Get number of rows affected in SQLPLUS...

Similar Questions

• See the number of rows affected the performance of sqlplus to a sql file

  Hello

  It's just we have a sql file that contains a bunch of select/update/insert statements.

  I have a unix script that calls sqlplus on this sql file. However, at the exit I don't get the number of rows affected.

  Without adding any code in the input sql file, how can I change the code of sqlplus shell script to print the number of rows affected for each statement in the sql file?

  ${ORACLE_HOME}/bin/sqlplus -L >> ${LOG_FILE} 2>&1  << EOF
    ${ORAID}/${ORAPASS}@${ORAINS}
    whenever sqlerror exit sql.sqlcode;
    set echo on;
    set feedback off;
    set serveroutput on;
    @${SQL_FILE};
    exit;
  EOF
  RC=$?
  

  The SQL_FILE of entry content is:

  select 12 "col1" from dual;
  select 'abcd' "col2" from dual;
  select;
  select 13 'col3' from dual;
  

  The result of the race of sqlplus is (LOG_FILE):

  SQL*Plus: Release 11.2.0.2.0 Production on Fri Jun 6 14:28:00 2014
  
  Copyright (c) 1982, 2010, Oracle.  All rights reserved.
  
  Enter user-name: 
  Connected to:
  Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
  With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
  Data Mining and Real Application Testing options
  
  SQL> SQL> SQL> SQL> SQL> SQL> select 12 "col1" from dual;
  
        col1
  ----------
          12
  SQL> select 'abcd' "col2" from dual;
  
  col2
  ----
  abcd
  SQL> select;
  select
       *
  ERROR at line 1:
  ORA-00936: missing expression
  
  
  Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
  With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
  Data Mining and Real Application Testing options
  

  Thank you

  Srinivas - y.

  1. echo setting
  2. Set feedback off;

  use

  Set of feedback on

• to check the number of rows affected by an update query in a procedure

  Hello
  I want to check the number of rows affected by the update script that I used in a procedure and I shoud be able to use this count towards the end of the procedure.
  How can I do?
  
  for example:
  create or replace procedure p1 is
  Start
  Update table1 set x = 'a', where y = 'b ';.
  end p1;
  
  Published by: christele CS on May 1, 2012 22:06

  Hello

  Try the below a...

  create or replace procedure p1 is
  Start
  Update table1 set x = 'a', where y = 'b ';.
  dbms_output.put_line (SQL % ROWCOUNT |) ("Lines updated ');
  end p1;

• get the number of rows affected by their table top

  Hello, I need to count the number of rows updated in table form. In the process of ApplyMRU, I can use the string substitution #MRU_COUNT # to show the lines updated in a success message, but I need to get this value and store it on a table. Any help would be much appreciated. Thank you.

  oscarjavier99 wrote:

  Hello, I need to count the number of rows updated in table form. In the process of ApplyMRU, I can use the string substitution #MRU_COUNT # to show the lines updated in a success message, but I need to get this value and store it on a table. Any help would be much appreciated. Thank you.

  For that you would benefit from the APEX$ ROW_STATUS integrated substitution string.

  1. create a page element display only (in my case P15_UPDATED_ROWS) Save Session State set to Yes and the Type of Condition is set to never.

  2. Add a calculation after the shows with a Type of static assignment and calculation value 0 to reset the counter whenever the page is sent.

  3. Add an On submit - after calculations and Validations process of PL/SQL page linked to your tabular presentation with a Status of Type PL/SQL Expression and Expression 1 :apex$row_status = 'U' and the code of the following process :

  :p15_updated_rows := :p15_updated_rows + 1;
  

  If you don't actually means "day" in the strict sense, and then change the status of process to include possible APEX$ ROW_STATUS 'C', 'U', and "D" values as needed. If you want to count all created, updated and deleted lines, do not add the condition to the process, but make sure the extended run is set to createand changed lines.

