connection closed when using cursor and procedure

up vote
0
down vote

favorite

My code is-

        string oracleb = "Data source=HPPRO58; user ID=system; password=deb;";

        conn = new OracleConnection(oracleb);

        //conn.Open();

        conn.Open();

        String x3 = "google";

        String x1 ;

        String x2;

        String s1 = "delete from temp";

        OracleCommand comm = new OracleCommand(s1, conn);

        comm.ExecuteNonQuery();





        OracleCommand comm2 = new OracleCommand();

        String s2 = "cv";

        comm2.Connection = conn;

        comm2.CommandText = s2;

        comm2.CommandType = CommandType.StoredProcedure;

        comm2.Parameters.Add("x", System.Data.OracleClient.OracleType.Number).Value = comboBox1.Text;

        comm2.Parameters.Add("y", System.Data.OracleClient.OracleType.Number).Value = comboBox2.Text;

        comm2.Parameters.Add("z", System.Data.OracleClient.OracleType.Number).Value = x3;

        comm2.ExecuteNonQuery();



        String s3 = "select * from temp";

        OracleCommand comm3 = new OracleCommand(s3, conn);

        OracleDataAdapter MyAdapter3 = new OracleDataAdapter();//adapter acts as interface btw database and dataset(which is collectio of tables)

        MyAdapter3.SelectCommand = comm;

        DataTable dTable3 = new DataTable();//datatable represents a single table in database 

        MyAdapter3.Fill(dTable3);

        dataGridView1.DataSource = dTable3;

        conn.Close();

My error is-

enter image description here

I am trying to run a procedure which has a cursor too.Therefore I am using 3 comm variables.But I am getting the above error.Therefore I was wondering how to solve it.

I have opened the connection in the starting of the function but still it is showing connection is closed.

edit-

my procedure name is cv

new error-
enter image description here

my procedure-

create or replace procedure cv(x in int,y in int,z in varchar)

as

cursor c

is

select email,collegename,cgpa,compname

from student_cv

where (cgpa>=x and yearsofexp>=y) and compname=z;

tem c%rowtype;

begin

open c;

loop

fetch c into tem;

exit when c%notfound;

insert into temp values(tem.email,tem.collegename,tem.cgpa,tem.compname);

end loop;

end;

/

line 59 is-

comm2.Parameters.Add("x", System.Data.OracleClient.OracleType.Number).Value = comboBox1.Text;

edited Nov 9 at 21:09

asked Nov 9 at 20:01

ubuntu_noob

6611530

I see your comm and comm3 are using the conn but your comm2 and comm3 I dont see you setting the conn to use anywhere?
– Brad
Nov 9 at 20:07

Well spotted. That must be the culprit.
– johey
Nov 9 at 20:16

@Brad I did some changes and got new errors. line 59 is comm2.Parameters.Add("x", System.Data.OracleClient.OracleType.Number).Value = comboBox1.Text;
– ubuntu_noob
Nov 9 at 20:21

I dont think your using paramaters right, you need to put the paramater name in the text and set the value by using the paramanter set look here docs.microsoft.com/en-us/dotnet/api/…
– Brad
Nov 9 at 20:32

@Brad I have added the procedure
– ubuntu_noob
Nov 9 at 20:34

|
show 7 more comments

up vote
0
down vote

favorite

My code is-

        string oracleb = "Data source=HPPRO58; user ID=system; password=deb;";

        conn = new OracleConnection(oracleb);

        //conn.Open();

        conn.Open();

        String x3 = "google";

        String x1 ;

        String x2;

        String s1 = "delete from temp";

        OracleCommand comm = new OracleCommand(s1, conn);

        comm.ExecuteNonQuery();





        OracleCommand comm2 = new OracleCommand();

        String s2 = "cv";

        comm2.Connection = conn;

        comm2.CommandText = s2;

        comm2.CommandType = CommandType.StoredProcedure;

        comm2.Parameters.Add("x", System.Data.OracleClient.OracleType.Number).Value = comboBox1.Text;

        comm2.Parameters.Add("y", System.Data.OracleClient.OracleType.Number).Value = comboBox2.Text;

        comm2.Parameters.Add("z", System.Data.OracleClient.OracleType.Number).Value = x3;

        comm2.ExecuteNonQuery();



        String s3 = "select * from temp";

        OracleCommand comm3 = new OracleCommand(s3, conn);

        OracleDataAdapter MyAdapter3 = new OracleDataAdapter();//adapter acts as interface btw database and dataset(which is collectio of tables)

        MyAdapter3.SelectCommand = comm;

        DataTable dTable3 = new DataTable();//datatable represents a single table in database 

        MyAdapter3.Fill(dTable3);

        dataGridView1.DataSource = dTable3;

        conn.Close();

My error is-

enter image description here

I am trying to run a procedure which has a cursor too.Therefore I am using 3 comm variables.But I am getting the above error.Therefore I was wondering how to solve it.

