I recently switched to ubuntu and when I installed and tried to create a connection on Oracle SQL Developers 22.2.1 I get a error
Status : Failure -Test failed: IO Error: The Network Adapter could not establish the connection
Ive tried changing the ports and switching between JDK 19,17 and 11 non of them seem to fix the error, all the guides that i can find on this error seem to be specifically for windows.
any help is appreciated and apologies if I have couldnt explain my problem clearly.
Testing connection of server should produce successful but its giving Status : Failure -Test failed: IO Error: The Network Adapter could not establish the connection
[Question posted by a user on YugabyteDB Community Slack]
I am trying out the Yugabyte Cloud free tier. I tried connecting to the Yugabyte database from pgadmin.
I received the following error on the pgadmin console:
C:\Program Files\pgAdmin 4\v6\runtime>"C:\Program Files\pgAdmin 4\v6\runtime\psql.exe" "host='acc
1506a-8831-403c-899d-2084f666305e.gcp.ybdb.io' port='5433' dbname='yugabyte' user='admin' sslmode
='prefer' sslcompression='False' " 2>>&1
psql: error: connection to server at "acc1506a-8831-403c-899d-2084f666305e.gcp.ybdb.io" (34.131.1
55.71), port 5433 failed: FATAL: conversion between WIN1252 and UTF8 is not supported
Any pointers on how to get this resolved?
You need to set your client encoding before running pgadmin. Follow the steps outlined here:
open the cmd
SET PGCLIENTENCODING=utf-8
chcp 65001
psql -h your.ip.addr.ess -U postgres
I am at my wits end!
I have a minimal install of Ubuntu Server 18.04 and OpenJDK 11 (headless).
Downloaded, to a local folder are the java 9+ binaries for Derby (db-derby-10.15.2.0-bin)
Path and Environment settings are all correct!
When I start the server startNetworkServer -h 0.0.0.0, I get an error when doing a simple connect using the ij command line tool
ij> connect 'jdbc:derby://localhost:1527/dbname;create=true';
ERROR XJ041: DERBY SQL error: ERRORCODE: 40000, SQLSTATE: XJ041, SQLERRMC: Failed to create database 'dbname', see the next exception for details.::SQLSTATE: XBM01::SQLSTATE: XJ001
The derby.log file makes reference to:
java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "getenv.SOURCE_DATE_EPOCH")
Looking further into this error, I learned that I somehow need a security.profile. I found this website that seemed to be the answers to my problems. https://www.javacodegeeks.com/2020/04/apache-derby-database-jvm-security-policy.html
Following these pretty straight-forward instructions, I get:
java.security.AccessControlException: access denied
org.apache.derby.shared.common.security.SystemPermission( "engine", "usederbyinternals" )
For the next person who has this strange problem (it seems to happen with some regularity, here's a simple workaround, copied from this FAQ page at Chalmers Institute of Technology:
Q: When we try to create a database in Derby and the database explorer in NetBeans, we get one or more of the following error(s):
An error occurred while creating the database:
java.sql.NonTransientConnectionException: DERBY SQL error: ERRORCODE:
40000, SQLSTATE: XJ041, SQLERRMC: ...
Caused by: java.security.AccessControlException: access denied
("java.lang.RuntimePermission" "getenv.SOURCE_DATE_EPOCH")
A: This is some kind of missconfiguration in the JVM with a very aggressive security policy that doesn't allow applications to fetch the time on the system (since epoch). The solution is to edit ~/.java.policy or [java.home]/lib/security/java.policy and add the following:
grant {
permission java.lang.RuntimePermission "getenv.SOURCE_DATE_EPOCH", "read";
};
If you are on Windows you can read about where this policy file is supposed to be located here;
https://docs.oracle.com/javase/7/docs/technotes/guides/security/PolicyFiles.html
Apache-Derby is a database management system prepared for a multi-user environment, therefore, when you execute the startNetworkServer -h 0.0.0.0 instruction, you are telling it by default to take certain security into account, and that is why it does not let you do an insecure connection such as ij> connect 'jdbc:derby://172.16.17.31:1527/BBDD_server;create=true';
because you are connecting without specifying username and password, so you should either connect by specifying username + password, or start the server without any security:
startNetworkServer -h 0.0.0.0 -noSecurityManager
More help:
https://db.apache.org/derby/docs/10.4/adminguide/tadminnetservopen.html
https://db.apache.org/derby/docs/10.4/adminguide/tadminnetservbasic.html
I am trying to make a new connection on oracle sqldeveloper as sysdba and when i hit test or connect i got this error message:
Status : Failure -Test failed: IO Error: The Network Adapter could not establish the connection
The default port is 1521, but 1522 is often common.
Check if the database is up. database will not be up causing this issue.
or Check if you are able to connect using sqlplus
For linux, one can use the API page found here, and connecting is straight forward. For OS X, one will run into the error when trying to connect to an existing DB2 database:
{ [Error: [IBM][CLI Driver] SQL1042C An unexpected system error occurred. SQLSTATE=58004 ] error: '[node-odbc] SQL_ERROR', message: '[IBM][CLI Driver] SQL1042C An unexpected system error occurred. SQLSTATE=58004\n', state: 'HY000' }
Does anyone know how to fix this problem?
The latest answer on this issue gives you the answer:
export DYLD_LIBRARY_PATH=/Users/.../<project_folder>/node_modules/ibm_db/installer/clidriver/lib/icc
node app.js
You have to do this every time you enter the shell, so you may as well put this in your .profile or .bash_profile.