• How can I get number of rows in DB for view with "only up to line number.

  Hi all
  
  I use jdeveloper 11.1.1.3.0
  
  in the development of the object view, only until the line number is set to 100, but it has 1000 row in DB.
  
  now page jspx, I need to get the number of rows in db (1000), how can I get it?
  
  If I get iterator or view are of the object status is not true, it returns the value 100.
  
  How can I get 1000?

  Given that you have set the limit line number for the VO, VO will always and forever don't have 100 records or less. If you want the total number in the comic book, you need to create an another VO that is not the count (*) or one that does not limit the number of rows.

  John

• number of rows affected by report

  Hi all
  
  I want to show the number of result rows to a query on a report page. my test query returns 52 sets of data (also when I execute the same statement with select count (*)) but the #TOTAL_ROWS variable # said that 11.
  I think it's because I put the value in pagination of row 10...
  
  is there a known issue with this? is #TOTAL_ROWS # only supposed to show the number of lines of recoveries?
  
  Thanks in advance hendrik

  Hendrik,

  This will not work unless you paging system is set (with pagination). You can always count your rows in a separate process and get this value by using the same SQL as in your report.

  Denes Kubicek
  -------------------------------------------------------------------
  http://deneskubicek.blogspot.com/
  http://www.Opal-consulting.de/training
  http://Apex.Oracle.com/pls/OTN/f?p=31517:1
  -------------------------------------------------------------------

• number of rows in table is not updated in RPD obiee 11.1.1.9?

  Hello

  I'm working on obiee 11.1.1.9.

  When I'm trying to update the rows in the table to the RPD, I'm getting following error. ;

  

  I tried so many times. But still I don't get number of rows tables.

  Please help me.

  Thanks in advance,

  A.Kavya.

  Hello

  As you say, I checked the side DB. I am using Toad. while I see the table & script data in abrowser schem, I get the error message like "access violation at address 01c688df in module toad.exe" on the opening of the browser (73231) editor or contours. to do this, I installed the new version of Toad .so I did nt get any errors at the level of the RPD. I get the number of rows updated successfully.

  

  Thank you best regards &,.

  A.Kavya.

• Rows affected the dynamic SQL

  
  Hello

  VERSION - Oracle9i Enterprise Edition Release 9.2.0.6.0 - 64 bit Production

  I want the number of rows affected by SQL dynamic, as shown below in the code where insert statement will be repeated for each record in the CURSOR.

  for rec in c1
  loop

  
  ABC: =' insert into test
  Select a.*,' | recomm. OP_ID |', "' | recomm. OP_NAME | " 'of BL_testI' | recomm. OP_ID: ' where START_DATE > = trunc(sysdate-2) and START_DATE < trunc(sysdate-1)';

  insert into str_test values (abc);

  immediately run abc;

  commit;
  
  When exit c1% notfound;
  end loop;

  In a normal query I would do it spontaneously SQL COUNT but cannot use it here.

  Thnx in advance

  Just use SQL % ROWCOUNT. What is the problem with that?

  Here is an example.

  SQL > declare
  l_sql 2 varchar2 (4000);
  3. start
  4 l_sql: = ' insert into t select * from emp';
  5. immediately run l_sql;
  6 dbms_output.put_line(l_sql ||) ': Number of inserted rows = ' | to_char(SQL%RowCount));)
  7 end;
  8.

  insert into t select * from EMP: number of inserted rows = 11

  PL/SQL procedure successfully completed.

  SQL >

• How can I get the number of rows in the table using Sunopsis API target in ODI 10 g?

  Hi guys,.
  
  In fact, I want to send an alert message as soon as the interface is run from a package. I've included alert OdiSendMail that sends an email once the interface is running.
  
  Could someone please tell how to get the number of rows inserted into the table the Sunopsis API target.
  
