How to find Tuple(row) size in a Data Block

hi,
I want to find out the size of 1 row and total size of a table in a data block in Oracle 11g. For Example I've a Employee table with 300 rows. I want to find out how much space these rows are occupying in a data block (8192 default) and also the size of 1 individual row.
I'll appreciate the valuable suggestions.
Thanks alot.
Regards,
Kamran

Hi,
Welcome to the forum!
See [Calculating Oracle average row length|http://www.dba-oracle.com/t_average_row_length.htm], I hope it helps
Regards,

Similar Messages

How to estimate average row size without populating data

hi all
I have a work of estimating the average row size of some tables. Because I don't want to populate these tables with data(It's alot work to do it),so I am not able to get the arerage row size from dba_tables by analyzing these tables.
Is there other way around to do my job easily?
Thanks alot.

Hi,
I am not a coder,I am a DBA.Do you think that it's coder's responsibility to do such kind of works?Still i think it part of the dba role to suppport the developers or to provide guidance, the easiet way would be the using package DBMs_SPACE, perhaps if you take the help of developer, ask him to populate the single record with full length or say max length in each table and generate the 10053 trace with basic select clauses, You can the information from the trace too...
- Pavan Kumar N

How to find the db size

Hi ,
Please tell me how to find the db size.
Thanks,
Kumar.

If I understand correctly, the above query will give the space allocated to the database. This isn't necessarily the same as the space used by the database. Or do I need to clean my glasses ?
I use the following to get sizes for tablespaces (may need some formatting done - works in 9i and 10g) :
SELECT
     Total.name "TABLESPACE_NAME",
     total_space "TABLESPACE_SIZE",
     nvl(Free_space, 0) Free_space,
     nvl(total_space-Free_space, 0) Used_space
FROM
     select
          tablespace_name,
          sum(bytes/1024/1024) Free_Space
     from
          sys.dba_free_space
     group by
          tablespace_name
     ) Free,
     select
          b.name,
          sum(bytes/1024/1024) TOTAL_SPACE
     from
          sys.v_$datafile a,
          sys.v_$tablespace B
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          a.ts# = b.ts#
     group by
          b.name
     ) Total
WHERE
     Free.Tablespace_name(+) = Total.name
ORDER BY
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How to find the Model size in Semantics

Hi All,
Please can you tell me how to find the model size in Semantics.
Thanks,
Indu

Hi,
Instead of looking up the ID for the Entailment in DB_VIEWS you can better use MDSYS.SEM_NETWORK_INDEX_INFO
For example:
select name, type, id from MDSYS.SEM_NETWORK_INDEX_INFO;
NAME TYPE ID
MYMODEL MODEL 60
MYMODEL_INF ENTAILMENT 69
*** Space about the B-tree indexes on models and entailments ***
Indexes created in RDF_LINK$ for a specific model:
SQL> select name, type, id, index_name from MDSYS.SEM_NETWORK_INDEX_INFO;
NAME TYPE ID INDEX_NAME
MYMODEL MODEL 60 RDF_LNK_PCSGM_IDX
FAMILY100 MODEL 59 RDF_LNK_PSCGM_IDX
FAMILY100 MODEL 59 RDF_LNK_PCSGM_IDX
FAMILY2 MODEL 56 RDF_LNK_PCSGM_IDX
FAMILY2 MODEL 56 RDF_LNK_PSCGM_IDX
FAMILY MODEL 57 RDF_LNK_PCSGM_IDX
FAMILY MODEL 57 RDF_LNK_PSCGM_IDX
OTHERMODEL MODEL 58 RDF_LNK_PSCGM_IDX
OTHERMODEL MODEL 58 RDF_LNK_PCSGM_IDX
0 NETWORK 0 RDF_LNK_PCSGM_IDX
0 NETWORK 0 RDF_LNK_PSCGM_IDX
MYMODEL_INF ENTAILMENT 69 RDF_LNK_PCSGM_IDX
MYMODEL_INF ENTAILMENT 69 RDF_LNK_PSCGM_IDX
Then get the size from DBA_SEGMENTS
select bytes/1024/1024 MB, partition_name from dba_segments where segment_name in ('RDF_LNK_PSCGM_IDX','RDF_LNK_PCSGM_IDX');
Specifically for our model 60 and Entailment 69:
select bytes/1024/1024 MB, partition_name from dba_segments where segment_name in ('RDF_LNK_PSCGM_IDX','RDF_LNK_PCSGM_IDX') and partition_name in ('MODEL_60','MODEL_69');
MB PARTITION_NAME
192 MODEL_60
192 MODEL_60
60.0625 MODEL_69
62.375 MODEL_69
You would add them all for the size of the indexes

