External Procedure in Oracle7

I have found the topic for external procedure in Oracle document both Oracle9 and Oracle8, but not in Oracle7. Is external procedure supported in Oracle7? If yes, where can I find the document?
Thanks.

What can I do if I need the function like External Procedures? The best option is to ugrade your database (Oracle 7 is meanwhile for a very long time out of support)
Another option (although I really don't recommend it!) might be to install a second database with a version that supports both, external procedures and database links to Oracle 7.
Configure the external procedure on this database and call the extprocs from the original database through the database link.

Similar Messages

  • Database design and pl/sql vs external procedures

    hi,
    My project involves predicting arrival time of a bus at a bus-stop, given statistical data of traffic patterns on the previous ‘n’(say 3) days, as well as the current location of the bus(latitude-longitude).
    Given current bus location, I derive my distance-until-destination bus-stop, which must be translated into time until arrival.
    Ive enlisted the triggers and procedures involved in making the prediction. Thse procedures especially the determination of perpendicular distances involve some complex trigonometric operations. I would like to know if my approach is correct and my database design is suited for the operations to b performed.
    Will it be more efficient to implement the procedures as external procedures or as pl/sql blocks
    This is my database design:
    LINKS ( a link is the road segment between adjacent bus-stops)
    LINK_ID                NUMBER      [PRIMARY-KEY]
    START_LATITUDE          NUMBER     
    START_LONGITUDE     NUMBER     
    START_STOP_ID          NUMBER
    END_LATITUDE          NUMBER
    END_LONGITUDE          NUMBER
    END_STOP_ID          NUMBER
    LINK_LENGTH          NUMBER
    BUS_ROUTE
    ROUTE_ID               NUMBER
    LINKS_ENROUTE          VARRAY(30) OF NUMBER
    STOPS_ENROOUTE          VARRAY(30) OF NUMBER
    TRACK(keeps track of current location of bus)
    BUS_ID           NUMBER          [PRIMARY-KEY]
    ROUTE          VARCHAR2(20)
    LATITUDE          NUMBER
    LONGITUDE          NUMBER
    TS               TIMESTAMP
    LINK_ID          NUMBER
    START_STOP     NUMBER
    END_STOP          NUMBER
    ARRIVAL_TIMES(actual arrival times of the bus, updated by track)
    BUS_ID           NUMBER     [PRIMARY-KEY]
    BUS_ROUTE          VARCHAR2(20)
    ARRIVAL          TIMESTAMP
    STOP_ID          NUMBER
    ETA (expected time of arrival)
    BUS_ID          NUMBER
    BUS_ROUTE          VARCHAR2(20)
    BUS_STOP_ID     NUMBER
    ARR_TIME          VARRAY(5) OF TIMESTAMP
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    1)TRACK_TRIGGER
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    Invoke a procedure that calculates perpendicular distance from current location to all links en-route (cursor on LINKS).
    Results are stored in a temporary table. Select the link-id of the tuple whose perpendicular distance is MINIMUM. This is the link the bus is currently on. Place link-id, start_stop_id and end_stop_id in corresponding row of TRACK.
    2)ARRIVAL_TRIGGER
    update ARRIVAL_TIMES.and store in ARRIVAL_TIMES that start-stop id with the time-stamp of the current track record.
    b)update ETA: Find the BUS-STOPS that come before the START_STOP of current track record. All these rows are deleted from the ETA tables, as the bus has already crossed these stops.
    3)Prediction Algorithm Procedure.
    Determine distance until destination for each STOP, 20 stops down from stop current location.
    Determine current avg. speed of the bus over a 2 hour window, by dividing total distance traveled by time taken.
    Calculate time-until arrival T1=current avg. speed * distance until destination
    From the records of previous ‘n’ days (say n=3) find those buses on the same route that were near the link the bus is currently on. Again determine avg speed over 2 hour window and calculate avg. speed.
    Calculate travel time T(i) = speed*distance until destination.     i.=2,3, 4…
    The final predicted arrival time is a weighted sum of all T(i).
    I hope Im not asking for too much, but the help would be greatly appreciated.
    Thankyou,
    Amina

    hello,
    actually i can manage ETA without a varray, since there will b a maxximum of 3 -4 values of expected arrival times at each stop. this can b done with separate columns.
    though i dont quite understand how lag() will help me...from what i understand lag() is to access values of previous rows. but in ETA table each element in the varray(if there is one) is going to be the expected arrival time of buses on a particular route at that particular stop, and is different from the arrival time at a previous stop(i.e.row).
    but for my other table BUS_ROUTE i have 2 varrays describing the links and stops enroute. in quite a few procedures i have to loop through these arrays and perform some calculations in every iteration is varray the best way 2 go, or nested tables?
    Thank you
    Amina
    As an aside, external procedures tend by their very
    nature to be slow - there's an overhead incurred
    each time we step outside the database. Therefore
    you really ought to avoid using a C extproc unless
    your calculations really cannot be done in PL/SQL or
    a Java Stored Procedure.
    Also, before you go down the VARRAY route you should
    consider the virues of analytic functions, notably
    [url=http://download-west.oracle.com/docs/cd/B1050
    1_01/server.920/a96540/functions56a.htm#83619]LAG()[/u
    rl]. I think you really ought to do some
    benchmarking of parformance before you start afdding
    denormalised columns like ETA. You may find the
    overhead in maintaining those columns exceeds their
    perceived benefits.
    Cheers, APC