  I tried to use < % = odiRef.getNbRows () % >, but this has not worked for me. Since I am a beginner, could you please help out me
  
  This is my mail to send ODI format
  
  "The population of data managed to < % = odiRef.getSysDate () % >
  
  Total of lines in the target table is: < - need an API code-> "
  
  
  Kind regards
  
  Clinton
  
  Published by: LawrenceClinton on February 25, 2013 20:53

  Hello

  Create the project with details below variable

  Nom_de_variable: Total_Row_Count

  Type of variable: Variable discount

  Definition tab:
  Data type: digital
  Action: No persistent

  Refresh the tab:
  Schema: provide the schema of your repository to work and be

  SELECT log.nb_row
  THE journal of snp_step_log, snp_scen_step step
  WHERE log.nno = step.nno
  AND step.scen_no = (SELECT scen_no FROM snp_scen_step WHERE step_name='<%=odiRef.getPrevStepLog ('STEP_NAME") % > ')
  AND log.sess_no = '< % = odiRef.getSession ("SESS_NO") % >' code at low
  AND step.step_name = ' < % = odiRef.getPrevStepLog ("STEP_NAME") % > '

  Note: add this variable after the stage of interface in your package (after the interface anywhere you can place), you can add this variable before ODISendEmailNotification in your package

  call this varciable * #Total_Row_Count * in the Notification of ODISendEmail

  for example :

  Data has been fulfilled successfully in < % = odiRef.getSysDate () % >
  Total no of lines filled are: * #Total_Row_Count *

  it will work

  cordially,
  Phanikanth

  edited by: Phanikanth on February 28, 2013 01:13

  edited by: Phanikanth on February 28, 2013 01:14

• Get the number of rows in the oracle table

  Hi all
  I want to get the total number of rows in the sql to the appmodule table.
  After you apply the criteria to view some on the view object. If he try with getallrowsinrange the number of rows found within the viewobject was but I want a total number of rows in the sql table.
  
  How can I get that
  
  I use jdev 11.1.1.5
  
  Thanks in advance

  I threw something together, quick and dirty, don't hesitate to optimize.

  Assuming you want the County table, I put the code in a subclass of EntityDefImpl since it is representing a table in the middle tier.

  public class EmpDefImpl
        extends EntityDefImpl {
    /**
     * This is the default constructor (do not remove).
     */
    public EmpDefImpl( ) {}
  
    //~ Methods ****************************************************************************
  
    public long getTableRowCount( DBTransaction transaction ) {
      String query = getQuery( );
      String countQuery = String.format( "SELECT COUNT(*) FROM (%s)", query );
      long count = 0;
  
      ViewObject vo = transaction.createViewObjectFromQueryStmt( countQuery );
  
      try {
        vo.executeQuery( );
  
        Row row = vo.first( );
        Number number = (Number)row.getAttribute( 0 );
        count = number.longValue( );
      } finally {
        vo.remove( );
      }
  
      return count;
    }
  }
  

  Depending on your card type, you may not get an oracle.jbo.domain.Number, but something else, so the cast may need correction.

  Usage example:

  public class EmpEditViewImpl extends ViewObjectImpl {
    public EmpEditViewImpl() {
    }
  
    protected void executeQueryForCollection( Object object, Object[] object2, int i ) {
      super.executeQueryForCollection( object, object2, i );
  
      EmpDefImpl def = ( EmpDefImpl )getEntityDef( 0 );
      long tableRowCount = def.getTableRowCount( getDBTransaction() ) );
  
      // Do something with it
    }
  }
  

  As you can see, the code is fairly generic. Also, you might be able to put this in a base extension ADF class.

  Sascha

  Published by: Sascha Herrmann on June 7, 2012 14:39

• Export of DataPump API - number of rows exported using

  Hello

  I'm working on the procedure to export data in the table before deleting the partition. It will be run by the Scheduler of the data, that's why I want to run the datapump job using the API.

