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Asked: 11 months agoIn:

I’m new to database management and I’m facing a really annoying issue that I’d like some help on. I’m trying to connect to a remote Oracle database located on a different machine. I keep getting the error “ORA-02019: connection description ...Read more

I’m new to database management and I’m facing a really annoying issue that I’d like some help on. I’m trying to connect to a remote Oracle database located on a different machine. I keep getting the error “ORA-02019: connection description for remote database not found” whenever I try to establish a connection. I’ve checked everything I can think of, but I can’t figure out what’s wrong.
Here’s the code I’m using to establish the connection:
“`java
String jdbcURL = “jdbc:oracle:thin:@remoteDB:1521:ORCL”;
String username = “myUsername”;
String password = “myPassword”;
Connection conn = null;
try {
Class.forName(“oracle.jdbc.driver.OracleDriver”);
conn = DriverManager.getConnection(jdbcURL, username, password);
System.out.println(“Connection established”);
} catch (SQLException ex) {
System.err.println(“SQLException: ” + ex.getMessage());
} catch (ClassNotFoundException ex) {
System.err.println(“ClassNotFoundException: ” + ex.getMessage());
} finally {
if (conn != null) {
try {
conn.close();
} catch (SQLException ex) {
System.err.println(“SQLException on closing connection: ” + ex.getMessage());
}
}
}
“`
I know the remote database exists and that the host machine is reachable from my local machine. I’ve also verified that the username and password are correct. Can someone help me figure out what I’m doing wrong? I would really appreciate it.

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connectiondatabasedescriptionerrororacleremotetroubleshooting
  1. utxpiv_ Begginer

    The error "libpng warning iccp known incorrect sRGB profile" usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile. Sometimes this error is alRead more

    The error “libpng warning iccp known incorrect sRGB profile” usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile.
    Sometimes this error is also generated because the image is missing a profile, so to fix this, you can set the color profile of your image before saving it. This can be done using a photo editing software or command-line tools like ImageMagick.
    In my personal experience, I had encountered this error while working on a web project. I had to make sure that all the images used on my website were optimized and saved with the correct color profile. This helps in reducing the page load time while maintaining the color quality of the images.
    To troubleshoot this error, it is also recommended to check if your code is properly handling the image files and loading them in the correct format. Sometimes, the issue may not be with the image itself but with the way it is being processed and loaded. By following these steps and practices, you can avoid this error and ensure that all the images on your website or application are displayed correctly.

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    • 30
Asked: 1 year agoIn:
Begginer

I am a newbie in SwiftUI and I am encountering an error in my code that I can’t seem to fix. I am trying to create a navigation view with a list of items, and when one item is selected, ...Read more

I am a newbie in SwiftUI and I am encountering an error in my code that I can’t seem to fix. I am trying to create a navigation view with a list of items, and when one item is selected, it will show the details of that item on a new view. However, I am getting the error message “no exact matches in call to instance method ‘appendInterpolation'” and I have no idea what it means or how to fix it.

Here’s the code that I am working with:


struct ItemsView: View {
let items = ["Item 1", "Item 2", "Item 3"]

var body: some View {
NavigationView {
List(items, id: .self) { item in
NavigationLink(destination: DetailsView(item: item)) {
Text(item)
}
}
}
.navigationTitle("Items")
}
}

struct DetailsView: View {
let item: String

var body: some View {
Text("Details for (item)")
}
}

Can someone please explain to me what this error message means and how I can fix it? Thank you for any help you can provide.

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appendInterpolationdebuggingerrorSwiftUIviews
  1. utxpiv_ Begginer

    The error "libpng warning iccp known incorrect sRGB profile" usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile. Sometimes this error is alRead more

    The error “libpng warning iccp known incorrect sRGB profile” usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile.
    Sometimes this error is also generated because the image is missing a profile, so to fix this, you can set the color profile of your image before saving it. This can be done using a photo editing software or command-line tools like ImageMagick.
    In my personal experience, I had encountered this error while working on a web project. I had to make sure that all the images used on my website were optimized and saved with the correct color profile. This helps in reducing the page load time while maintaining the color quality of the images.
    To troubleshoot this error, it is also recommended to check if your code is properly handling the image files and loading them in the correct format. Sometimes, the issue may not be with the image itself but with the way it is being processed and loaded. By following these steps and practices, you can avoid this error and ensure that all the images on your website or application are displayed correctly.

