gaps in the sequence numbers

Similar Questions

• gaps in the sequences being cached

  Would like to know if the sequences are defined the cache is it possible to see gaps in the sequence if a process such as rman or a long period of time accures.
  
  I'm trying to identify why we have gaps. I read a little, if the system boils then the sequence in the cache would be lost and Oracle would get the next set of numbers.
  
  10.2.0.4
  Linux
  
  Thank you
  Steve

  user12551219 wrote:

  Would like to know if the sequences are defined the cache is it possible to see gaps in the sequence if a process such as rman or a long period of time accures.

  I'm trying to identify why we have gaps. I have

  Oracle sequences will always be gaps for various reasons, a restoration is one, caching and data base closures are others. Caching of the sequences produced better performance.

  The answer is to not care that there are gaps in sequence.

  http://asktom.Oracle.com/pls/Apex/f?p=100:11:0:P11_QUESTION_ID:4343369880986

  A sequence is a unique identifier and not a counter, store a number of rows in a table is non-relational and not to carry out or scaling. If the lines are to be counted, they should be counted when they are selected.

  If you are concerned about the number of losing because you can escape, I worry for some time or the other.

  Re: What kind of operation on the inside?

• find the gaps between the sequences

  Hi all

  I have a request to find the gap between the sequences.

  Here's my table structure

  user_number | seq_number

  1            |   101

  1            |      102

  1            |    109

  1            |    110

  1            |    111

  2            |    201

  2            |    202

  2            |    203

  2            |    207

  2            |    208

  .            |    .

  .            |    .

  .            |    .

  .            |    .

  Now I have to find the gap between sequences, what I mean by gap's user_number 1 ' 6 between seq_number gap ' 102 'and 109'.

  Here's the query that I'm writing, but not giving the correct answer, he always gives the gap of 2:

  Select gap_start - gap_end gap

  de)

  Select a.seq_number + 1 as gap_start, b.seq_number - 1 as gap_end

  from my_table a, b from my_table

  where a.seq_number = b.seq_number

  and a.seq_number - (select c.seq_number

  from my_table c

  where c.seq_number = a.seq_number - 1) is set to null

  and a.user_number = '1'

  order of a.seq_number

  );

  Thank you.

  Hello

  Whenever you have a question, please post a small example of data (CREATE TABLE and only relevant columns, INSERT statements) for all of the tables involved and the accurate results you want from this data, so that people who want to help you can recreate the problem and test their ideas.

  Explain, using specific examples, how you get these results from these data.

  Always say what version of Oracle you are using (for example, 11.2.0.2.0).

  See the FAQ forum: Re: 2. How can I ask a question on the forums?

  Maybe you want something like this:

  WITH got_prev_seq_number AS

  (

  SELECT user_number, seq_number

  LAG (seq_numebr) OVER (PARTITION BY user_number

  ORDER BY seq_number

  ) AS prev_seq_number

  FROM my_table

  )

  SELECT user_number, seq_number, prev_seq_number

  OF got_prev_seq_number

  WHERE seq_number > prev_seq_number + 1

  ORDER BY user_number, seq_number

  ;

  .

• Gap in the sequence of the Archive

  Hello

  I have a Setup primary and physical the previous day. However, there seems to be a gap in my journal sequence archive, resulting the issue ORA-16724 Broker cannot solve gap

  I narrowed down it to 1 sequence archive is missing on my primary. I think that this may have arisen because the following command has been issued on the primary

  change the database clear no archived logfile Group 1;
  

  Q1. Is - what the reason for the gap of newspaper archive?

  I have no way to restore the missing log archiving (because it was never created in the first place because of the above command)

  Q2. How can I get my primary and Standby back in harmony? I'm not worried about the loss of data, I want to just the pair of primary / secondary working again

  I had no Flashback database enabled on the primary at the time loss of archive (I do now!)

  any help appreciated,

  Jim

  
  

  change the database clear no archived logfile Group 1;

  Q1. Is - what the reason for the gap of newspaper archive?

  I have no way to restore the missing log archiving (because it was never created in the first place because of the above command)

  Is it intentional or database was not able to check when issuing this command? whatever if you clear a log file that is necessary for recovery and then you cannot recover. Because the specific data in the redo log were not archived and thus caused archive GAP.

  Q2. How can I get my primary and Standby back in harmony? I'm not worried about the loss of data, I want to just the pair of primary / secondary working again

  I had no Flashback database enabled on the primary at the time loss of archive (I do now!)