  I wonder, if it is possible to get the number of rows exported. I would compare with the number of rows in a partition before you delete the partition.

  
  

  Thank you

  Krystian

  Hello

  Don't know exactly how you want the number of rows per partition that have been exported, but here are a few ideas:

  1. create a log file by using 'add_file ':

  -Add a log file

  dbms_datapump.add_file (h, ' DEPTJOB.log ', a', NULL,)

  dbms_datapump.Ku$ _file_type_log_file);

  It is also in my example included below.  Here is the content after the DEPTJOB.log workload (situated in Oracle Directory object would be "in my example):

  $ cat /tmp/DEPTJOB.log

  Departure 'SCOTT '. "" DEPTJOB ":

  Object type TABLE_EXPORT/TABLE/TABLE processing

  Processing object type TABLE_EXPORT/TABLE/TABLE_DATA

  . . "exported"SCOTT" DEPT': 'SYS_P1581' 5,929 KB 2 lines

  . . "exported"SCOTT" DEPT': 'SYS_P1582' 5,914 KB 1 lines

  . . "exported"SCOTT" DEPT': 'SYS_P1583' 5,906 KB 1 lines

  Table main 'SCOTT '. "' DEPTJOB ' properly load/unloaded

  ******************************************************************************

  Empty the files together for SCOTT. DEPTJOB is:

  /tmp/Dept.dmp

  Job 'SCOTT '. "" DEPTJOB "managed to 00:00

  You can then review or extract the information from the log file.

  2. save the master table and the query for the busy lines.

  Use the parameter "KEEP_MASTER":

  -Keep the main table to be deleted after employment ends

  dbms_datapump.set_parameter(h,'KEEP_MASTER',1);

  Here's my example, the request to the main table is at the end.

  $ sqlplus scott/tiger @deptapi

  SQL * more: version 12.2.0.0.2 Beta on Fri Jan 22 12:55:52 2016

  Copyright (c) 1982, 2015, Oracle.  All rights reserved.

  Last successful login time: Friday, January 22, 2016 12:55:05-08:00

  Connected to:

  Database Oracle 12 c Enterprise Edition Release 12.2.0.0.2 - 64-bit Beta

  With the options of partitioning, OLAP, advanced analytics and Real Application Testing

  Connected.

  SQL > SET FEEDBACK 1

  SQL > SET 10 NUMLARGEUR

  SQL > SET LINESIZE 2000

  SQL > SET TRIMSPOOL ON

  SQL > SET TAB OFF

  SQL > SET PAGESIZE 100

  SQL > SET SERVEROUTPUT ON

  SQL >

  SQL > Rem save on the old table of scott.dept

  SQL > dept and rename it dept_old.

  Renamed table.

  SQL >

  SQL > Rem re-create it with partitions

  SQL > CREATE TABLE dept (deptno NUMBER varchar (14) dname, loc varchar (13)) PARTITION INTO 3 PARTITIONS HASH (deptno)

  2.

  Table created.

  SQL >

  SQL > Rem fill the dept table

  SQL > insert into dept select * from dept_old;

  4 lines were created.

  SQL >

  SQL > Rem now create datapump job export SCOTT. DEPT. using the API

  SQL > DECLARE

  2: NUMBER;         -Handle Datapump

  3 jobState VARCHAR2 (30);   -To keep track of job status

  4 ind NUMBER;         -Index of the loop

  5 the ku$ _LogEntry;   -For error messages and work in PROGRESS

  6 js ku$ _JobStatus;  -The State of the work of get_status

  7 jd ku$ _JobDesc;    -The get_status job description

  8 m ku$ _Status;     -The status returned by get_status object

  9 sql_stmt VARCHAR2 (1024);

  nom_partition 10-VARCHAR2 (50);

  11 rows_completed NUMBER;

  12

  BEGIN 13

  14-

  15 run the Installer based on the operation to perform.

