Similar Questions

• 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

• not enough memory. What is the most affordable to increase memory

  What is the most affordable to increase memory

  Try increasing the size of virtual memory (it's free), as shown here: http://windows.microsoft.com/en-CA/windows-vista/Change-the-size-of-virtual-memory

  Virtual memory is slower, but if you do not use your PC to play or run programs like photoshop, you won't notice this fact.

• What is the performance of the ODI Tweak we can do

  Hi guru,.
  
  What are the performance improvement we can do?
  
  
  as if a single interface takes a lot of time which parameter to check and what we can do to get better performance
  
  
  and all in all what we can do to improve the performance of ODI?

  Hello

  There is no setting of ODI which really, you can change to increase the overall performance (otherwise it would be enabled by default). So it really depends on your needs.

  Most of the work is not made by ODI itself but by your underlying DB. ODI is an ELT and not an ETL.
  While Chantal said, the best thing to do is to check the generated code and change your interface or your if necessary KM.

  For example if you think you need to run his stats, you can do something like this: http://www.business-intelligence-quotient.com/?p=1754
  You can also disable the index before the integration steps and rebuild afterwards.

  It will be useful.

  Kind regards
  JeromeFr

• 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.

• What is the release date for Streets and Trips 2012/2013?

  What is the release date for Streets and Trips 2012/2013?

  Information about future product releases are usually announced through press conferences and other media.
  You can continue to monitor the Streets and Trips here site: http://www.microsoft.com/streets/en-us/default.aspx

• What is the difference between variable presentation and application of OBIEE 11 g

  What is the difference between variable presentation and application of OBIEE 11 g

  Hello

  presentation and application of variable responses only but fluctuating demand can temporarily ignore the presentation and the session variable has nothing to do with the variables of repository.

  Everything what Oracle

  Thank you

  Prasanna

• 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

• 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

• How to extract data using the xml data type

  Hello
  I tried the following example using the xml data type, but not the desired output.
  could you please correct the query in order to obtain the necessary
  

  CREATE TABLE TEST.EMP_DETAIL
  (
    EMPNO       NUMBER,
    ENAME       VARCHAR2(32 BYTE),
    EMPDETAILS  SYS.XMLTYPE
  )

  Insert into EMP_DETAIL
     (EMPNO, ENAME, EMPDETAILS)
   Values
     (7, 'Martin', XMLTYPE('<Dept>
    <Emp Empid="1">
      <EmpName>Kevin</EmpName>
      <Empno>50</Empno>
      <DOJ>20092008</DOJ>
      <Grade>E3</Grade>
      <Sal>3000</Sal>
    </Emp>
    <Emp Empid="2">
      <EmpName>Coster</EmpName>
      <Empno>60</Empno>
      <DOJ>01092008</DOJ>
      <Grade>E1</Grade>
      <Sal>1000</Sal>
    </Emp>
    <Emp Empid="3">
      <EmpName>Samuel</EmpName>
      <Empno>70</Empno>
      <DOJ>10052008</DOJ>
      <Grade>E2</Grade>
      <Sal>2530</Sal>
    </Emp>
    <Emp Empid="4">
      <EmpName>Dev</EmpName>
      <Empno>80</Empno>
      <DOJ>10032007</DOJ>
      <Grade>E2</Grade>
      <Sal>1200</Sal>
    </Emp>
  </Dept>
  '));

  I need to get the record for Empid = '2'
  Then tried the following query with no expected o/p

  SELECT a.empno,a.ename,a.empdetails.extract('//Dept/Emp/EmpName/text()').getStringVal() AS "EmpNAME",
       a.empdetails.extract('//Dept/Emp/Empno/text()').getStringVal() AS "EMPNumber",
        a.empdetails.extract('//Dept/Emp/DOJ/text()').getStringVal() AS "DOJ",
        a.empdetails.extract('//Dept/Emp/Grade/text()').getStringVal() AS "Grade",
        a.empdetails.extract('//Dept/Emp/Sal/text()').getStringVal() AS "Salary",
        a.empdetails.extract('//Dept/Emp[@Empid="2"]').getStringVal() AS "ID",
        a.empdetails.extract('//Dept/Emp[EmpName="Coster"]').getStringVal() AS "CHK"
       FROM emp_detail a 
       where empno=7  
             AND a.empdetails.existsNode('//Dept/Emp[@Empid="2"]') =1

  Thank you...

  Karthick_Arp wrote:
  I'm not very good at that... But if your XML code should not be more like this

  SQL> Insert into EMP_DETAIL
  2     (EMPNO, ENAME, EMPDETAILS)
  3   Values
  4     (7, 'Martin', XMLTYPE('
  5    
  6      1
  7      Kevin
  8      50
  9      20092008
  10      E3
  11      3000
  12    
  .. cut ..
  

  Why? It is perfectly valid to data as attributes rather than elements and also quite common for key values.