  • ORA-12203 while calling a form from external procedure

    Hi
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    We have checked through the process explorer in the server, process is getting created successfully, but doesn't executed. We tried to start the process manually, it is throwing ora-12203: TNS unable to connect to destination.
    We are able to connect the database from form's runtime. but if this runtime is executed from a process which is created by external procedure, it is throwing ora-12203.
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    check tnsnames and listener files.verify the host and the port

  • ORA-06521: PL/SQL: Error mapping function with 10.1.0 external procedure

    We have an external procedure running fine on 8.1.7 on VMS. After compiling and linking succesfully under 10.1.0, I get ORA-06521 PL/SQL: Error mapping function and ORA-06522: ERROR - vms_dlsym for file x, where x in the filename of the linked executable. Another external procedure that does not connect to the 10.1.0 database runs fine. What could be causing this error in Server 10.1.0 on VMS?
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    Dave

    Here is the code to create the function:
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    (h_file_name IN VARCHAR2)
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    IS EXTERNAL
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    NAME "f1"
    LANGUAGE C
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    PARAMETERS
    (CONTEST,
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    OCIExtProcContext *epctx;
    char h_file_name[70];
    char h_line_txt [251];
    int lineno;
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  • ORA-28575: unable to open RPC connection to external procedure agent when trying to connect ORE.connect

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    ORA-06512: at "RQSYS.RQEVALIMPL", line 14
    ORA-06512: at line 4
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    # Generated by Oracle configuration tools.
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    -============================
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    (DESCRIPTION =   
      (ADDRESS_LIST=
       (ADDRESS = (PROTOCOL = TCP)(HOST = 10.168.11.69)(PORT = 1521)) 
      (CONNECT_DATA =   
        (SERVER = DEDICATED) 
        (SID = DB11G)
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          (ORACLE_HOME = H:\ORA11G\product\11.2.0\dbhome_1)
          (PROGRAM = extproc)
          (ENVS = "EXTPROC_DLLS=ANY")
    LISTENER =
      (DESCRIPTION_LIST =
        (DESCRIPTION =
          (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
          (ADDRESS = (PROTOCOL = TCP)(HOST = 10.168.11.69)(PORT = 1521))
    Sherry

  • External procedure with Pro*C in it

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    null

    Is your library object pointing to one shared library and in turn function in this library is 'looking' to another shared library? if so, that is not allowed

  • How to use external procedures in OWB Mapping

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    mandi

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  • Problem in Calling External Procedure

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  • Cannot get external procedural call in Oracle RAC Environment

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    Any Reply Please...
    would appreciate your help...

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  • Not able to create Oracle External Procedure to Run Host Commands

