj/agecat') agecat
, extractvalue(value(p),'/medobj/readinglevel') readinglevel
, extractvalue(value(p),'/medobj/avi') avi
, extractvalue(value(p),'/medobj/review') review
, extractvalue(value(p),'/medobj/reviewer') reviewer
, cursor(select extractvalue(value(q),'/cover') cover
from TABLE(xmlsequence(EXTRACT(value(p),'medobj/cover'))) q
from lpd_load_xml i
, TABLE(xmlsequence(EXTRACT(i.xml_content,'bmo/medobj'))) p
where i.filename = b_FileName
You can see that I am using both CAST MULTISET and a cursor, since I am finding out the best way. I have to use either one because the xml is stored in a hierarchical way. But now i am lost. What is most surprising to me is that the database server is really 100% dedicated in mastering this query. Is there anyway to avoid this? How can I retrieve the data in the xml file from within the database without causing a slow performance?
Greets,
William de RondeHave you created indexes on the XMLtype Column? Either way, if i am not mistaken then your XMLType column will default to XMLType CLOB storage. This will cause that your XML data will be put completly into memory regarding the inbetween resultsets. Use dmbs_xplan procedure, autotrace on (in sqlplus) or tkprof tools to find out whats happening. Did you generate statistics on your table via DBMS_GATHER_STATS package (don't use the analyze statment) ?
-
Regarding View Size Inside Tab Strip
Hi All,
I'm having a Tabstrip with 2 tabs. Inside which i'm having ViewContainerElememt on each tab. On Each View I'm having one dropdown & a table .
In the first Tab i'm also having a Text View.If there is no values in the dropdown then that text view ll be displayed and not the Table . If there is values in the drop down then the table ll dispaly & not the Text view.
Wat happens is,if there is value in the Dropdown then the table is getting displayed & the view is displaying in Full screen. If there is no value then the Textview is displaying.At that time the View Size is Reducing to Half.
How to fix the ViewContainer Element inside that Tab ?
I tried with giving Width as 100% but still it is not coming.
Helpful Answers ll be Rewarded.
Regards,
Padmam.Hi Padman
Set the height property of tabstrip control to some fixed value.i.e 800px or whatever you want. it will fix the height of each tab.
Regards
Naresh -
Hi,
Would be happy if some one clarifies the below doubt.
Oracle version : 10g
1. I have created a complex view ( say it would return 10million records).
2. This view contains some structures like inline view in it ( so i suppose
in the explain plan it may not be broken down to the base tables)
2. I am using that view in a select statment as below
select * from ( thisview)
where thisview.empno =12
and ..... (some more condition)
In this scenario my doubt is that would this be fetching all the records and filter
it using the conditions specified in the select statement?
Please let us know if some can help me regarding this.
Regards,Hi,
The best way is to run the explain plan and see what it does.
Where condition will be applied on base table. See the below example:
SQL> select * from employees
2 where first_name='XXX';
no rows selected
Execution Plan
Plan hash value: 2285394972
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 68 | 2 (0)| 00:00:01 |
| 1 | TABLE ACCESS BY INDEX ROWID| EMPLOYEES | 1 | 68 | 2 (0)| 00:00:01 |
|* 2 | INDEX RANGE SCAN | EMP_IDX | 1 | | 1 (0)| 00:00:01 |
Predicate Information (identified by operation id):
2 - access("FIRST_NAME"='XXX')
Statistics
8 recursive calls
0 db block gets
3 consistent gets
0 physical reads
0 redo size
874 bytes sent via SQL*Net to client
373 bytes received via SQL*Net from client
1 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
0 rows processed
SQL>
SQL> ed
Wrote file afiedt.buf
1* create view emp_view as select * from employees
SQL> /
View created.
SQL> set autotrace traceonly
SQL> select * from emp_view
2 where first_name='XXX';
no rows selected
Execution Plan
Plan hash value: 2285394972
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 68 | 2 (0)| 00:00:01 |
| 1 | TABLE ACCESS BY INDEX ROWID| EMPLOYEES | 1 | 68 | 2 (0)| 00:00:01 |
|* 2 | INDEX RANGE SCAN | EMP_IDX | 1 | | 1 (0)| 00:00:01 |
Predicate Information (identified by operation id):
2 - access("FIRST_NAME"='XXX')
Statistics
15 recursive calls
0 db block gets
5 consistent gets
0 physical reads
0 redo size
874 bytes sent via SQL*Net to client
373 bytes received via SQL*Net from client
1 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
0 rows processed
SQL>Regards,
Avinash -
hi
any body help me on hyperion build views for automation of dimension building using HAL to plannning application.data source is SQL server.how to create views for account, utility,product,customer dimensions.