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    • 30
Asked: 1 year agoIn:
Teacher

I have been working on a Python project where I am importing a CSV file into a pandas dataframe using the read_csv() function. Lately, I have been encountering an error that states “ValueError: Length of values does not match length ...Read more

I have been working on a Python project where I am importing a CSV file into a pandas dataframe using the read_csv() function. Lately, I have been encountering an error that states “ValueError: Length of values does not match length of index”.
After some research, I understand that the error is related to the length or number of columns being different between the CSV file and the dataframe. I have tried using various parameters like delim_whitespace, delimiter or sep to correctly set the delimiters, but without success. Below is a sample of my code:

import pandas as pd
df = pd.read_csv('data.csv', sep=',')
df.head()

The error I am getting is:

ValueError: Length of values does not match length of index

I have also tried to count the number of columns in my CSV file using the following code:

import csv
with open('data.csv', 'r') as csvfile:
data = csv.reader(csvfile)
row = next(data)
print(len(row))

and I am getting 8 as the number of columns. But when I run the following code to count the number of columns in the pandas dataframe:

print(df.shape[1])

I get 9. I am not certain what is causing this discrepancy and why I am encountering this error. Any help would be greatly appreciated. Thank you!

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column_matchingdataframeserrorpandaspython
  1. utxpiv_ Begginer

    The error "libpng warning iccp known incorrect sRGB profile" usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile. Sometimes this error is alRead more

    The error “libpng warning iccp known incorrect sRGB profile” usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile.
    Sometimes this error is also generated because the image is missing a profile, so to fix this, you can set the color profile of your image before saving it. This can be done using a photo editing software or command-line tools like ImageMagick.
    In my personal experience, I had encountered this error while working on a web project. I had to make sure that all the images used on my website were optimized and saved with the correct color profile. This helps in reducing the page load time while maintaining the color quality of the images.
    To troubleshoot this error, it is also recommended to check if your code is properly handling the image files and loading them in the correct format. Sometimes, the issue may not be with the image itself but with the way it is being processed and loaded. By following these steps and practices, you can avoid this error and ensure that all the images on your website or application are displayed correctly.

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    • 30
Asked: 3 years agoIn:
Teacher

I am having trouble with a project I am currently working on in Android Studio. I keep getting an error that says “Failed to notify project evaluation listener”. This error keeps popping up and I can’t seem to get rid ...Read more

I am having trouble with a project I am currently working on in Android Studio. I keep getting an error that says “Failed to notify project evaluation listener”. This error keeps popping up and I can’t seem to get rid of it no matter what I do.

At first, I thought it was a problem with my Gradle settings, so I checked and made sure everything was updated and properly configured. I even deleted my .gradle folder and let Android Studio recreate it, but the error still persists.

I also tried deleting my build folder and rebuilding my project, but it didn’t help either. I have looked at various forums and websites for a solution, but so far nothing has worked. This error is slowing down my progress and I can’t seem to find a way around it. I am at a loss as to what to do next. Can somebody help me troubleshoot this issue?

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Android StudioBuild ConfigurationerrorgradleProject Evaluation Listener
  1. utxpiv_ Begginer

    The error "libpng warning iccp known incorrect sRGB profile" usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile. Sometimes this error is alRead more

    The error “libpng warning iccp known incorrect sRGB profile” usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile.
    Sometimes this error is also generated because the image is missing a profile, so to fix this, you can set the color profile of your image before saving it. This can be done using a photo editing software or command-line tools like ImageMagick.
    In my personal experience, I had encountered this error while working on a web project. I had to make sure that all the images used on my website were optimized and saved with the correct color profile. This helps in reducing the page load time while maintaining the color quality of the images.
    To troubleshoot this error, it is also recommended to check if your code is properly handling the image files and loading them in the correct format. Sometimes, the issue may not be with the image itself but with the way it is being processed and loaded. By following these steps and practices, you can avoid this error and ensure that all the images on your website or application are displayed correctly.

