The length of the BLOB data type.

Similar Questions

• problem with the blob data type

  Hello
  Hi just created a blob table data type and insert a text file of the directory - file "DG" and text contain text "Hello dba.
  
  CREATE TABLE blob_sample (id, NUMBER, blob_data BLOB);
  
  DECLARE
  l_bfile BFILE.
  l_blob BLOB;
  BEGIN
  INSERT INTO blob_sample (id, blob_data)
  VALUES (1, empty_blob())
  RETURN blob_data INTO l_blob;
  l_bfile: = BFILENAME ("'DG', ' hello.txt");
  DBMS_LOB. FileOpen (l_bfile, Dbms_Lob.File_Readonly);
  DBMS_LOB. LoadFromFile (l_blob, l_bfile, DBMS_LOB.getlength (l_bfile));
  DBMS_LOB. FileClose (l_bfile);
  COMMIT;
  END;
  /
  
  SQL > select * from blob_sample;
  ID BLOB_DATA
  1 68656C6C6F206462612773
  
  Above is coded image shape & I try this with the Insert as below... IT WORKS
  SQL > insert into blob_sample (id, blob_data) values (1, '68656C6C6F206462612773');
  
  1 line of creation.
  
  
  But this does not work when encoded length is too large (size 10 KB text file or more)
  
  It returns error
  
  insert into blob_sample (blob_data) values ('416374697
  *
  ERROR on line 1:
  ORA-01704: string literal too long
  
  
  Please HELP how how can I insert with this method
  
  Published by: Mr. singh on 9 October 2012 18:54
  
  Published by: Mr. singh on October 9, 2012 19:38

  It does not make sense to try to build a literal string that represents the binary data in a GIF file and that insert a BLOB using an INSERT... Statement of VALUES.

  You can use the first approach (dbms_lob.loadfromfile) to load a GIF file (or any file) into a BLOB.
  If the image you are trying to load is not a file on the filesystem of database, you can use SQL * Loader on the client machine to load the data, or you can write an application in any language you want that reads the data from the file and inserts it into the BLOB by using the API in your language / framework. You have not told us what language and framework you use, but it shouldn't be too hard to find a suitable example. For example, if you use Java and JDBC, here is an example of loading a GIF in a table.

  Justin

• What the best data type for storing jpeg/gif images?

  Hello
  What the best data type for storing jpeg/gif images?
  Idon't want to use the blob data type
  Ordimage is the best?
  Thank you.

  VDH says:

  What the best data type for storing jpeg/gif images?
  Idon't want to use the blob data type
  Ordimage is the best?

  Don't be stupid.

  If you do not want to use BLOBs then, or you can use the ordimage.

  It uses ordsys.ordsource for the storage of the image data type. This is a user defined Type of data in advance and has a property called LocalData that stores the actual image. And what is its data type? BLOB OBJECT.

• Largest number of digits for the NUMBER data type?

  What length more of a NUMBER that Oracle will "support"?

  The documentation says the following:

  Limitations of the data type says:

  «Can be represented in a comprehensive precision 38 digits»

  NUMBER of Data Types says:

  "Oracle guarantees portability of numbers with precision of up to 20 digits of base-100, which equals 39 or 40 decimal digits according to the position of the decimal point."

  I realize account that if I define a column as simply NUMBER, I can insert numbers with a size up to 126 characters.  However, Oracle seems to maintain only the first 40 digits in MOST cases.  The largest number of digits, it seems to allow is 40 before it begins to be replaced by 0.

  With numbers that have more than 40 figures, Oracle will sometimes replace all numbers according to the 38th numbers with a 0 and sometimes replace 0 after the digit 39th or 40th.

  Therefore, what is the largest number of digits, can be trusted to safely store Oracle?

  This is the code I used for this testing process.

  create the table max_num (num number);

  declare

  number of l_x;

  Start

  for x in 1.200

  loop

  l_x: = x;

  insert into max_num values (rpad (1, x, 1));

  end loop;

  exception

  while others then

  dbms_output.put_line ('STOP: ' | l_x);

  dbms_output.put_line (SQLERRM);

  end;

  /

  Select num, length (replace (num, 0)) of max_num;

  What length more of a NUMBER that Oracle will "support"?

  You have already given your own answer. If 'length': the maximum number of digits is written the doc gives you the answer:

  999... (38 9's) x 10 value maximum¹²⁵

  The 38/39/40, hereinafter referred to as the doc means "significant digits". This is why rounding or truncation occurs if you provide more significant digits of 38/39/40.

