trunc (transaction_date) = trunc (sysdate) is there a performance issue?

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  We run Oracle 12 c. The Jena adapter has version 12.1.0.1.

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  By Oyvind

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• Difference between Sysdate and trunc (sysdate)?

  SYSDATE and trunc (sysdate) both return the current date.

  So I would like to know is there a difference between them?

  Thank you

  DATEs in Oracle ALWAYS have a portion of time (what you call a timestamp). Using tronque() on a DATE fixed the part time at midnight that day there

• With the help of trunc (sysdate) between

  Hello - I have a question about when to use trunc (sysdate).
  
  In particular, I wonder whether or not there are no reason to use trunc (sysdate) in the following statement:
  

  select app_id from app where sysdate between start_date and stop_date

  .. .or start_date and stop_date are stored truncated (not stored in the column time info).
  
  Thank you!

  To some extent, it depends on you want to return. If you ran the query today, and the date of the judgment was 21-sep-2011, would you record back or not? If Yes, then you need to trunc sysdate, given that the component "hour" of stop_date's midnight, and it's almost always after midnight for sysdate (86 399 seconds per day). If this isn't the case, then it is not serious.

  John

• What is the difference between TRUNC (SYSDATE + 1) and trunc (sysdate) + 1?

  Hello
  The two functions are truncated anyway. Is there a difference between the two, in this scenario?

  trunc(sysdate + 1) add 1 day to the sysdate and then truncating

  trunc (sysdate) + 1 truncating sysdate and then adds 1 day

  output will be the same.

• trunc sysdate returns 12:08 AM

  SELECT TO_CHAR (TRUNC (SYSDATE), ' MM/DD/YYYY hh: mm AM ")"Current Date and time"from DUAL;

  ----------

  21/08/2015-12:08 AM

  If this should not return 12:00 AM... ?

  I see the example, with the same output (where I got of) mentioned in this oradoc:

  http://docs.Oracle.com/CD/B19306_01/server.102/b14200/functions201.htm

  However, the textbooks I use show 12:00 as output. Maybe something's different in my initialization?

  MM is the month, not minutes

• Trunc (sysdate) question

  SQL dear Experts,
  
  You can specify the difference b/w the following 2 conditions. I see the same results with any of the conditions. I'm going to pull data for 24 hours and it is one of the terms I use in SQL:
  trunc (BEGIN_INTERVAL_TIME) between trunc(sysdate-1) and trunc(sysdate-1)
  
  trunc (BEGIN_INTERVAL_TIME) between trunc(sysdate-1) and trunc (sysdate)
  
  Published by: DBA112 on January 14, 2013 13:57

  >
  Don't forget that midnight is 00:00:00 No 24:60: 60. Midnight is still the beginning of a day.
  >
  Fix! But that's only the half of it! Midnight is also the END of a day.

  http://en.Wikipedia.org/wiki/midnight
  >
  Midnight marks the beginning and the end of each day in civil time throughout the world. This is the point of division between one day and the next.

• Error that using TO_CHAR (TRUNC (SYSDATE), 'DAY') FROM DUAL

  Hello everyone.
  
  I have a pl/sql procedure that contains TO_CHAR (TRUNC (SYSDATE), 'DAY') FROM DUAL to capture the DAY in a variable. Now when I access this procedure of someother application (Workflow), I get the error ORA-01841: (full) year must be understood between-4713 and 9999 and not be 0.
  
  If I do not use TO_CHAR (TRUNC (SYSDATE), 'DAY') and hardcode the value, it throws no error.
  
  Any ideas on this error?
  
  Is this something to do with the NLS_DATE?
  
  Thank you
  
  Kind regards
  
  Pavan K

  >
  ...

  IF (TRIM (SAT_DAY) = 'SATURDAY')
  THEN
  L_DAYS: = L_DAYS + 2;
  ELSIF (TRIM (SAT_DAY) = "SUNDAY")
  THEN
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  ON THE OTHER
  L_DAYS: = 1; - FND_PROFILE. VALUE ('DSD_PAF_TIMEOUT'); -Getting the value of timeouit in days
  END IF;
  L_DAYS: = L_DAYS * 24 * 60;

  First, you add two days if it's a Sunday.
  Then you multiply by 24 * 60.
  Are you sure that this logic is ok?

  I guess you just use bad values for the L_days parameter.

  The difference between last Friday and today, without doubt is:

  last Friday, the variable L_days has been VERY VERY VERY big, for example 20000000 = (x + 2) * 24 * 60)

  Today, it's only 1 * 24 * 60 = 1440.

  Published by: W. Sven on September 21, 2009 18:01

  Looking at the error message...

  ORA-01841: (full) year must be between-4713 and 9999

  My current guess is that you have created a date that goes beyond the year 9999.

  Published by: W. Sven on September 21, 2009 18:05

• Performance issue with the query when join OKS and tables of the IB

  Hello

  I'm developing an integration for the automation of RMA through repair. The type of repair order is based on the details of the guarantee. This check must be made for each record.

  Request for detailed below, I wrote, but it of a long way and slows down my program. Without this validation, it works perfectly.

  The problem is the join of tables with OKS IB, he kills performance. I also try to my side,

  any suggestion or help is appreciated. Here's the query in the program:

  SELECT DISTINCT (TYPE |) '-' || service | '-' || status)

  IN v_war_details

  FROM (SELECT TO_NUMBER (linesb.line_number) line,

  DECODE

  (fnd_profile. VALUE

  ('OKS_LINE_MIRR_NAME_OR_DESC'),

  'DISPLAY_NAME', sysitems.concatenated_segments,

  "DISPLAY_DESC", sysitems.description

  ) service.

  linestyletl.NAME TYPE,

  status of ststl.meaning,

  start_date linesb.start_date,

  linesb.end_date end_date,

  oks_misc_util_web.duration_period

  (linesb.start_date,

  linesb.end_date

  ) DURATION OF,.