  Still even if you have not enabled flashback database, you can synchronize primary and standby databases, check out this link to perform differentials rolls forward in sleep mode

  http://www.Oracle-CKPT.com/RMAN-incremental-backups-to-roll-forward-a-physical-standby-database-2/

  HTH.

• 70 d changed the sequence of 6 numbers... 5...

  Numbers of months old 70 d issued sequence OK in August 31 in the range 600 but September 2 (the next time I used the camera), the sequence changed to 5000 numbers. I manually changed the date from October, but the sequence numbers remained in the 5000 range while she probably had nothing to do with the month change. I did a RESET menu, took a picture and it was just the next number (5102) so some help. In both cases, there are a number of 100 and a dash preceding the sequence number. Any suggestions? Thank you

  BTW the FILE NUMBERING of the camera setting is CONTINUOUS

  Hello bob70D,

  The most likely guilty with something like that will be the card.  It is very likely that the camera is reading a file old numbering (maybe even another Canon EOS DSLR) and "pick up" where numbers fail.

  To test this and really to resolve this problem, you need to format the card.  Only that in the unit photo, and only once you have saved your photos.  All first, set up the file numbering camera manual reset and then put in shape.  It will bring everything back to 0001.  Then go back in the Menu and then return to file numbering and choose continuous this time.

• Finding and fixing of the sequences that are out of sync

  Oracle Database 11 g Enterprise Edition Release 11.2.0.2.0 - 64 bit Production version

  Hello

  Recently, our development database has been updated with production data, but have not been copied from the sequence.

  Then of course the sequence numbers are very badly synchronized with the primary key for tables throwing errors in primary key.

  How can I find the sequence names, names of tables, columns in primary key, and max values for the primary key columns that have values of key primary school max who are higher than the nextval of their corresponding sequences?

  So far the nextval of sequence numbers were all less than the max value for the primary key for the corresponding tables.

  We used the method:

  SELECT max (primary key column)

  TABLE;

  SELECT sequence_name.nextval FROM dual;

  Sequence_name ALTER SEQUENCE increment primary key value - current value of sequence max + 1;

  SELECT sequence_name.nextval FROM dual;

  SEQUENCE Sequence_name CHANGE INCREMENT OF 1;

  But this is done when a record is inserted into a table and the error is thrown.

  So I hope there is a much better way to remedy.

  Please leave me a question.

  Thank you

  Joe

  I don't know if this will help you or not, but here is what I used for the synchronization to the top of my sequences during the last upgrade/server database migration, I was involved with. You must be logged under the scheme that sequences need synchronization, linking of data back to the database, you are basing the sequences on and then let go and recreate sequences. It essentially creates a couple of other scripts and then executes them.

  CREATE DATABASE LINK dblink
  CONNECT to & schema
  IDENTIFIED BY "& password»
  USING ' & dbname';

  set pages 0;
  left head;
  Set feedback off;
  Set trimspool
  fixed line 1000;

  coil gen_seq_grants_spoolfile.sql

  Select 'grants'. privilege: ' on ' | table_name |' to ' | dealer | « ; »
  to user_sequences us,
  USER_TAB_PRIVS PAO
  where us.sequence_name = dtp.table_name;

  spool off;

  coil gen_seq_spoolfile.sql

  Select 'remove the sequence'. o.object_name | ';' | Chr (10) | Chr (10) |
  ' create the sequence ' | o.object_name | Chr (10) |
  "Start by ' | '. (to_number (s.last_number) + s.increment_by) | Chr (10) |
  "maxvalue ' | s.MAX_VALUE | Chr (10) |
  "minvalue ' | s.MIN_VALUE | Chr (10) |
  "nocycle | Chr (10) |
  'cache'. largest (s.cache_size, 20). Chr (10) |
  "all." Chr (10)
  of dba_objects@dblink o,.
  s dba_sequences@dblink,
  USER_SEQUENCES us
  where o.owner = user
  and o.object_name = s.sequence_name
  and o.owner = s.sequence_owner
  and s.sequence_name = us.sequence_name
  and o.object_type = 'SEQUENCE '.
  and us.last_number< s.last_number="" +="">
  order of o.object_name;

  spool off;

  Set of feedback

  @gen_seq_spoolfile.sql
  @gen_seq_grants_spoolfile.sql

  Drop database link dblink;

• Better to use the sequence of one or more?