  Oracle stores the numbers internally in a binary format 21 bytes using a documented structure in the doc of the OIC in the section 'NUMBER'.

  http://docs.Oracle.com/CD/E11882_01/AppDev.112/e10646/oci03typ.htm#i423684

  Oracle database stores the values of the NUMBER data type in a variable length format. The first byte is the exponent and is followed by 1 to 20 mantissa bytes. The high bit of the exponent byte is the sign bit; It is defined for positive numbers, and it is cleared for negative numbers. The lower 7 bits represent the exponent, which is a number of base-100 with an offset of 65.

  This article from doc continues to show you how to convert the internal format to the real value.

  An additional byte of 1 is used for all types of data to store the length; That's why you often see docs saying numbers can take 22 bytes.

• Impact on performance when you use the LONG data type

  Hi all
  
  
  Only I have a doubt about the use of LONG data type
  
  I use the data type LONG for some columns in a table and I created indexes on the columns separately, but these column values can be easily fit into the varchar data type.
  
  (Just to see the performance on this issue)
  
  Suppose that a common select query with WHERE condition on any of the column which has LONG data type will affect the performance of the query?
  
  Please explain.
  
  Thank you

  (1) the LONG (and LONG RAW) data types have been depricated for quite a while. Oracle has been strongly recommends that you move to 8.1.5 CLOB and BLOB data types. Why you use the LONG data type? You're still on Oracle 7?

  (2) have you tried to write a query that has a WHERE condition that refers to a LONG column? In general, you can not because it does not support the type of data LONG. For example

  SQL> ed
  Wrote file afiedt.buf
  
    1  create table a (
    2    col1 varchar2(30),
    3    col2 long
    4* )
  SQL> /
  
  Table created.
  
  SQL> select * from a where col2='abc';
  select * from a where col2='abc'
                        *
  ERROR at line 1:
  ORA-00997: illegal use of LONG datatype
  

  LONG data types are a royal pain to work with. They also have implications on the performance of wicked on the client.

  Justin

• DLL for LabWindows/CVI 8.0 with the bool data type

  Hello

  I want to use a new SWIR camera in LabWindows/CVI 8.0 (Windows XP 32bits).

  The company delivered with the camera produced a 32-bit dll by using Microsoft Visual C++ 2010. The .dll and .lib and .h files include a working SDK/API (some functions with the bool data type)

  Compilation-online syntax error, variable Boolean is not a data type in LabWindows/CVI 8.0

  Generate the import of DLL-online syntax error library

  I tried to convert bool char (typedef unsigned char bool => no more syntax error but the functions does not work.)

  What can I do?

  Martin

  Hello again, Naumann!

  Microsoft Visual C++ 2010 represents Boolean using 1 byte, as stated by MSDN: https://msdn.microsoft.com/en-us/library/tf4dy80a(v=vs.100).aspx

  I guess that you import C++ functions using the syntax for extern "C". Otherwise, because of the C++ name mangling wouldn't you able to bind C++ library against your code CVI.

  You can also specify how you import C++ functions?

  In addition, because you have not described the problem as a corruption of heads or runtime error, I guess the C++ library function is called correctly the CVI. That said, I tend to believe that the problem is not really in the mechanism of interaction of C/C++, but in the C++ library. If you would start calling a dummy C++ function returning an integer from a simple CVI application that should work, because redefine bool in CVI 1 byte must ensure that settings are correctly transferred onto the stack.

  If you need to create a wrapper function of C++ that is not using bool and calls the C++ function, I expect to return the same result.

  Maybe you are missing a few prior initialization steps required? The provider of the camera also comes all example code?

  Best regards!

  -Johannes

• As an operator with the long data type

  Oracle 10g.

  Hi gurus

  I want to apply as an operator on the long data type, but I get the error message, can you please help me why is that I use as an operator with the long data type. I did some research and but unable to find a solution, see query for more details below...

  Query

  SELECT trigger_body FROM user_triggers

  WHERE trigger_body LIKE '% UPDA % CASE % ';

  Error

  ORA-00932: inconsistent data types: expected NUMBER got LONG

  00932 00000 - ' incompatible data types: wait %s %s got. "

  * Cause:

  * Action:

  Error on line: column 2: 7

  Concerning

  Muzz

  Adrian Billington wrote to the top of your options.

  working with long columns

• Syntex to create the table with the long data type

  I'm looking to create a table based on another table that having the column long data type. Throw the error ORA-00997: illegal use of the LONG data type

  
  I tired it

  create table abc_long (ag bgd long number);

  create table abc_long_dummy as ( ) Select *of abc_long); - ORA-00997 error: illegal use of the LONG data type

  How to get there?

  I'm looking to create a table based on another table that having the column long data type.

  You really don't want to do that.

  LONG data type has been deprecated for some time now, use CLOB.