How to find Average transaction size and average number of transactions/sec

Would like to know
1. how to find average transaction size
2. number of transactions per sec
using SQL queries. We also have statspack installed.
Regards,
Anirban

SQL> select maxval,minval,average from SYS.V_$SYSMETRIC_SUMMARY where metric_name in ('User Transaction Per Sec');
MAXVAL MINVAL AVERAGE
.7 0 .149170735
SYS.V_$SYSMETRIC_SUMMARY have to many other metrics check the one you need. (10G and above)
Coskan Gundogar
http://coskan.wordpress.com
Edited by: coskan on Mar 31, 2009 12:42 PM

How to find out the size of files transferred over the SQL * Net?

I am trying to test the Advanced Compress (AC) for 11g Data Guard. When the AC is turned on, the archived log files are supposed to be compressed on the primary database server and sent over SQL*Net, then decompressed on the standby db server. We will see the file sizes are the same on both primary and standby servers. I want to verify that the AC works by monitoring how much data are sent over SQL*Net. Per Oracle, AC uses 35% less of the bandwith. That means the size of the files transferred should be at least 65% of the original size.
Is there a way to find out the size through Oracle utilities? If not, how to find out by OS utilities? OS is Solaris 5.10.
Thanks.

I'm not sure this can be done via SQL*Net, but a network packet sniffer between the two servers should be able to help - you might want to contact your network team.
HTH
Srini

Urgent: How to find out the size in bytes of java object

Hi Experts,
We've a requirement that we need to find out the size of a java object at run time, is there a direct java API to get the size of a composite object in memory?
Here is my requirement: We are adding string objects (which is an xml string of considerable size) into a List. After reaching certain size limit (lets say 5MB) of the list i need to put this data into DB as a CLOB. So every time I add a string object to the list, I need to see if the total size of the list exceeds the limit and if yes, flush the results into DB.
I am not sure if java has a direct API for this, if not what is the beast way to do it, it s critical requirement for us.
It would be really great if someone could help us out.
Thank you,
-Shibu.

>
We've a requirement that we need to find out the size of a java object at run time, is there a direct java API to get the size of a composite object in memory?
Here is my requirement: We are adding string objects (which is an xml string of considerable size) into a List. After reaching certain size limit (lets say 5MB) of the list i need to put this data into DB as a CLOB. So every time I add a string object to the list, I need to see if the total size of the list exceeds the limit and if yes, flush the results into DB.
I am not sure if java has a direct API for this, if not what is the beast way to do it, it s critical requirement for us.
It would be really great if someone could help us out.
>
Could you explain your actual requirement a little more fully.
1. Is each individual string a separate XML string? Or is it just a fragment? Why would you just concatenate them together into a CLOB? That won't produce valid XML and it won't let you easily separate the pieces again later. So provide a simple example showing some strings and how you need to manipulate them.
2. Are you using these xml strings in Java at all? Or are you just loading them into the database?
For example if you are just loading them into the database you don't need to create a list. Just create a CLOB in Java and append each string to the CLOB. Before you append each one you can check to see if the new string will put you over your length limit. If it will then you write the CLOB to the database, empty the CLOB and start appending again to the new clob instance.
If you explain what you are really trying to do we might be able to suggest some better ways to do it.