  Hello
  
  I have several tables, each with its own primary key. I don't like what are the values of primary keys; they do not have to be sequential or anything. Should I set a separate sequence for each table, or just set a single sequence and reuse it for all tables? Is how important it? Thanks for your help.

  928546 wrote:
  Hello

  I have several tables, each with its own primary key. I don't like what are the values of primary keys; they do not have to be sequential or anything. Should I set a separate sequence for each table, or just set a single sequence and reuse it for all tables? Is how important it? Thanks for your help.

  His 'clean' to have a specific sequence for each table. If nothing else, it's how things are generally implemented and when others see your design are likely to expect. In practice, is not relevant.

  In addition, users can become unhappy when the sequence numbers are missing (which will ensure your suggested design). It matters little that they aren't really missing something, the numbers can make users think that documents are missing. It seems preferable to have consecutive sequence values in the tables (it can also tell you later if records have been deleted)

• Can any body help to get a script that can generate the sequence (length 3) with a combination of numbers and characters example: T11... TA1... TZ9... then on

  Can any body help to get a script that can generate the sequence (length 3) with a combination of numbers and characters example: T11... TA1... TZ9... then on

  With the help of the clause type

  Select sqnc

  from (select sqnc

  from (select 'T00"sqnc, '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ' ordr

  of the double

  )

  model

  size of (0 I)

  measures (sqnc, ordr, length (ordr) len)

  rules iterate (1300) until (instr(sqnc[iteration_number],'~')! = 0)

  (sqnc [iteration_number] = case when sqnc [cv (i) - 1] is null

  then sqnc [0]

  of another substr (sqnc [iteration_number - 1], 1, 1) |

  -case when substr (sqnc [iteration_number - 1], 2, 1)<=>

  so when business substr (sqnc [iteration_number - 1], 3, 1)<>

  then substr (ordr [0], instr (ordr [0], substr (sqnc [iteration_number - 1], 2, 1)), 1)

  of another nvl (substr (ordr [0], instr (ordr [0], substr (sqnc [iteration_number - 1], 2, 1)) + 1.1),'~ ')

  end

  end |

  -case when substr (sqnc [iteration_number - 1], 3, 1)<>

  then substr (ordr [0], instr (ordr [0], substr (sqnc [iteration_number - 1], 3, 1)) + 1.1)

  else ' 0'

  end

  end

  )

  )

  where instr(sqnc,'~') = 0

  Concerning

  Etbin

• Synchronization of four cameras with gaps in the timeline for multi cameras sequence

  I use Premiere Pro Trial CC to edit a multi camera concert. (The trial is just to see if the multi-came thing will work better than CS5) Since there is a limit of 30 minutes on four of my SLR, I have gaps in each of my deadlines of four cameras. All of these tracks were synchronized manually upward with a master audio track.

  In order to create a multi-cam sequence, I need to synchronize the video tracks 1-4, but so far have not been able to do. I tried to clips from each camera of nesting (so video 1-4 are all separate nested clips.)   I turn on the targeting of track for four channels of video and an audio track. Then I press 'I' to select a Point for the selected tracks. Not sure if this is how it works - just guess here.

  I then tries to 'Create Source Multi camera sequences' and tracks synchronization to aid 'In Points' on the nested five (4 video and 1 audio).   When I double click on the sequence of Source Multi camera to preview, I get four video windows appear, but the timing isn't right. It's as if they all were associated with at the beginning of the clip, not the markers that I put in front.

  So that's my problem. I can't synchronize these titles before creating a sequence of Source Multi cameras. I tried the synchronization of audio track, but it fails - too gaps to make it work, I think. I have no timecode. The only way I can think to do is to clip markers. Are some of these features disabled in the trial version?   Thanks for any help on this!

  MacBook Pro

  10.10.5

  Intel Core i7 2.8 GHz

  16 GB 1600 MHz DDR3

  NVIDIA GeForce GT 750M 2048 MB

  All of these tracks were synchronized manually upward with a master audio track.

  Then, with all your video tracks manually synchronize would with your audio master, you are ready. It would be a sequence with audio and 4 video layers. Now that nest, activate multi-cameras and turn on the multiple camera monitor in the program monitor and start your editing.

  --------------------------

  and if you want to try the other route-

  as for the creation of sequence of Source Multi cameras with points, place your points on your clips 4 source using the source monitor, you will only be able to get one on your audio files. That you establish for the created Premiere Pro sequence camera multiple source.