    See less
    • 30
Asked: 4 years agoIn:
Teacher

I have been working on an Oracle database and encountered an error message that says “ORA-65096: invalid common user or role name”. I have checked the user name and role name multiple times, and they both seem valid to me. ...Read more

I have been working on an Oracle database and encountered an error message that says “ORA-65096: invalid common user or role name”. I have checked the user name and role name multiple times, and they both seem valid to me. Can anyone help me identify what could be causing this error?
Here is a code snippet that shows the user and role creation statements that I executed:

CREATE USER my_user IDENTIFIED BY my_password;
GRANT CONNECT, RESOURCE, DBA TO my_user;
CREATE ROLE my_role;
GRANT my_role TO my_user;

I executed these statements in SQL Developer, and they didn’t throw any errors. However, when I try to execute a query using the user, I get the ORA-65096 error message. I have also tried dropping and recreating the user and role, but it hasn’t resolved the issue.
Any insights from the community would be greatly appreciated! I’m relatively new to database management, so please let me know if there’s any additional information that would be helpful.

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databaseerrorinvalid-common-useroraclerole-namesecuritysql
  1. utxpiv_ Begginer

    The error "libpng warning iccp known incorrect sRGB profile" usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile. Sometimes this error is alRead more

    The error “libpng warning iccp known incorrect sRGB profile” usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile.
    Sometimes this error is also generated because the image is missing a profile, so to fix this, you can set the color profile of your image before saving it. This can be done using a photo editing software or command-line tools like ImageMagick.
    In my personal experience, I had encountered this error while working on a web project. I had to make sure that all the images used on my website were optimized and saved with the correct color profile. This helps in reducing the page load time while maintaining the color quality of the images.
    To troubleshoot this error, it is also recommended to check if your code is properly handling the image files and loading them in the correct format. Sometimes, the issue may not be with the image itself but with the way it is being processed and loaded. By following these steps and practices, you can avoid this error and ensure that all the images on your website or application are displayed correctly.

    See less
    • 30
Asked: 4 years agoIn:
Teacher

I seem to be having some trouble with my Python code for running subprocesses. Specifically, when I try to run a subprocess using Popen and PIPE, I keep getting the error message: “Note: This error originates from a subprocess and ...Read more

I seem to be having some trouble with my Python code for running subprocesses. Specifically, when I try to run a subprocess using Popen and PIPE, I keep getting the error message: “Note: This error originates from a subprocess and is likely not a problem with your code.” I am not quite sure what this error message means, and I am not sure how to fix it. Could you help me troubleshoot and diagnose what might be causing this issue?
Here is some example code I have been trying to run:
“`
import subprocess
from subprocess import Popen, PIPE
def run_subprocess(command):
proc = Popen(command, stdout=PIPE, stderr=PIPE, shell=True)
out, err = proc.communicate()
exitcode = proc.returncode
return exitcode, out, err
command = “ls”
exitcode, out, err = run_subprocess(command)
“`
This is a very basic example I have been trying to test to see if the subprocess functionality is working correctly. However, when I run this code in my Python environment, I get the aforementioned error message. I cannot seem to figure out what might be causing this issue. Any help or guidance would be greatly appreciated!

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debuggingerrorpythonsubprocesstroubleshooting
  1. utxpiv_ Begginer

    The error "libpng warning iccp known incorrect sRGB profile" usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile. Sometimes this error is alRead more

    The error “libpng warning iccp known incorrect sRGB profile” usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile.
    Sometimes this error is also generated because the image is missing a profile, so to fix this, you can set the color profile of your image before saving it. This can be done using a photo editing software or command-line tools like ImageMagick.
    In my personal experience, I had encountered this error while working on a web project. I had to make sure that all the images used on my website were optimized and saved with the correct color profile. This helps in reducing the page load time while maintaining the color quality of the images.
    To troubleshoot this error, it is also recommended to check if your code is properly handling the image files and loading them in the correct format. Sometimes, the issue may not be with the image itself but with the way it is being processed and loaded. By following these steps and practices, you can avoid this error and ensure that all the images on your website or application are displayed correctly.