How to find the client size?

i want to know how to find the size of the client?

Hi Gadangi,
Check OSS note# "118823 - CC-ADMIN: Size of a client".
Best regards,
Orkun Gedik

How to find the Schema size

Hi,
How to find the size of the schema in a daabase.
Thanks,
Mahi

Mahi,
One more option, though not so clean would be use Data Pump and its estimate file size option for the schema. The estimate would tell you the info about the size of the schema.
HTH
Aman....

How to find duplicate row in sql query?

Hi All,
Please solve my query, find duplicate row and how to count its. your suggestion would be greatly appreciated.

You can use group by and having.
SQL> WITH t
2       AS (SELECT       LEVEL id
3                 FROM   DUAL
4           CONNECT BY   LEVEL <= 5
5           UNION ALL
6           SELECT       LEVEL + 2
7                 FROM   DUAL
8           CONNECT BY   LEVEL <= 3)
9 SELECT   *
10    FROM   t;
        ID
         1
         2
         3
         4
         5
         3
         4
         5
8 rows selected.
SQL> WITH t
2       AS (SELECT       LEVEL id
3                 FROM   DUAL
4           CONNECT BY   LEVEL <= 5
5           UNION ALL
6           SELECT       LEVEL + 2
7                 FROM   DUAL
8           CONNECT BY   LEVEL <= 3)
9 SELECT     id, COUNT (*)
10      FROM   t
11 GROUP BY   id
12    HAVING   COUNT (*) > 1;
        ID   COUNT(*)
         3          2
         4          2
         5          2
SQL>

How to find out image size (in pixels) of jpg and gif files

this seems to work, though i doubt that it would very time:
               Image img = Toolkit.getDefaultToolkit().getImage("car.jpg");
               int w = img.getWidth(null);
               int h = img.getHeight(null);
               while(w <= 0 || h <= 0)
                  try{Thread.sleep(10);}catch(InterruptedException ix){}
                  w = img.getWidth(null);
                  h = img.getHeight(null);
               JOptionPane.showMessageDialog
                  null,
                  filenames[i] + ": " + w + "x" + h,
                  "ImgSize",
                  JOptionPane.INFORMATION_MESSAGE
               );please suggest a better solution.
thanks

>
We've a requirement that we need to find out the size of a java object at run time, is there a direct java API to get the size of a composite object in memory?
Here is my requirement: We are adding string objects (which is an xml string of considerable size) into a List. After reaching certain size limit (lets say 5MB) of the list i need to put this data into DB as a CLOB. So every time I add a string object to the list, I need to see if the total size of the list exceeds the limit and if yes, flush the results into DB.
I am not sure if java has a direct API for this, if not what is the beast way to do it, it s critical requirement for us.
It would be really great if someone could help us out.
>
Could you explain your actual requirement a little more fully.
1. Is each individual string a separate XML string? Or is it just a fragment? Why would you just concatenate them together into a CLOB? That won't produce valid XML and it won't let you easily separate the pieces again later. So provide a simple example showing some strings and how you need to manipulate them.
2. Are you using these xml strings in Java at all? Or are you just loading them into the database?
For example if you are just loading them into the database you don't need to create a list. Just create a CLOB in Java and append each string to the CLOB. Before you append each one you can check to see if the new string will put you over your length limit. If it will then you write the CLOB to the database, empty the CLOB and start appending again to the new clob instance.
If you explain what you are really trying to do we might be able to suggest some better ways to do it.

