error when making connection in oracle with new user - oracle-sqldeveloper

Status : Failure -Test failed: ORA-01017: invalid username/password; logon denied
this error is showing when making a connection with a newly created user in oracle sql developer but when connecting to system it is connecting normally

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ORA-12170: TNS:Connect timeout occurred IBM Cloud Pak

I was trying to connect DataStage on IBM Cloud Pak to my Oracle database using 'Oracle (optimize) connection' and kept having the error said:
"The test was not successful.
The assets request failed: Connection failed: {"failure_message":"[The connector could not establish connection to the specified Oracle server. Method: OCIServerAttach, Error code: 12170, Error message ORA-12170: TNS:Connect timeout occurred.]","status":"failure"}". What is the possible reason, and what should I do?

.NET 5 Connecting to MS Access mdb with Odbc

I am trying to connect my web application to an old MS Access mdb file.
I found this page:
https://learn.microsoft.com/en-us/dotnet/api/system.data.odbc.odbcconnection?view=dotnet-plat-ext-6.0
But I can't figure out how to work with connection strings, I keep getting the Error:
'ERROR [08001] [Microsoft][ODBC Driver 18 for SQL Server]MAX_PROVS: Error Locating Server/Instance Specified [xFFFFFFFF].
ERROR [HYT00] [Microsoft][ODBC Driver 18 for SQL Server]Login timeout expired
ERROR [01S00] [Microsoft][ODBC Driver 18 for SQL Server]Invalid connection string attribute
ERROR [08001] [Microsoft][ODBC Driver 18 for SQL Server]A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information see SQL Server Books Online.'
https://www.connectionstrings.com/microsoft-odbc-driver-17-for-sql-server/
Found this page, although I have the 18 driver installed it should only change the 17 -> 18.
My current Connection string looks like this
Driver={ODBC Driver 18 for SQL Server}; Server=.\SQLExpress; AttachDbFilename = D:\temp\datacollector\microfas.mdb; Trusted_Connection=yes;
But I have no idea if I am approaching it the right way. The application will eventually run locally at a customer with a known location of the .mdb file.

Creating a local connection in Oracle SQL developer 12c

Not sure if I'm missing anything.
I'm trying to create a local connection in order to create a new user in Oracle SQL developer 12c. (AVOIDING CDB connection)
After browsing for an hour, came across 2 methods.
Using connection type as "Local/Bequeath"
Throws following error (Status : Failure -Test failed: ORA-01017: invalid username/password; logon denied)
Using connection type as "Basic", Hostname as "localhost", Port as "1521", and Service name as "XEPDB1"
Throws following error (Status : Failure -Test failed: Listener refused the connection with the following error:
ORA-12514, TNS:listener does not currently know of service requested in connect descriptor)
Thanks.

ORA-01017: invalid username/password; logon denied on Pluggable database

I created a local user under a pluggable database. I granted some privileges required to open and use it. I check the username and the password. Still it keep saying invalid username/password.
Step that I take:
1. alter session set container = xxxxpdb
2. alter pluggable database xxxpdb open
3. SQL> alter user #### identified by #### container = current;
User altered. -----i did this one to make sure that i have a correct password
4. connect ###/####XXXXpdb;
ERROR:
ORA-01017: invalid username/password; logon denied
5. Then tried to connect to it this way
$ sqlplus ###/####xxxxpdb
ERROR:
ORA-01017: invalid username/password; logon denied
I am new to container database. I would appreciate any detailed explanation! Thank you.
Based on error message, it looks like the user doesn't exist in PDB.
For an existing user you may get a relevant error related to privilege. For example:
SQL> conn <existing_uname_without_required_privileges>/<upass>#<pdb_name>
ERROR:
ORA-01045: user <uname> lacks CREATE SESSION privilege; logon denied
Warning: You are no longer connected to ORACLE.
SQL>
For a non-existing user, the error you have observed will be returned:
SQL> conn <non_existing_user>/<upass>#<pdb_name>
ERROR:
ORA-01017: invalid username/password; logon denied
SQL>
This OraDoc Page provides the local user related information in CDB.

Why can't pgAdmin III connect to Postgres?

I added a new user to posgresql (amanda) which is the same as my linux system user. At the console, I can open psql just fine -- I don't need a password because I'm already authenticated as amanda. When I try to set up pgAdmin III without a password, I get:
An error has occurred:
01:18:47 PM: Error: Error connecting to the server: fe_sendauth: no password supplied
And if I provide my system password, I get a password error:
An error has occurred:
01:15:30 PM: Error: Error connecting to the server: FATAL: password authentication failed for user "amanda"
FATAL: password authentication failed for user "amanda"
How do I get pgAdmin3 talking to postgres as amanda?
not a real solution but rather a workaround:
connect as command line and update your password hence:
ALTER USER amanda WITH PASSWORD 'your_new_password';