  16-

  17 h: = dbms_datapump.open ('EXPORT', 'TABLE', NULL, 'DEPTJOB', NULL);

  18 dbms_datapump.add_file (h, 'dept.dmp', 'd', NULL,

  dbms_datapump.Ku$ _file_type_dump_file 19, 1);

  20

  21    --- Add a logfile                                                         

  22 dbms_datapump.add_file (h, ' DEPTJOB.log ', a', NULL,)

  23 dbms_datapump.ku$ _file_type_log_file);

  24

  25 dbms_datapump.metadata_filter (h, 'SCHEMA_EXPR', ' IN ("SCOTT") ");

  26 dbms_datapump.metadata_filter (h, 'NAME_LIST', "'DEPT"');

  27

  28

  29-

  30 start work.

  31-

  32 dbms_datapump.set_parameter (h, 'SILENT', 'banner');

  33

  34 -keep the main table to be deleted after employment ends

  35 dbms_datapump.set_parameter(h,'KEEP_MASTER',1);

  36

  37 dbms_datapump.start_job (h);

  38

  39-

  40 - run to grabbing the output of the job and write in the output log.

  41-

  42 jobState: = "UNDEFINED";

  43 WHILE (jobState! = "COMPLETED") AND (jobState! = "STOPPED")

  44 LOOP

  45 dbms_datapump.get_status (h,

  dbms_datapump.Ku$ _status_job_error 46.

  dbms_datapump.Ku$ _status_wip 47, -1, jobState, m);

  48

  49      --

  50. If we received messages WIP or error for the work, display them.

  51      --

  52 IF (BITAND(sts.mask,dbms_datapump.ku$_status_wip)! = 0)

  53 THEN

  54: = sts.wip;

  55 ON THE OTHER

  56 IF (bitand(sts.mask,dbms_datapump.ku$_status_job_error)! = 0)

  57 THEN

  58: = sts.error;

  59 ON THE OTHER

  the 60: = NULL;

  61 END IF;

  62 END IF;

  63

  64 the IS NOT NULL IF

  65 THEN

  66 ind: = the. FIRST;

  67 then AS ind IS NOT NULL

  68 LOOP

  69 dbms_output.put_line ((ind). LogText);

  70 ind: = the. Next (IND);

  LOOP END 71;

  72 END IF;

  73 END LOOP;

  74

  75-

  76 - release work.

  77-

  78 dbms_datapump.detach (h);

  79

  80-

  81. all exceptions that spread at this point will be captured.

  82 - the details are extracted from get_status and displayed.

  83-

  EXCEPTION OF 84

  85, SO THAN OTHERS THEN

  BEGIN 86

  87 dbms_datapump.get_status (h,

  dbms_datapump.Ku$ _status_job_error, 0-88,.

  89 jobState, sts);

  90 IF (BITAND(sts.mask,dbms_datapump.ku$_status_job_error)! = 0)

  91 THEN

  the 92: = sts.error;

  93 the IS NOT NULL IF

  94 THEN

  95 ind: = the. FIRST;

  96 although ind IS NOT NULL

  LOOP OF 97

  98 dbms_output.put_line ((ind). LogText);

  99 ind: = the. Next (IND);

  100 END LOOP;

  101 END IF;

  102 END IF;

  103

  BEGIN 104

  105 DBMS_DATAPUMP. STOP_JOB (m, 1, 0, 0);

  EXCEPTION OF 106

  107. WHEN OTHER NULL THEN;

  END 108;

  109

  110 EXCEPTION

  111, SO THAN OTHERS THEN

  112 dbms_output.put_line ('ORA-00000: an unexpected exception during ' |)

  113 ' Manager of exceptions. ' ||

  114 ' sqlcode = ' | TO_CHAR (SQLCODE));

  END 115;

  END 116;

  117.