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    hi
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    or
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         * Function Name:- isDirectory
         * Description  :-This function checks the name provided by the user is a directory or not
         FUNCTION isDirectory (FILE IN VARCHAR2)
              RETURN NUMBER AS LANGUAGE JAVA NAME 'com.myCompany.myApp.bulk.FileUtil.isDirectory (java.lang.String) return int';
         * Function Name:- isFile
         * Description  :-This function checks the name provided by the user is a file or not
         FUNCTION isFile (FILE IN VARCHAR2)
              RETURN NUMBER AS LANGUAGE JAVA NAME 'com.myCompany.myApp.bulk.FileUtil.isFile (java.lang.String) return int';
         * Function Name:- isExist
         * Description  :-This function checks the existance of file,correctness of the directory provided by the user.
         * @Param file_name :- File Name in directory
         * @return retcode  :- Error checking while uploading the feed.
         FUNCTION isExist(file_name IN VARCHAR2,
                    is_dir       BOOLEAN)
              RETURN PLS_INTEGER
         IS
              retcode PLS_INTEGER := -1;
              v_errcode PLS_INTEGER;
              v_errtext      VARCHAR2(1000);
              l_section_name VARCHAR2(32) := 'isExist ' ;
         BEGIN
              IF VTMLOG.isDebugEnabled THEN
                   VTMLOG.debug(l_section_name,$$PLSQL_LINE, 'Checking existense of '||file_name);
              END IF;
              retcode   := is_exist(file_name);
              IF retcode = 1 THEN
                   IF is_dir THEN
                        retcode := isDirectory(file_name);
                   ELSE
                        retcode := isFile(file_name);
                   END IF;
                   IF retcode          = 1 THEN
                        retcode    := canread(file_name);
                        IF retcode != 1 THEN
                             VTMLOG.error(l_section_name,$$PLSQL_LINE, ' Can not read ' || file_name);
                        END IF;
                   ELSE
                        VTMLOG.error(l_section_name,$$PLSQL_LINE, ' Unable to check if ' || file_name || ' is directory or file ');
                   END IF;
              ELSE
                   VTMLOG.error(l_section_name,$$PLSQL_LINE, file_name || ' does not exist ');
              END IF;
              VTMLOG.debug(l_section_name,$$PLSQL_LINE, 'Leaving ' );
              RETURN retcode;
         EXCEPTION
         WHEN OTHERS THEN
              VTMLOG.SHOW_ERROR_MESSAGE(l_section_name,$$PLSQL_LINE);
              RAISE;
         END isExist;
         PROCEDURE foobar(feedname VARCHAR2)
         IS
                    retval PLS_INTEGER;
            BEGIN
              /* implementation omitted */
              retval := isExist('feed.txt',false);
         EXCEPTION
              WHEN OTHERS THEN
                   RAISE;
         END foobar;
    END VSAMPLE_1;
    /* This version at least shows the tree. But I can't reach the external by clicking in the navigation tree just the placeholders */
         PROCEDURE foobar(feedname IN VARCHAR2);
    END VSAMPLE_2;
    CREATE OR REPLACE PACKAGE BODY VSAMPLE_2
    IS
            FUNCTION canread (FILE IN VARCHAR2) RETURN NUMBER;
            FUNCTION is_exist (FILE IN VARCHAR2) RETURN NUMBER;
            FUNCTION isDirectory (FILE IN VARCHAR2) RETURN NUMBER;
            FUNCTION isFile (FILE IN VARCHAR2) RETURN NUMBER;
         * Function Name:- isExist
         * Description  :-This function checks the existance of file,correctness of the directory provided by the user.
         * @Param file_name :- File Name in directory
         * @return retcode  :- Error checking while uploading the feed.
         FUNCTION isExist(file_name IN VARCHAR2,
                    is_dir       BOOLEAN)
              RETURN PLS_INTEGER
         IS
              retcode PLS_INTEGER := -1;
              v_errcode PLS_INTEGER;
              v_errtext      VARCHAR2(1000);
              l_section_name VARCHAR2(32) := 'isExist ' ;
         BEGIN
              IF VTMLOG.isDebugEnabled THEN
                   VTMLOG.debug(l_section_name,$$PLSQL_LINE, 'Checking existense of '||file_name);
              END IF;
              retcode   := is_exist(file_name);
              IF retcode = 1 THEN
                   IF is_dir THEN
                        retcode := isDirectory(file_name);
                   ELSE
                        retcode := isFile(file_name);
                   END IF;
                   IF retcode          = 1 THEN
                        retcode    := canread(file_name);
                        IF retcode != 1 THEN
                             VTMLOG.error(l_section_name,$$PLSQL_LINE, ' Can not read ' || file_name);
                        END IF;
                   ELSE
                        VTMLOG.error(l_section_name,$$PLSQL_LINE, ' Unable to check if ' || file_name || ' is directory or file ');
                   END IF;
              ELSE
                   VTMLOG.error(l_section_name,$$PLSQL_LINE, file_name || ' does not exist ');
              END IF;
              VTMLOG.debug(l_section_name,$$PLSQL_LINE, 'Leaving ' );
              RETURN retcode;
         EXCEPTION
         WHEN OTHERS THEN
              VTMLOG.SHOW_ERROR_MESSAGE(l_section_name,$$PLSQL_LINE);
              RAISE;
         END isExist;
         PROCEDURE foobar(feedname VARCHAR2)
         IS
                    retval PLS_INTEGER;
            BEGIN
              /* implementation omitted */
              retval := isExist('feed.txt',false);
         EXCEPTION
              WHEN OTHERS THEN
                   RAISE;
         END foobar;
         * Function Name:- canread
         * Description  :-This function checks the file will give any error or not while reading
         FUNCTION canread (FILE IN VARCHAR2)
              RETURN NUMBER AS LANGUAGE JAVA NAME 'com.myCompany.myApp.bulk.FileUtil.canRead (java.lang.String) return int';
         * Function Name:- is_exist
         * Description  :-This function checks the existance of the filein the required folder
         FUNCTION is_exist (FILE IN VARCHAR2)
              RETURN NUMBER AS LANGUAGE JAVA NAME 'com.myCompany.myApp.bulk.FileUtil.exists (java.lang.String) return int';
         * Function Name:- isDirectory
         * Description  :-This function checks the name provided by the user is a directory or not
         FUNCTION isDirectory (FILE IN VARCHAR2)
              RETURN NUMBER AS LANGUAGE JAVA NAME 'com.myCompany.myApp.bulk.FileUtil.isDirectory (java.lang.String) return int';
         * Function Name:- isFile
         * Description  :-This function checks the name provided by the user is a file or not
         FUNCTION isFile (FILE IN VARCHAR2)
              RETURN NUMBER AS LANGUAGE JAVA NAME 'com.myCompany.myApp.bulk.FileUtil.isFile (java.lang.String) return int';
    END VSAMPLE_2;
    /

    Hi,
    I am afraid that according to the error message, it seems that this issue is mainly related to third-party, since issues using oracle database are not supported here, you could consider posting this issue in its website to get supports.
    In addition, you could mark any reply as answer if it is helpful.
    Thanks for your understanding.
    Regards.
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