How to find selected rows in REUSE_ALV_GRID_DISPLAY

HEllo All,
In OO we have a method to find get_selected_rows but i am unable to what is the way to find selected rows in REUSE_ALV_GRID_DISPLAY.
I am able to find a single row but i have to find multiple cleans in ALV. How can i do this.
Please help me with some ideas or please post some sample codes.
Regards,
Lisa

Hi,
Check this code..
REPORT zdayatest1.
TABLES :t247.
TYPE-POOLS slis. "Type definitions for alv report
TYPES: BEGIN OF ty_func_tab,
        fcode    TYPE rsmpe-func,
        END OF ty_func_tab.
DATA: it_fieldcat TYPE lvc_t_fcat,
      wa_fieldcat TYPE lvc_s_fcat.
DATA: is_lvc_s_glay TYPE lvc_s_glay.
DATA: wa_layout TYPE lvc_s_layo.
DATA: is_rxtab TYPE ty_func_tab.
DATA: BEGIN OF it_final OCCURS 0,
      check(1),
      mnr LIKE t247-mnr,
      ltx LIKE t247-ltx,
      END OF it_final.
DATA: wa_final LIKE it_final.
DATA: w_repid LIKE sy-repid.
START-OF-SELECTION.
w_repid = sy-repid.
REFRESH it_final.
SELECT mnr ltx
FROM t247
INTO CORRESPONDING FIELDS OF TABLE it_final
WHERE spras EQ 'E'.
wa_fieldcat-fieldname = 'CHECK'.
wa_fieldcat-tabname   = 'IT_FINAL'.
wa_fieldcat-checkbox = 'X'.
wa_fieldcat-edit      = 'X'.
wa_fieldcat-outputlen = '3'.
wa_fieldcat-col_pos   = '1'.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'MNR'.
wa_fieldcat-tabname    = 'IT_FINAL'.
wa_fieldcat-outputlen = '8'.
wa_fieldcat-col_pos    = '2'.
wa_fieldcat-coltext = 'Month'.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'LTX'.
wa_fieldcat-tabname    = 'IT_FINAL'.
wa_fieldcat-outputlen = '20'.
wa_fieldcat-col_pos    = '3'.
wa_fieldcat-coltext = 'Month Desc'.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_layout-zebra = 'X'.
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY_LVC'
    EXPORTING
      i_callback_program       = w_repid
      i_callback_pf_status_set = 'SUB_PF_STATUS'
      i_callback_user_command = 'USER_COMMAND'
      i_grid_title             = 'TESTING'
      is_layout_lvc            = wa_layout
      it_fieldcat_lvc          = it_fieldcat
    TABLES
      t_outtab                 = it_final
    EXCEPTIONS
      program_error            = 1
      OTHERS                   = 2.
IF sy-subrc <> 0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF.
*&      Form USER_COMMAND
FORM user_command USING ucomm LIKE sy-ucomm
                        selfield TYPE slis_selfield.
IF selfield-fieldname = 'CHECK'.
    DATA ref1 TYPE REF TO cl_gui_alv_grid.
    CALL FUNCTION 'GET_GLOBALS_FROM_SLVC_FULLSCR'
      IMPORTING
        e_grid = ref1.
    CALL METHOD ref1->check_changed_data.
    LOOP AT it_final WHERE check = 'X'.
      IF it_final-check IS INITIAL.
        it_final-check = 'X'.
      ELSE.
        CLEAR it_final-check.
      ENDIF.
      MODIFY it_final.
    ENDLOOP.
    selfield-refresh = 'X'.
ENDIF.
ENDFORM.                    "USER_COMMAND
*&      Form sub_pf_status
*       text
*      -->RT_EXTAB   text
FORM sub_pf_status USING rt_extab TYPE slis_t_extab.        "#EC CALLED
CLEAR is_rxtab.
is_rxtab-fcode = 'TEST'.
APPEND is_rxtab TO rt_extab.
SET PF-STATUS 'PF_STATUS' ."EXCLUDING rt_extab.
ENDFORM.                    "sub_pf_status

How to computer the row size of a table

Hi
How can i compute the row size of a table. My general Idea is
create table emp(
empno number(4),
ename varchar2(10),
hire_date date,
update_yn timestamp);
the character set is UFT8
how can i compute the size of this table
thanks