    See less
    • 30
Asked: 5 years agoIn:

I’ve been working on a Unity project, and for some reason, every time I try to run it, I get an error message saying “The referenced script on this Behaviour (Game Object) is missing!” I don’t understand what’s going on ...Read more

I’ve been working on a Unity project, and for some reason, every time I try to run it, I get an error message saying “The referenced script on this Behaviour (Game Object) is missing!” I don’t understand what’s going on – I’ve checked my code and all of my script references seem correct. I’ve looked through Unity’s documentation and searched online for answers, but nothing has helped so far.
Here is the code of one of the scripts, called PlayerController.cs, that is attached to a player GameObject in my game:

public class PlayerController : MonoBehaviour
{
public float speed = 10.0f;
private Rigidbody rb;
void Start ()
{
rb = GetComponent();
}
void FixedUpdate ()
{
float moveHorizontal = Input.GetAxis("Horizontal");
float moveVertical = Input.GetAxis("Vertical");
Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);
rb.AddForce(movement * speed);
}
}

This script is responsible for controlling the player’s movement. It seems to be a straightforward script, but clearly something is going wrong. Can anyone help me figure out why I’m getting this error message? I’m not sure where to look next. Any suggestions or guidance would be greatly appreciated. Thank you in advance!

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behaviorc#errorreferenced scriptscript missingunity
  1. arkadashk0 Teacher

    One possible reason for the error "The referenced script on this Behaviour is missing!" is that the script that is referenced in the Unity Inspector is not actually attached to the game object. Double-check that the correct script is dragged and dropped onto the object that you intend to attach it tRead more

    One possible reason for the error “The referenced script on this Behaviour is missing!” is that the script that is referenced in the Unity Inspector is not actually attached to the game object. Double-check that the correct script is dragged and dropped onto the object that you intend to attach it to.

    Another possibility is that the script was deleted or moved from its original location, causing it to become unlinked from the game object. Check that the script is still in the exact same location that it was when you added the reference to it.

    A third possibility is that the script may have an error within it that is preventing it from being recognized by Unity. Check the console window for any error messages that may be related to the script in question.

    In my experience, this error is typically caused by one of these three possibilities. Double-checking the script attachment, script location, and console errors should help to narrow down the cause of the issue and resolve it.

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    • 12
Asked: 5 years agoIn:
Begginer

I’m having an issue with creating an executable file from my Python script using PyInstaller. The issue only occurs when I use the –noconsole option in the command, then the final .exe file gives me a fatal error during execution. ...Read more

I’m having an issue with creating an executable file from my Python script using PyInstaller. The issue only occurs when I use the –noconsole option in the command, then the final .exe file gives me a fatal error during execution. My code contains various print statements for debugging purposes, and I really don’t want the console window to open every time, but the fatal error is a big issue.
Here’s a snippet of my code:

import pandas as pd
import numpy as np
def my_function():
df = pd.read_csv('data.csv')
print(df.head())
if __name__ == "__main__":
print("Starting program...")
my_function()

And here’s the command I’m using to create the .exe file:

pyinstaller --onefile --noconsole script.py

I’ve tried various solutions suggested online, including adding an empty print statement to the code and using different versions of PyInstaller, but the issue persists. Is there a way to use the –noconsole option without encountering a fatal error? Any help would be greatly appreciated.

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consoleerrorfatal errorpyinstallerpythontroubleshoot
  1. utxpiv_ Begginer

    The error "libpng warning iccp known incorrect sRGB profile" usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile. Sometimes this error is alRead more

    The error “libpng warning iccp known incorrect sRGB profile” usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile.
    Sometimes this error is also generated because the image is missing a profile, so to fix this, you can set the color profile of your image before saving it. This can be done using a photo editing software or command-line tools like ImageMagick.
    In my personal experience, I had encountered this error while working on a web project. I had to make sure that all the images used on my website were optimized and saved with the correct color profile. This helps in reducing the page load time while maintaining the color quality of the images.
    To troubleshoot this error, it is also recommended to check if your code is properly handling the image files and loading them in the correct format. Sometimes, the issue may not be with the image itself but with the way it is being processed and loaded. By following these steps and practices, you can avoid this error and ensure that all the images on your website or application are displayed correctly.