• Numbered lists to spoil the sequence of numbered titles.

  I created documents with securities bunch (i.e. 1, 2, 2.1, 2.1.1, 2.1.2, 2.2; etc.). I created the section numbering by using the Numbering tab in the paragraph Designer. Whenever I try to insert a numbered list in the document, however, re-sequence after the list numbers, and they do so without noticeable logical order. Anyone else see this issue before?

  You use a series label to maintain the flow of separate numbering? p. ex. H:.< =0=""> for Heading1, H:. < =0=""> for Title2, H:.. for titre3, etc.

• Find the missing numbers in a sequence

  Hello
  
  We have an ORDH table, which is having an ORDERNO field which starts from 300000. currently there are approximately 100 000 documents exist in this table.
  The ORDERNO value is generated from a sequence.
  We want to find missing persons (hole in the sequence) ORDERNO from the ORDH table.
  (Ex: 300654 is missing and there are many others also missing order numbers)
  Is it possible to find all the numbers missing command in this table?
  
  Thanks and greetings
  Murali

  Hi, Murali,

  This will show you the missing channels in numbers between existing numbers:

  WITH     got_next_orderno     AS
  (
       SELECT     orderno
       ,     LEAD (orderno) OVER (ORDER BY orderno)     AS next_orderno
       FROM     ordh
  )
  SELECT     ordrno + 1          AS from_no
  ,     next_orderno - 1     AS to_no
  FROM     got_next_orderno
  WHERE     orderno     + 1     != next_orderno
  ;
  

  I hope that answers your question.
  If not, post a small example of data (CREATE TABLE and INSERT statements) and the results desired from these data.

• Generate select 2 in the same statement consecutive sequence numbers

  Hello
  Could someone please tell me how to generate 2 consecutive sequence numbers in the same select statement.
  
  See you soon

  CREATE SEQUENCE my_seq
  INCREMENT BY 2
  /
  
    select nxt_value
          , nxt_value + 1
   from ( select my_seq.nextval nxt_value from dual )
  /
  

  Anton

• can see us line numbers next to each step in the sequence file?

  Hello

  I have a file of sequence having 600 steps. I would like to know is there any option to the test to set number for each step in the sequence of line editor so that it is useful for the review.

  Example:

  1 Action1

  2 Action2

  ............

  600 Action600

  Kind regards

  Krishna

  Krishna,

  If you want just to know the index of a step, this information is displayed at the bottom of the sequence editor in the status bar.  It shows you how many steps there are in the sequence, how you have selected and the index of the selected steps.

  

  It is also possible to display the information in the view of the steps in a column, if you are ready to create a new column.  Follow the instructions in this KB to see how to create a new column:changing the properties of columns in the viewport of execution TestStand sequence editor.

  One of the types of columns is Index. Just set your column of this type and you'll see step index as shown below.

  

  

• export the sequence with numbers of real images

  Hi all

  I made my activities all projects once in a complete png sequence!

  Now, I changed a small part and wanted to make this part in the folder with the sequence already made.

  PROBLEM is that it always starts with 'ZERO '. How can I say first to do it in real framenumbers?

  Or is there a nother workflow that is similar to this technique?

  Thanks to you all

  Michael

  Found a solution, because I don't know how to do this first:

  Rename the lot in the bridge.

  117 is a simple number that I selected for the first image.

  

• What is the problem with the sequences on RAC environments?

  Version: 10 g, 11G
  
  I've never worked on CARS. But I keep seeing discussions about the problems with the sequences on CCR environments. What exactly is the
  basic question?

  Can be performance issues if you have a large number of sequences of nocache as it may cause heavy IO for the system tablespace.

  Given that each instance will have its own cache seqeuence that some sites are unhappy with significant gaps in the values, this can cause.

  There was also a blocking problem caused by heavy simultaneous new connection activity requiring the issuance value audsid for the session of v$. To solve this just to the top of the cache size to 1,000 or 10,000 by default if you are on a version where the value was not moved upward by Oracle already.

  As far as the first two numbers go that my view is if the sequence does not need to be cached you need not use a sequence to generate value. If you need a value without interval then you need to get your value from a table column value that is part of the transaction and do not use a sequence in a first time.

  Sequences are designed for speed and concurrentcy, and this competition is priced at gaps.

  HTH - Mark D Powell.