I have opened the connection in the starting of the function but still it is showing connection is closed.

edit-

my procedure name is cv

new error-
enter image description here

my procedure-

create or replace procedure cv(x in int,y in int,z in varchar)

as

cursor c

is

select email,collegename,cgpa,compname

from student_cv

where (cgpa>=x and yearsofexp>=y) and compname=z;

tem c%rowtype;

begin

open c;

loop

fetch c into tem;

exit when c%notfound;

insert into temp values(tem.email,tem.collegename,tem.cgpa,tem.compname);

end loop;

end;

/

line 59 is-

comm2.Parameters.Add("x", System.Data.OracleClient.OracleType.Number).Value = comboBox1.Text;

edited Nov 9 at 21:09

asked Nov 9 at 20:01

ubuntu_noob

6611530

I see your comm and comm3 are using the conn but your comm2 and comm3 I dont see you setting the conn to use anywhere?
– Brad
Nov 9 at 20:07

Well spotted. That must be the culprit.
– johey
Nov 9 at 20:16

@Brad I did some changes and got new errors. line 59 is comm2.Parameters.Add("x", System.Data.OracleClient.OracleType.Number).Value = comboBox1.Text;
– ubuntu_noob
Nov 9 at 20:21

I dont think your using paramaters right, you need to put the paramater name in the text and set the value by using the paramanter set look here docs.microsoft.com/en-us/dotnet/api/…
– Brad
Nov 9 at 20:32

@Brad I have added the procedure
– ubuntu_noob
Nov 9 at 20:34

|
show 7 more comments

up vote
0
down vote

favorite

My code is-

        string oracleb = "Data source=HPPRO58; user ID=system; password=deb;";

        conn = new OracleConnection(oracleb);

        //conn.Open();

        conn.Open();

        String x3 = "google";

        String x1 ;

        String x2;

        String s1 = "delete from temp";

        OracleCommand comm = new OracleCommand(s1, conn);

        comm.ExecuteNonQuery();





        OracleCommand comm2 = new OracleCommand();

        String s2 = "cv";

        comm2.Connection = conn;

        comm2.CommandText = s2;

        comm2.CommandType = CommandType.StoredProcedure;

        comm2.Parameters.Add("x", System.Data.OracleClient.OracleType.Number).Value = comboBox1.Text;

        comm2.Parameters.Add("y", System.Data.OracleClient.OracleType.Number).Value = comboBox2.Text;

        comm2.Parameters.Add("z", System.Data.OracleClient.OracleType.Number).Value = x3;

        comm2.ExecuteNonQuery();



        String s3 = "select * from temp";

        OracleCommand comm3 = new OracleCommand(s3, conn);

        OracleDataAdapter MyAdapter3 = new OracleDataAdapter();//adapter acts as interface btw database and dataset(which is collectio of tables)

        MyAdapter3.SelectCommand = comm;

        DataTable dTable3 = new DataTable();//datatable represents a single table in database 

        MyAdapter3.Fill(dTable3);

        dataGridView1.DataSource = dTable3;

        conn.Close();

My error is-

enter image description here

I am trying to run a procedure which has a cursor too.Therefore I am using 3 comm variables.But I am getting the above error.Therefore I was wondering how to solve it.

I have opened the connection in the starting of the function but still it is showing connection is closed.

edit-

my procedure name is cv

new error-
enter image description here

my procedure-

create or replace procedure cv(x in int,y in int,z in varchar)

as

cursor c

is

select email,collegename,cgpa,compname

from student_cv

where (cgpa>=x and yearsofexp>=y) and compname=z;

tem c%rowtype;

begin

open c;

loop

fetch c into tem;

exit when c%notfound;

insert into temp values(tem.email,tem.collegename,tem.cgpa,tem.compname);

end loop;

end;

/

line 59 is-

comm2.Parameters.Add("x", System.Data.OracleClient.OracleType.Number).Value = comboBox1.Text;

edited Nov 9 at 21:09

asked Nov 9 at 20:01

ubuntu_noob

6611530

My code is-

        string oracleb = "Data source=HPPRO58; user ID=system; password=deb;";

        conn = new OracleConnection(oracleb);

        //conn.Open();

        conn.Open();

        String x3 = "google";

        String x1 ;

        String x2;

        String s1 = "delete from temp";

        OracleCommand comm = new OracleCommand(s1, conn);

        comm.ExecuteNonQuery();





        OracleCommand comm2 = new OracleCommand();

        String s2 = "cv";

        comm2.Connection = conn;

        comm2.CommandText = s2;

        comm2.CommandType = CommandType.StoredProcedure;

        comm2.Parameters.Add("x", System.Data.OracleClient.OracleType.Number).Value = comboBox1.Text;

        comm2.Parameters.Add("y", System.Data.OracleClient.OracleType.Number).Value = comboBox2.Text;

        comm2.Parameters.Add("z", System.Data.OracleClient.OracleType.Number).Value = x3;

        comm2.ExecuteNonQuery();



        String s3 = "select * from temp";

        OracleCommand comm3 = new OracleCommand(s3, conn);

        OracleDataAdapter MyAdapter3 = new OracleDataAdapter();//adapter acts as interface btw database and dataset(which is collectio of tables)

        MyAdapter3.SelectCommand = comm;

        DataTable dTable3 = new DataTable();//datatable represents a single table in database 

        MyAdapter3.Fill(dTable3);

        dataGridView1.DataSource = dTable3;

        conn.Close();

My error is-

enter image description here

I am trying to run a procedure which has a cursor too.Therefore I am using 3 comm variables.But I am getting the above error.Therefore I was wondering how to solve it.