  Departure 'SCOTT '. "" DEPTJOB ":

  Object type TABLE_EXPORT/TABLE/TABLE processing

  Processing object type TABLE_EXPORT/TABLE/TABLE_DATA

  . . "exported"SCOTT" DEPT': 'SYS_P1581' 5,929 KB 2 lines

  . . "exported"SCOTT" DEPT': 'SYS_P1582' 5,914 KB 1 lines

  . . "exported"SCOTT" DEPT': 'SYS_P1583' 5,906 KB 1 lines

  Table main 'SCOTT '. "' DEPTJOB ' properly load/unloaded

  ******************************************************************************

  Empty the files together for SCOTT. DEPTJOB is:

  /tmp/Dept.dmp

  Job 'SCOTT '. "" DEPTJOB "managed to 00:00

  PL/SQL procedure successfully completed.

  SQL >

  SQL > table main query Rem for number of lines completed

  SQL > column nom_partition format a10

  SQL > format 9999 column lines

  SQL > SELECT nom_partition, COMPLETED_ROWS FROM SCOTT . DEPTJOB WHERE BASE_OBJECT_NAME = "DEPT";

  PARTITION_ COMPLETED_ROWS

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

  SYS_P1581 2

  SYS_P1583 1

  SYS_P1582 1

  3 selected lines.

  SQL >

  SQL > "EXIT";

  3. you might even extract information of the call from the command line:

  $ sqlplus scott/tiger @deptapi.sql | grep 'exported ' | AWK ' {print "Table:" $4, 'charge' $7, $8} '

  Table: 'SCOTT '. "" DEPT ":"SYS_P1581"loaded 2 rows

  Table: 'SCOTT '. "' DEPT ': 'SYS_P1583' loaded 1 lines

  Table: 'SCOTT '. "' DEPT ': 'SYS_P1582' loaded 1 lines

• How to determine the number of rows in the database and save the result to a local variable?

  Hello

  I'm a newbie in the use of TestStand, databases and SQL, and now I've met difficulties. I use TestStand 2014 (32 bit).

  I have a need to know the number of rows in a database and save that number in a local variable. I tried to practice using the database of the Types of step provided with TS. I tried to use the following in a SQL statement:

  Locals.NumberOfRows = ("SELECT COUNT (*) FROM TEST_TABLE")

  It returns an error: specified value is not the expected type. My goal is possible in this way, or I'm doing this completely wrong?

  -RautSa

  Thank you for your response, Norbert. I have a database of who wins new values at random, and sometimes I need the exact number of rows in this table.

  I managed to achieve my goal by using the SQL statement: "SELECT COUNT (*) as Rowcount OF TEST_TABLE", followed by a data GET operation, which records that number of lines in a local variable.

  -RautSa

• number of rows in the table

  Hi master,

  I have a requirement. During the passage of a table, I need to get the number of rows in this table. Sometimes, when I spend 2 or more table names, I need to get the same count of result of lines. I got the below function. but it shows all the rows in the table. I want pariticular tabels only. How I can I get it.

  Select table_name, num_rows from all_tables where table_name in ('EMP', 'Department');  I tried.  I need to a procedure or function. who will pass the name of the table as a parameter and 1 or more than the name of a table if I pass, I need to display information from table name and number of lines.

  CREATE OR REPLACE

  TYPE t1_obj AS OBJECT)

  table-name VARCHAR2 (30),

  CNT NUMBER

  )

  /

  CREATE OR REPLACE

  TYPE t1_obj_tbl AS THE t1_obj TABLE

  /

  CREATE OR REPLACE

  FUNCTION (f1)

  p_schema_name VARCHAR2

  )

  RETURN t1_obj_tbl

  PIPELINED

  IS

  v_retval t1_obj: = t1_obj (null, null);

  BEGIN

  FOR v_rec IN (SELECT table_name FROM dba_tables where owner = upper (p_schema_name) and nvl (iot_type, 'X')! = "IOT_OVERFLOW") LOOP

  v_retval.table_name: = v_rec.table_name;

  RUN IMMEDIATELY "SELECT COUNT (*) FROM" | p_schema_name | '.' || v_rec.table_name

  IN v_retval.cnt;

  PIPE ROW (v_retval);

  END LOOP;

  RETURN;

  END;

  Select * from table (f1 ('scott'));

  The above function returns information from the table in SCOTT scheama. I need only perticular table info.