Thanks
subbu.Hi ACP,
You can check it in table MARC/MARA. Field PSTAT. This gives the views created.
The overall maintenance status is made up of the individual maintenance
statuses. The individual maintenance statuses have the following
meaning:
User department Maintenance status
Work scheduling A
Accounting B
Classification C
MRP D
Purchasing E
Production resources/tools F
Costing G
Basic data K
Storage L
Forecasting P
Quality management Q
Warehouse management S
Sales V
Plant stocks X
Storage location stocks Z
kindly test your requirement with the Tcode MM50.
it will be surely helpful.
Let me kow the feedback.
Regards,
R.Brahmankar -
Hi all,
I want some material on all the types of views like database views projection view, help view, maintenance view. how to create them and how to use them in programs.
Thanks & Regards,
Saroja.hi,
Database View (SE11)
Database views are implement an inner join, that is,
only records of the primary table (selected via the join operation)
for which the corresponding records of the secondary tables also exist are fetched.
Inconsistencies between primary and secondary table could, therefore, lead to a reduced selection set.
In database views, the join conditions can be formulated using equality relationships between any base fields.
In the other types of view, they must be taken from existing foreign keys.
That is, tables can only be collected in a maintenance or help view if they are linked to one another via foreign keys.
- Help View ( SE54)
Help views are used to output additional information when the online help system is called.
When the F4 button is pressed for a screen field, a check is first made on whether a matchcode is defined for this field.
If this is not the case, the help view is displayed in which the check table of the field is the primary table.
Thus, for each table no more than one help view can be created,
that is, a table can only be primary table in at most one help view.
- Projection View
Projection views are used to suppress or mask certain fields in a table (projection), thus minimizing the number of interfaces. This means that only the data that is actually required is exchanged when the database is accessed.
A projection view can draw upon only one table. Selection conditions cannot be specified for projection views.
- Maintenance View ( SE54 )
Maintenance views enable a business-oriented approach to looking at data,
while at the same time, making it possible to maintain the data involved.
Data from several tables can be summarized in a maintenance view and maintained collectively via this view.
That is, the data is entered via the view and then distributed to the underlying tables by the system.
Creating Database View:
http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/21ed06446011d189700000e8322d00/content.htm
Creating Projection View:
http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/21ecc5446011d189700000e8322d00/frameset.htm
Creating Help View:
http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/21ecd2446011d189700000e8322d00/frameset.htm
Creating maintenance View:
http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/21ecdf446011d189700000e8322d00/frameset.htm
Re: what are the various views?
http://help.sap.com/saphelp_webas620/helpdata/en/cf/21ec5d446011d189700000e8322d00/content.htm
Regards
Reshma -
Hi i am doing standard Program modification with respect to OSS notes given by SAP.
in that they have given
The folllowing views should be generated after the DDIC changes.
J_1IVTXRAT for table J_1IEXCTAX
J_1IEXCDEF for table J_1IEXCDEF
J_1IEXCACC for table J_1IEXCACC
how we can proceed with this.
what is the view generation?
please help me.
thanks in advance.Hi,
Whenever you create Table maintenance generator from SE11 -> utilities-> table maintenance generator , a View will be created which allows you to enter the Values from SM30 Transaction.
So in this case also you are asked to generate the table maintenance for the 3 tables which in turns create the 3 views corresponding to the tables
J_1IEXCTAX
J_1IEXCDEF
J_1IEXCACC
Views for them are
J_1IVTXRAT
J_1IEXCDEF
J_1IEXCACC
Table maintenance creation steps:
table maintanance Generator is used to manually
input values using transaction sm30
follow below steps
1) go to se11 check table maintanance check box under
attributes tab
2) utilities-table maintanance Generator->
create function group and assign it under
function group input box.
also assign authorization group default &NC& .
3)
select standard recording routine radio in table
table mainitainence generator to move table
contents to quality and production by assigning
it to request.
4) select maintaience type as single step.
5) maintainence screen as system generated numbers
this dialog box appears when you click on create
button
6) save and activate table
reward points if useful
regards,
Anji
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