Hi,
for Avg. row length see this
SQL> desc dba_tables
Name                                      Null?    Type
OWNER                                     NOT NULL VARCHAR2(30)
TABLE_NAME                                NOT NULL VARCHAR2(30)
TABLESPACE_NAME                                    VARCHAR2(30)
CLUSTER_NAME                                       VARCHAR2(30)
IOT_NAME                                           VARCHAR2(30)
PCT_FREE                                           NUMBER
PCT_USED                                           NUMBER
INI_TRANS                                          NUMBER
MAX_TRANS                                          NUMBER
INITIAL_EXTENT                                     NUMBER
NEXT_EXTENT                                        NUMBER
MIN_EXTENTS                                        NUMBER
MAX_EXTENTS                                        NUMBER
PCT_INCREASE                                       NUMBER
FREELISTS                                          NUMBER
FREELIST_GROUPS                                    NUMBER
LOGGING                                            VARCHAR2(3)
BACKED_UP                                          VARCHAR2(1)
NUM_ROWS                                           NUMBER
BLOCKS                                             NUMBER
EMPTY_BLOCKS                                       NUMBER
AVG_SPACE                                          NUMBER
CHAIN_CNT                                          NUMBER
AVG_ROW_LEN NUMBER
AVG_SPACE_FREELIST_BLOCKS                          NUMBER
NUM_FREELIST_BLOCKS                                NUMBER
DEGREE                                             VARCHAR2(10)
INSTANCES                                          VARCHAR2(10)
CACHE                                              VARCHAR2(5)
TABLE_LOCK                                         VARCHAR2(8)
SAMPLE_SIZE                                        NUMBER
LAST_ANALYZED                                      DATE
PARTITIONED                                        VARCHAR2(3)
IOT_TYPE                                           VARCHAR2(12)
TEMPORARY                                          VARCHAR2(1)
SECONDARY                                          VARCHAR2(1)
NESTED                                             VARCHAR2(3)
BUFFER_POOL                                        VARCHAR2(7)
ROW_MOVEMENT                                       VARCHAR2(8)
GLOBAL_STATS                                       VARCHAR2(3)
USER_STATS                                         VARCHAR2(3)
DURATION                                           VARCHAR2(15)
SKIP_CORRUPT                                       VARCHAR2(8)
MONITORING                                         VARCHAR2(3)
CLUSTER_OWNER                                      VARCHAR2(30)
DEPENDENCIES                                       VARCHAR2(8)
SQL> Regards!

How to find last row in itab?

hi experts,
              How to find the last row or item in an itab.I am using if statement for which i have to check the last row and if it is the last row some set of statements should trigger.
thanks
mani

Just, find the last record :
* Standard table
DESCRIBE TABLE itab LINES n.
READ TABLE itab INDEX n.
Check on the table with special work at last record :
* Loop
LOOP AT itab.
    MOVE itab TO wa_itab.
    AT LAST.
* here wa_itab is the last record (itab is *****)
    ENDAT.
ENDLOOP.
Regards

How to find middle row in a table ?

Hi Friends,
Is it possible to find middle row in a table by SQL Query.
KarTiK.