• Using DBMS_DATAPUMP with the LONG data type

  I have a procedure below that calls the DBMS_DATAPUMP procedure using a REMOTE_LINK move a schema of one database to another. However, some tables in this schema have columns with the data type of LONG. And when I run it I get an error saying that you cannot move the data with the LONG data type using a REMOTE CONNECTION. So no data in these specific tables gets flying over.
  
  Does anyone else have this problem? If so, do you have a work around? I tried to add a CLOB column in my table and affecting the new CLOB equal THROUGHOUT, but I couldn't get that to not work either... even when I tried to use a TO_LOB. If I could get that pass, then I could just slide ALONG, the schema, and then re-create the LONG column on the opposite side.
  
  Here is my procedure...
  
  
  
  DECLARE
  / * IMPORT/EXPORT VARIABLES * /.
  v_dp_job_handle NUMBER;          -The handful of job data pump
  v_count NUMBER;          -Index of the loop
  v_percent_done NUMBER;          -Percentage of job complete
  v_job_state VARCHAR2 (30);     -To keep track of job status
  v_message KU$ _LOGENTRY;     -For error messages and work in PROGRESS
  v_job_status KU$ _JOBSTATUS;     -The State of the work of get_status
  v_status KU$ _STATUS;     -The status returned by get_status object
  v_logfile NUMBER;
  T_DATE VARCHAR2 (13).
  v_source_server_name VARCHAR2 (50);
  v_destination_server_name VARCHAR2 (50);
  
  BEGIN
  v_project: = 'TEST ';
  T_DATE: = TO_CHAR (SYSDATE, 'MMDDYYYY_HHMI');
  v_source_server_name: = 'TEST_DB ';
  
  v_dp_job_handle: = DBMS_DATAPUMP. OPEN)
  OPERATION = > "IMPORT."
  JOB_MODE = > "SCHEMA."
  REMOTE_LINK = > v_source_server_name,
  JOB_NAME = > v_project | ' _EXP_' | T_DATE,
  VERSION = > 'LAST');
  
  v_logfile: = DBMS_DATAPUMP. KU$ _FILE_TYPE_LOG_FILE;
  
  DBMS_DATAPUMP. ADD_FILE)
  MANAGE = > v_dp_job_handle,
  FILENAME = > v_project | ' _EXP_' | T_DATE |'. JOURNAL '.
  DIRECTORY = > 'DATAPUMP. "
  FILETYPE = > v_logfile);
  
  DBMS_DATAPUMP. () METADATA_FILTER
  MANAGE = > v_dp_job_handle,
  NAME = > 'SCHEMA_EXPR ',.
  VALUE = > ' = "' | v_project | " ' ') ;
  
  DBMS_DATAPUMP. START_JOB (v_dp_job_handle);
  
  v_percent_done: = 0;
  v_job_state: = "UNDEFINED";
  
  WHILE (v_job_state! = "COMPLETED") AND (v_job_state! = "STOPPED")
  LOOP
  DBMS_DATAPUMP. GET_STATUS)
  v_dp_job_handle,
  DBMS_DATAPUMP. KU$ _STATUS_JOB_ERROR + DBMS_DATAPUMP. KU$ _STATUS_JOB_STATUS + DBMS_DATAPUMP. KU$ _STATUS_WIP.
  -1,
  v_job_state,
  v_status);
  
  v_job_status: = v_status. JOB_STATUS;
  
  IF v_job_status. PERCENT_DONE! = v_percent_done THEN
  DBMS_OUTPUT. Put_line ('* percent of the job done = ' |) To_char (v_job_status. PERCENT_DONE));
  v_percent_done: = v_job_status. PERCENT_DONE;
  END IF;
  
  IF BITAND (v_status. MASK, DBMS_DATAPUMP. KU$ _STATUS_WIP)! = 0 THEN
  v_message: = v_status. WORK IN PROGRESS;
  ELSIF BITAND (v_status.mask, DBMS_DATAPUMP. KU$ _STATUS_JOB_ERROR)! = 0 THEN
  v_message: = v_status. ERROR;
  ON THE OTHER
  v_message: = NULL;
  END IF;
  
  IF v_message IS NOT NULL THEN
  v_count: = v_message. FIRST;
  While v_count IS NOT NULL
  LOOP
  DBMS_OUTPUT. Put_line (v_message (v_count). LOGTEXT);
  v_count: = v_message. Next (v_count);
  END LOOP;
  END IF;
  END LOOP;
  
  DBMS_OUTPUT. Put_line ("' job has completed");
  DBMS_OUTPUT. Put_line (' State of the Final work = ' | v_job_state);
  
  DBMS_DATAPUMP. Detach (v_dp_job_handle);
  END;

  TO_LOB can be used to insert, create table in select and update the instructions to convert

  So: You simply cannot use it in SELECT..., you can use CREATE TABLE BLAH AS SELECT TO_LOB (LONG_COLUMN) OF DREADED_TABLE_WITH_LONG_COL;

• 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

• 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.

• 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.