  TimeUnit.unit_of_measure_tl period

  Of okc_k_lines_b linesb,.

  okc_k_lines_tl linestl,

  okc_line_styles_b linestyleb,

  okc_line_styles_tl linestyletl,

  okc_k_headers_all_b hdr,

  oks_k_lines_b slines,

  okc_k_items kitems,

  mtl_system_items_b1_kfv sysitems,

  okc_statuses_b stsb,

  okc_statuses_tl ststl,

  mtl_units_of_measure_tl timeunit,

  okc_lookups_v rentype,

  Glu mtl_units_of_measure_tl

  WHERE linesb.cle_id IS NULL

  AND linesb.ID = linestl.ID

  AND linestl. LANGUAGE = USERENV ("LANG")

  AND linesb.lse_id = linestyleb.ID

  AND linesb.lse_id (1, 12, 14, 19, 46)

  AND linestyleb.ID = linestyletl.ID

  AND linestyletl. LANGUAGE = USERENV ("LANG")

  AND linesb.chr_id = hdr.ID

  AND linesb.ID = slines.cle_id

  AND linesb.ID = kitems.cle_id

  AND kitems.object1_id1 =

  SysItems.inventory_item_id

  AND kitems.object1_id2 =

  SysItems.organization_id

  AND kitems.uom_code = uom.uom_code (+)

  AND unit of measure. LANGUAGE (+) = USERENV ("LANG")

  AND linesb.sts_code = stsb.code

  AND stsb.code = ststl.code

  AND ststl. LANGUAGE = USERENV ("LANG")

  AND timeunit.uom_code =

  oks_misc_util_web.duration_unit

  (linesb.start_date,

  linesb.end_date

  )

  AND timeunit. LANGUAGE = USERENV ("LANG")

  AND linesb.line_renewal_type_code = rentype.lookup_code (+)

  AND rentype.lookup_type (+) =

  'OKC_LINE_RENEWAL_TYPE '.

  AND (IN) hdr.ID

  SELECT kh.ID

  Of okc_k_headers_all_b kh.

  okc_k_lines_b kl,

  Ki okc_k_items,

  okc_line_styles_v ks,

  csi_item_instances c,

  mtl_system_items_b I have

  WHERE kh.org_id = p_org_id

  AND c.instance_id = p_instance_id

  AND c.serial_number = p_serial_num

  AND i.inventory_item_id =

  p_inventory_item_id

  AND kh.contract_number_modifier IS NULL

  -can be filled

  AND kh.ID = kl.dnz_chr_id

  AND kh.ID = ki.dnz_chr_id

  AND kl.ID = ki.cle_id

  AND kl.lse_id = ks.ID

  AND IN ki.jtot_object1_code

  ("OKX_CUSTPROD")

  AND c.last_vld_organization_id =

  i.organization_id

  AND TO_NUMBER (ki.object1_id1) =

  c.INSTANCE_ID

  AND c.inventory_item_id =

  i.inventory_item_id))

  Service = 'GUARANTEE '.

  AND TRUNC (SYSDATE) BETWEEN start_date AND end_date;

  Not sure where it would be so I put it in the section SQL/PLSQL.

  Kind regards

  Prashant

  Found the solution

  AND TO_NUMBER (ki.object1_id1) = c.instance_id

  replaced by to_char (c.instance_id) = ki.object1_id1 AND

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  I am creating an application to display graphics (large), for example:

  

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  Basically, try some optimization of performance ranging from the simple to the complex.   Each of the changes below may provide you with an increase in performance.  Some will probably increase performance much more that others (depending on where is the real bottleneck).  I would probably start by replace the paths to the lines and reduce the number of Platform.runLater calls (as adding nodes that fall within the viewport can be difficult only).

  > The framerate drop even when all the nodes are outside the viewport.

  Place the nodes in the graph, which fall inside the viewport.

  > Is Platform.runLater () call to 2000 times a minute too?

  Yes, there is no reason to call it more than 60 times a minute when the framerate of JavaFX is capped at 60 frames per second by default.

  > This might just be a problem with my graphics card? (I have an Intel HD Graphics 3000)

  Yes, it's a graphics system relatively low-end.  But, look at the comment of developer below - your CPU and choice of graphic primitives can also affect rendering speed.

  > Adding circles and the paths to a StackPane

  You don't need a StackPane to this, a group is a container easier and probably better.

  > may be semi-transparant

  Remove transparency * may * cause acceleration.

  ----

  You run may be:

  https://JavaFX-JIRA.Kenai.com/browse/RT-20405 : improve the rendering of path performance

  Maybe if you use lines rather than the paths, performance might improve.

  A comment by a developer on this performance tweak application is:

  «It is quite normal for applications that use arbitrary paths (if the node path objects, SVGPath, polyline, or polygon) because these paths are rendered in software.» As card circle, Ellipse, line and Rectangle very primitive forms easily to the operations that can be performed entirely on the GPU, which makes them essentially cheap. There is no need to compare the rendering of a complicated shape for rendering of simple primitives for this reason. »

  ----

  Setting the cache indicators can help, but probably only if you animate nodes.

  ----

  Present level of detail of your graph functionality so a chart with zoom out is not make as many nodes as a part of zoomed in.

  ----

  You run any code important calculation on the JavaFX application thread that could stall it?

  Can make you available a ftom so that others can reproduce your problems?

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