  The TO_LOB() function will do the conversion on the fly:

  create table abc_long_dummy
  as
  select ag
       , to_lob(bgd) as bgd
  from abc_long ;
  

• Error (21,100): PL/SQL: ORA-00997: illegal use of the LONG data type

  CREATE or REPLACE (name in varchar2) procedure Compress_tab_partition
  is
  last_mnth_var varchar2 (8);
  curr_mnth_var varchar2 (8);
  number of last_mnth;
  number of curr_mnth;
  last_partition varchar2 (8);
  high_val varchar2 (4000);
  Start

  Select to_char (add_months (trunc (sysdate, 'MM'),-1), 'YYYYMM') | ' 00' in the double last_mnth_var;
  Select to_char (sysdate, 'YYYY') | TO_CHAR (sysdate, 'mm') | ' 00' in the double curr_mnth_var;
  Select to_number (last_mnth_var) in the double last_mnth;
  Select to_number (curr_mnth_var) in the double curr_mnth;

  Dbms_output.put_line ('Compression of GOLDMGR Table scores.' | table-name |) "to go". ») ;
  Dbms_output.put_line(' ');

  / * Step 1 - identify the name of the partition of the specified table must be compressed * /.
  Select high_value from high_val from user_tab_partitions where table_name = table-name;
  Select nom_partition into last_partition from user_tab_partitions where table_name = table-name and high_value = rtrim (high_val);

  / * Step 2 - Alter partition table to compress * /.

  run immediately "ALTER TABLE GOLDMGR." | table_name | ' CHANGE THE PARTITION '. last_partition | "COMPRESS by low query";

  / * Step 3 - Index rebuild step * /.

  I'm in (select index_name in user_indexes where table_name = table-name)
  loop
  run immediately "ALTER INDEX GOLDMGR." | i.index_name |' REBUILD ";
  end loop;

  Dbms_output.put_line (' COMPLETED: compress the Table partitions change.) ") ;

  end;
  /

  I'm getting an error like: Error (21,100): PL/SQL: ORA-00997: illegal use of the LONG data type

  Please resolve.

  HIGH_VALUE datatype is LONG. You may not use for a long TIME in WHERE clause expressions. You need to loop through the partitions by selecting HIGH_VALUE and then comparing. Secondly, there is no need to select double to calculate expressions. For example:

  Select to_char (add_months (trunc (sysdate, 'MM'),-1), 'YYYYMM') | ' 00' in the double last_mnth_var;

  should be replaced by

  last_mnth_var: = to_char (add_months (trunc (sysdate, 'MM'),-1), 'YYYYMM') | ' 00'.

  and there is no need to add_months here:

  last_mnth_var: = to_char (trunc (sysdate, 'MM') - 1, "YYYYMM"). ' 00'.

  But the main question is simply ALTER TABLE MODIFY PARTITION COMPRESS allows compression but does not compress. You must issue ALTER TABLE MOVE PARTITION COMPRESS:

  SQL > create table tbl (n) partition by range (n)
  2 (partition p1 values less than (maxvalue))
  3. Select lpad('X',4000,'X') from dual connect by level<=>
  4.

  Table created.

  SQL > select bytes
  2 from WHERE user_segments
  3 where nom_segment = 'TBL '.
  4 and nom_partition = 'P1 '.
  5.

  BYTES
  ----------
  830472192

  SQL > alter table tbl
  2. change the partition p1 compress
  3.

  Modified table.

  SQL > select bytes
  2 from WHERE user_segments
  3 where nom_segment = 'TBL '.
  4 and nom_partition = 'P1 '.
  5.

  BYTES
  ----------
  830472192

  SQL > alter table tbl
  2. move the partition p1 compress
  3.

  Modified table.

  SQL > select bytes
  2 from WHERE user_segments
  3 where nom_segment = 'TBL '.
  4 and nom_partition = 'P1 '.
  5.

  BYTES
  ----------
  8388608

  SQL >

  SY.

• ORA-00997: illegal use of the LONG data type

  Hi all

  11.2.0.1

  ALTER TABLE SAFDB MOVE TABLESPACE DATA_TS_ENC

  *

  ERROR on line 1:

  ORA-00997: illegal use of the LONG data type

  Why illegal? How can I move this table?

  Thank you very much

  pK

  Take a look who

  http://aprakash.WordPress.com/2011/01/06/how-to-move-table-containing-long-or-LOB-columns/

  Concerning

• Insert/update the column with the clob data type

  Hi all

  ORCL Version: 11g.

  I have a table with the clob data type.

  Test12

  (col1 clob);

  I'm trying to insert/update to update the column with more than 4000 characters.

  But due to the limitation of tank 4000, I could not Insert/Update.

  Need your help in resolving this issue.