I have opened the connection in the starting of the function but still it is showing connection is closed.

edit-

my procedure name is cv

new error-
enter image description here

my procedure-

create or replace procedure cv(x in int,y in int,z in varchar)

as

cursor c

is

select email,collegename,cgpa,compname

from student_cv

where (cgpa>=x and yearsofexp>=y) and compname=z;

tem c%rowtype;

begin

open c;

loop

fetch c into tem;

exit when c%notfound;

insert into temp values(tem.email,tem.collegename,tem.cgpa,tem.compname);

end loop;

end;

/

line 59 is-

comm2.Parameters.Add("x", System.Data.OracleClient.OracleType.Number).Value = comboBox1.Text;

c# sql oracle visual-studio oracle11g

edited Nov 9 at 21:09

asked Nov 9 at 20:01

ubuntu_noob

6611530

edited Nov 9 at 21:09

asked Nov 9 at 20:01

ubuntu_noob

6611530

edited Nov 9 at 21:09

asked Nov 9 at 20:01

ubuntu_noob

6611530

asked Nov 9 at 20:01

ubuntu_noob

6611530

asked Nov 9 at 20:01

ubuntu_noob

6611530

I see your comm and comm3 are using the conn but your comm2 and comm3 I dont see you setting the conn to use anywhere?
– Brad
Nov 9 at 20:07

Well spotted. That must be the culprit.
– johey
Nov 9 at 20:16

@Brad I did some changes and got new errors. line 59 is comm2.Parameters.Add("x", System.Data.OracleClient.OracleType.Number).Value = comboBox1.Text;
– ubuntu_noob
Nov 9 at 20:21

I dont think your using paramaters right, you need to put the paramater name in the text and set the value by using the paramanter set look here docs.microsoft.com/en-us/dotnet/api/…
– Brad
Nov 9 at 20:32

@Brad I have added the procedure
– ubuntu_noob
Nov 9 at 20:34

|
show 7 more comments

I see your comm and comm3 are using the conn but your comm2 and comm3 I dont see you setting the conn to use anywhere?
– Brad
Nov 9 at 20:07

Well spotted. That must be the culprit.
– johey
Nov 9 at 20:16

@Brad I did some changes and got new errors. line 59 is comm2.Parameters.Add("x", System.Data.OracleClient.OracleType.Number).Value = comboBox1.Text;
– ubuntu_noob
Nov 9 at 20:21

I dont think your using paramaters right, you need to put the paramater name in the text and set the value by using the paramanter set look here docs.microsoft.com/en-us/dotnet/api/…
– Brad
Nov 9 at 20:32

@Brad I have added the procedure
– ubuntu_noob
Nov 9 at 20:34

I see your comm and comm3 are using the conn but your comm2 and comm3 I dont see you setting the conn to use anywhere?
– Brad
Nov 9 at 20:07

Well spotted. That must be the culprit.
– johey
Nov 9 at 20:16

@Brad I did some changes and got new errors. line 59 is comm2.Parameters.Add("x", System.Data.OracleClient.OracleType.Number).Value = comboBox1.Text;
– ubuntu_noob
Nov 9 at 20:21

I dont think your using paramaters right, you need to put the paramater name in the text and set the value by using the paramanter set look here docs.microsoft.com/en-us/dotnet/api/…
– Brad
Nov 9 at 20:32

@Brad I have added the procedure
– ubuntu_noob
Nov 9 at 20:34

|
show 7 more comments

active

oldest

votes

Your Answer

StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});

}
});

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53232568%2fconnection-closed-when-using-cursor-and-procedure%23new-answer', 'question_page');
}
);

Post as a guest

Name

Required, but never shown

active

oldest

votes

draft saved

draft discarded

Thanks for contributing an answer to Stack Overflow!

Please be sure to answer the question. Provide details and share your research!

But avoid …

Asking for help, clarification, or responding to other answers.

Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

Some of your past answers have not been well-received, and you're in danger of being blocked from answering.

Please pay close attention to the following guidance:

Please be sure to answer the question. Provide details and share your research!

But avoid …

Asking for help, clarification, or responding to other answers.

Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Name

Required, but never shown

Name

Required, but never shown

This page is only for reference, If you need detailed information, please check here

搜尋此網誌

Wsrtjtyk