Solution: sort the rows in order to create an ordered
sequence and then there will be a "middle row".Well, not quite.
If there are an odd number of rows then, yes, there will be a middle row in an ordered sequence, however if there is an even number of rows then the middle is between two rows... or... you could take it as the two rows either side of the middle....
SQL> select * from emp order by empno;
     EMPNO ENAME      JOB              MGR HIREDATE                   SAL       COMM     DEPTNO
      7369 SMITH      CLERK           7902 17/12/1980 00:00:00        800                    20
      7499 ALLEN      SALESMAN        7698 20/02/1981 00:00:00       1600        300         30
      7521 WARD       SALESMAN        7698 22/02/1981 00:00:00       1250        500         30
      7566 JONES      MANAGER         7839 02/04/1981 00:00:00       2975                    20
      7654 MARTIN     SALESMAN        7698 28/09/1981 00:00:00       1250       1400         30
      7698 BLAKE      MANAGER         7839 01/05/1981 00:00:00       2850                    30
      7782 CLARK      MANAGER         7839 09/06/1981 00:00:00       2450                    10
      7788 SCOTT      ANALYST         7566 19/04/1987 00:00:00       3000                    20
      7839 KING       PRESIDENT            17/11/1981 00:00:00       5000                    10
      7844 TURNER     SALESMAN        7698 08/09/1981 00:00:00       1500          0         30
      7876 ADAMS      CLERK           7788 23/05/1987 00:00:00       1100                    20
      7900 JAMES      CLERK           7698 03/12/1981 00:00:00        950                    30
      7902 FORD       ANALYST         7566 03/12/1981 00:00:00       3000                    20
      7934 MILLER     CLERK           7782 23/01/1982 00:00:00       1300                    10
14 rows selected.
SQL> select e.empno, e.ename, e.job, e.mgr, e.hiredate, e.sal, e.comm, e.deptno
2 from (select emp.*, row_number() over (order by empno) as rn from emp) e
3      ,(select round(count(*)/2) as middle, round(((count(*)+1)/2)) as middle2 from emp) m
4 where e.rn in (m.middle, m.middle2)
5 /
     EMPNO ENAME      JOB              MGR HIREDATE                   SAL       COMM     DEPTNO
      7782 CLARK      MANAGER         7839 09/06/1981 00:00:00       2450                    10
      7788 SCOTT      ANALYST         7566 19/04/1987 00:00:00       3000                    20
SQL> insert into emp values (1111, 'WILLIS', 'CLERK', 7902, sysdate, 900, null, 20);
1 row created.
SQL> select * from emp order by empno;
     EMPNO ENAME      JOB              MGR HIREDATE                   SAL       COMM     DEPTNO
      1111 WILLIS     CLERK           7902 18/01/2008 12:18:14        900                    20
      7369 SMITH      CLERK           7902 17/12/1980 00:00:00        800                    20
      7499 ALLEN      SALESMAN        7698 20/02/1981 00:00:00       1600        300         30
      7521 WARD       SALESMAN        7698 22/02/1981 00:00:00       1250        500         30
      7566 JONES      MANAGER         7839 02/04/1981 00:00:00       2975                    20
      7654 MARTIN     SALESMAN        7698 28/09/1981 00:00:00       1250       1400         30
      7698 BLAKE      MANAGER         7839 01/05/1981 00:00:00       2850                    30
      7782 CLARK      MANAGER         7839 09/06/1981 00:00:00       2450                    10
      7788 SCOTT      ANALYST         7566 19/04/1987 00:00:00       3000                    20
      7839 KING       PRESIDENT            17/11/1981 00:00:00       5000                    10
      7844 TURNER     SALESMAN        7698 08/09/1981 00:00:00       1500          0         30
      7876 ADAMS      CLERK           7788 23/05/1987 00:00:00       1100                    20
      7900 JAMES      CLERK           7698 03/12/1981 00:00:00        950                    30
      7902 FORD       ANALYST         7566 03/12/1981 00:00:00       3000                    20
      7934 MILLER     CLERK           7782 23/01/1982 00:00:00       1300                    10
15 rows selected.
SQL> select e.empno, e.ename, e.job, e.mgr, e.hiredate, e.sal, e.comm, e.deptno
2 from (select emp.*, row_number() over (order by empno) as rn from emp) e
3      ,(select round(count(*)/2) as middle, round(((count(*)+1)/2)) as middle2 from emp) m
4 where e.rn in (m.middle, m.middle2)
5 /
     EMPNO ENAME      JOB              MGR HIREDATE                   SAL       COMM     DEPTNO
      7782 CLARK      MANAGER         7839 09/06/1981 00:00:00       2450                    10
SQL>

How to find Tuple(row) size in a Data Block

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