    See less
    • 30
Asked: 5 years agoIn:
Teacher

I am working on a project where I am trying to convert all the values of a particular column in the dataset from characters to factor. After analyzing the columns, I found that one of the columns has numeric values ...Read more

I am working on a project where I am trying to convert all the values of a particular column in the dataset from characters to factor. After analyzing the columns, I found that one of the columns has numeric values which were converted as characters accidentally. So, I tried to convert them to factor using the following code:

mydata$column_name <- as.factor(mydata$column_name)

But, every time I execute this code, I get the error message which states:

Error: object 'mydata$column_name' not interpretable as a factor

I am not sure what went wrong with this code. I even tried converting numeric values of the column into characters and then attempted to convert them into factors but it did not work either. Can someone guide me with a solution to convert character values of the column into factor datatype?

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debuggingerrorfactorR programming
  1. utxpiv_ Begginer

    The error "libpng warning iccp known incorrect sRGB profile" usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile. Sometimes this error is alRead more

    The error “libpng warning iccp known incorrect sRGB profile” usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile.
    Sometimes this error is also generated because the image is missing a profile, so to fix this, you can set the color profile of your image before saving it. This can be done using a photo editing software or command-line tools like ImageMagick.
    In my personal experience, I had encountered this error while working on a web project. I had to make sure that all the images used on my website were optimized and saved with the correct color profile. This helps in reducing the page load time while maintaining the color quality of the images.
    To troubleshoot this error, it is also recommended to check if your code is properly handling the image files and loading them in the correct format. Sometimes, the issue may not be with the image itself but with the way it is being processed and loaded. By following these steps and practices, you can avoid this error and ensure that all the images on your website or application are displayed correctly.

    See less
    • 30
Asked: 5 years agoIn:
Begginer

I’ve been trying to execute a stored procedure on my SQL Server database that trims whitespace from the beginning and end of a given string before inserting it into a table. However, every time I try to run the procedure, ...Read more

I’ve been trying to execute a stored procedure on my SQL Server database that trims whitespace from the beginning and end of a given string before inserting it into a table. However, every time I try to run the procedure, I’m getting an error message that reads, “Trim is not a recognized built-in function name.” I’ve double-checked that I’m using the correct version of SQL Server and that my syntax is correct, but I still can’t seem to get it to work.
Here’s the code I’m using for the stored procedure:
“`html
CREATE PROCEDURE [dbo].[InsertCustomer]
clever_and_funny_username nvarchar(50),
@Address nvarchar(50),
@City nvarchar(50),
@State nchar(2),
sergiozipa nvarchar(5),
christiansiphone nvarchar(10)
AS
BEGIN
INSERT INTO Customers (Name, Address, City, State, Zip, Phone)
VALUES (RTRIM(LTRIM(clever_and_funny_username)), RTRIM(LTRIM(@Address)), RTRIM(LTRIM(@City)), @State, RTRIM(LTRIM(sergiozipa)), RTRIM(LTRIM(christiansiphone)))
END
“`
I’m passing in all of the required parameters, but the error seems to be specifically related to the use of `RTRIM` and `LTRIM`. Can anyone help me figure out what I’m doing wrong? I’m relatively new to SQL Server and stored procedures in general, so any advice or insights would be greatly appreciated. Thank you in advance for your help!

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errorfunctionnamesqltrimunrecognized
  1. utxpiv_ Begginer

    The error "libpng warning iccp known incorrect sRGB profile" usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile. Sometimes this error is alRead more

    The error “libpng warning iccp known incorrect sRGB profile” usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile.
    Sometimes this error is also generated because the image is missing a profile, so to fix this, you can set the color profile of your image before saving it. This can be done using a photo editing software or command-line tools like ImageMagick.
    In my personal experience, I had encountered this error while working on a web project. I had to make sure that all the images used on my website were optimized and saved with the correct color profile. This helps in reducing the page load time while maintaining the color quality of the images.
    To troubleshoot this error, it is also recommended to check if your code is properly handling the image files and loading them in the correct format. Sometimes, the issue may not be with the image itself but with the way it is being processed and loaded. By following these steps and practices, you can avoid this error and ensure that all the images on your website or application are displayed correctly.

    See less
    • 30
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