  THX

  Rod.

  The limit of 4000 characters is incorrect.  That pertains only to the varchar2 data type.  A clob can hold more than 4 G.

  Here is an example that shows how to insert it, I found...

  Otherwise, here is a way 'dirty' to do.

  insert into your_table (COLA, COLB)

  values

  (PRIMARY_KEY, PART 1 OF DATA)

  ;

  Update your_table

  Define COLB = COLB | PART 2 OF BIG DATA

  where COLA = PRIMARY_KEY;

  Update your_table

  Define COLB = COLB | PART 3 OF BIG DATA

  where COLA = PRIMARY_KEY;

  .. and so on...

  I don't know that I personally recommend the second style...  But he could do the job.

• Where we can find the attachment data type short text

  Hello

  file type attachments are store at fnd_lob.

  Where we can find the attachment data type short text in oracle apps.

  Concerning

  Hello

  Thanks, that's useful.

• How to use the LOB data type?

  I can't create a table with the LOB data type.

  Do I need an additional parameter in sys.odbc.ini?

  My dsn information is

  [tpch]

  Driver=/home/TimesTen/TimesTen/tt1121/lib/libtten.so

  Data store = / home/timesten/TimesTen/tt1121/tpch/tpch

  LogDir = / home/timesten/TimesTen/tt1121/tpch/logs

  PermSize = 4096

  TempSize = 2048

  PLSQL = 1

  LOB = 1

  DatabaseCharacterSet = US7ASCII

  -bash-4, $ 1 ttdaemonadmin-version

  TimesTen Release 11.2.1.2.0

  There is no LOB = 1 attribute; Please, delete it from your definition ODBC to avoid potential errors.

  LOB support has been added in the major version 11.2.2 TimesTen. So you use 11.2.1 LOB is not available. If you want to use LOB data, then you must upgrade to 11.2.2.

  Chris

• XMLTable: definition of the columns data type of table

  Hello world
  
  I am using ORACLE 11 g and you want to shred XML into a table called test used. I was hoping I'd be able to get the types of data to the employees table existing instead of specify them in the clause of columns. Is this possible?
  
  Here is an example of what I'm trying to do. But I get an error: PL/SQL: ORA-00907: lack the right parenthesis on the line starting with columns.
  

      insert into EMPLOYEES
       select *
         from xmltable(
         '/employees/employee'
          passing EMP_XML
  
          columns FIRST_NAME EMPLOYEES.FIRST_NAME%TYPE path 'first_name',
                  LAST_NAME  EMPLOYEES.LAST_NAME%TYPE  path 'last_name',
                  GENDER     EMPLOYEES.GENDER%TYPE     path 'gender',
                  AGE        EMPLOYEES.AGE%TYPE        path 'age'
          );

  Error details

          columns FIRST_NAME EMPLOYEES.FIRST_NAME%TYPE path 'first_name',
                              *          
  
  ERROR at line 16:
  ORA-06550: line 16, column 42:
  PL/SQL: ORA-00907: missing right parenthesis
  ORA-06550: line 11, column 5:
  PL/SQL: SQL Statement ignored

  Thank you.

  Specification of column names is required, but you can omit the declaration of data types.

  See: the function XMLTABLE SQL/XML in Oracle XML DB

  XMLTable is used with storage XML based on a schema of XMLType data type is optional. If absent, the data type is inferred from the XML schema. If Oracle > XML DB is unable to determine the right type of a node, a default type VARCHAR2 (4000) is used.

  It is an Oracle extension; in the SQL/XML standard, the data type is always required.

  Note:
  The alleged data type might change as a result of the application of a patch or upgrade of Oracle XML DB. In particular, a new set of release or patch might be able to > determine the data type when the previous version was unable to do so (and therefore not reimbursed to VARCHAR2 (4000)). To protect against such an eventuality, specify an explicit data type with the data type.

• ORA-02327: cannot create indexes on the LOB data type expression

  DB 10.2.0.4
  DB 5.2
  
  I am not able to move lobindex and lobsegment. While try occurs below error
  
  SQL > ALTER INDEX dev. "" SYS_IL0000718396C00002$ $"REBUILD THE TABLESPACE DATA_TEMP;
  ALTER INDEX dev. "" SYS_IL0000718396C00002$ $"REBUILD TABLESPACE DATA_TEMP
  *
  ERROR on line 1:
  ORA-02327: cannot create indexes on the LOB data type expression
  
  Thank you
  
  Published by: user13382934 on October 16, 2012 14:05

  correct syntax is
  ALTER TABLE.

  MOVE the LOB ()
  STORE AS (tablespace );

  Where is a name of the / columns LOB, not the name of the segment. Moving type LOB data will move its indexes as well.