  Please notify.

  AR.

  Hi Sven,

  Front end people ask me the requirement. They wanted a proc or function as I want.

  Please help me.

  Concerning

  AR

• Error creating a salary. ORA-01422: exact fetch returns more than the requested number of rows in the hr_maintain_proposal_swi procedure insert_salary_proposal package

  Hi all

  We try to add new proposal for a salary of some employees from form August 1, 2015 (the Date of the beginning of employee)

  There is no existing salary proposal doesn't exist for these employees.

  We get below error.

  
  

  ORA-01422: exact fetch returns more than the requested number of rows in the hr_maintain_proposal_swi procedure insert_salary_proposal package

  
  

  Help, please.

  Thank you

  Tarun

  Hi John,.

  If it helps, take a look at the following note:

  ORA-01422 exact Fetch returns more than number of lines requested in Hr_maintain_proposal_swi (Doc ID 1673527.1)

  Kind regards

  Rajen

• Number of rows in each partition is displayed with a NULL value for a table partitioned in user_tab_partitions. Why?

  I created a table and partitioned on the date of the entry and added a local partitioned index.

  Now, I use a query to extract "num_rows" of user_tab_partitions to know the number of rows in each partition.

  Getting this value as null num_rows, wonder why?

  After looking to explain the Plan after interrogation ("select * from my_table1 where entry_date = 1 January 2015" ;))

  to find out if she actually partitioned table and its data in different partitions, I interpreted in effect because the query plan had a line like Partition_range (Single).

  My Question is:

  (a) is actually partitioned data (have I misinterpreted the Explain plan)

  (b) why is the num_rows null column in the query (Pasted below)

  (c) also in addition what difference it would have been if I had created a Global Index instead of the Local Index in my case?

  The following code Snippet:

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

  create the table my_table1
  (
  roll_no number constraint my_table1_pk primary key,
  date of entry_date
  )
  partition of range (entry_date)
  (
  PARTITION data_p1 VALUES LESS THAN (TO_DATE (December 31, 2014 ',' DD-MM-YYYY ""));
  PARTITION data_p2 VALUES LESS THAN (MAXVALUE)
  );

  
  create an index only my_table1_indx on my_table1 (entry_date) local;

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

  I now insert two lines:
  insert into my_table1 values (1, to_date ('01-01-2015', ' dd-mm-yyyy'));
  insert into my_table1 values (2, to_date('01-02-2015','dd-mm-yyyy'));

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

  These have been inserted successfully, now using the query below shows num_rows column as null. I don't know why?

  SELECT table_name, num_rows, high_value, nom_partition
  Of user_tab_partitions
  where table_name = 'MY_TABLE1 '.
  ORDER BY table_name, nom_partition;

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

  
  

  (a) is actually partitioned data (have I misinterpreted the Explain plan)

  Yes, it is partitioned. You can query this particular partition SELECT * FROM my_table1 (data_p1) PARTITION to check that.

  (b) why is the num_rows null column in the query (Pasted below)

  As already mentioned that you have not collected statistics.

  (c) also in addition what difference it would have been if I had created a Global Index instead of the Local Index in my case?

  In fact, you have created two types of indexes without knowing (can be)! One is not partitioned (although this column is not partition key) and another is partitioned (LOCAL). They are MY_TABLE1_PK and MY_TABLE1_INDX. You can check that USER_INDEXES.

  You can read this article to get an early jump on the partitioning of decision. Partition: Partition decisions