I have a Production Database as Azure Database for MYSQL. But its connection failed often. I cant find the issues. Can any one please tell me the reason and how to solve this issues?
This failed connection occured often, due to blocking hosts. Some document mentioned need to flush hosts on Azure MYSQL Database server.
After i have some changes on Azure Database for MYSQL server, Its working fine. There is no failed connection.
First i tried to connect Azure Database for MYSQL Server from my local linux machine. But it shown Access denied. Then i did reset my password in Azure portal. Then i could logon the Azure MYSQL server through my local linux machine.
Once logged in to Azure Server, I have used below commands to solve this issue,
FLUSH HOSTS;
FLUSH PRIVILEGES;
Finally resolved this error.
Related
I am remotely debugging my application with azure and VS2019 and it works fine until I have to connect to the database.
Then I get the following error. "The underlying provider failed on Open."
On the other hand, if I debug locally everything works correctly.
Do you have to activate any permission in Azure or in the project config so that the database can be accessed remotely?
Right after the connection string I have put the following.
_context.Database.Connection.Open ();
So it returns the following error to me:
"Unable to connect to any of the specified MySQL hosts".
All this locally does not happen to me. Only when trying to debug remotely.
According to your description, we can ensure that the remote debug function of vs2019 is normal. An error is reported in this _context.Database.Connection.Open (); code. Obviously, the program cannot connect to the mysql database server.
Troubleshooting:
First make sure that your mysql database server can be accessed using tools (such as Mysql Workbench).
Using tools to ensure that the database is accessible is to ensure that the firewall of your database server is open (mysql in azure or other server).
Check the connectionstring of mysql in the released program. According to your error message, it is likely that the connection string is used incorrectly.
I am trying to install Informatica Server.
During domain configuration repository database information I get database connectivity error.
Error: Test Connection Failed. Correct the database connection information and test the connection again.
But when I connect using same details through Oracle SQL Developer to this database, it works fine.
I am using service name and port number field from the TNS File, still getting this error.
I think you can check tomcat log, catalina.out logs. This will help on finding out real issue.
Go to command prompt and type ping localhost and see if its responding anything. May be you can use IP and check host file.
I am currently accessing/connecting to a remote database through VPN and I have no issues querying on the remote database. I want to create a db-link to connect my local db to the remote database in order to join certain tables. Sadly, I am getting error ORA-12545.
This is my db-link code:
CREATE DATABASE LINK DB_LINK
CONNECT TO REMOTE_USER_NAME
IDENTIFIED BY PASSWORD
USING '(DESCRIPTION=(CONNECT_DATA=(SID=test_SID))(ADDRESS=(PROTOCOL=TCP)(HOST=HOST_NAME.com)(PORT=1521)))'
I don't have an Oracle client installed on my machine so I am using the full description. There are no issue accessing both our db and the remote db without an Oracle client installed so I assume this is not the problem.
My ping to the remote address returned TTL expired in transit even though the VPN is connected. This seems a bit weird but I am not entirely sure if this is the problem.
I must be missing a crucial step. Any advice is appreciated.
I'm new to working with AWS and RDS. What I'm trying to do is setup an Oracle DB instance on RDS, that part is fine but when I try to connect to it via an application I get various errors. Depending on the application I get a couple of different errors.
[Local computer trying to connect to RDS directly]
LinqPad - Connection Error: Server did not respon within the specified timeout interval. (I get this on both the Direct and OCI connection modes)
SQL Developer - IO Error: The network adapter could not establish the connection.
[EC2 instance in same VPC]
LinqPad - Connection Error: NET: Connection was refused with error ORA-12504
(I get this on both the Direct and OCI connection modes also)
I've done some research and it mostly points that the VPC isn't setup correctly, but I'm able to connect to my EC2 instance fine though.
Oddly enough, I did have one fluke incident where from my local computer it did connect, but as soon as I tried the test again I got more errors.
Any help, or new directions to look would be greatly appreciated.
Will provide more information if needed also. Wasn't sure what to post settings wise. Thanks in advance.
Hoping someone else has already encountered this and has a solution...
I'm trying to install the AppFabric Beta 1 caching service, on a virtual Windows Server 2008 (CacheServer1). My cache configuration information will be held in a SQL Server database on a separate server (SQLServer). As AppFabric only supports Integrated Security for SQL Server, both servers are in the same domain, and I'm installing using an account that has db_owner rights to my VelocityConfig database.
When I run the AppFabric installer and get to entering the connection string for my SQL server, I put in the server name, but when I click the combo box to get the list of databases from the server, it thinks for a minute and then I get a timeout error.
Both servers can ping each other, and I've created a .UDL file on CacheServer1 under the same user, which can connect successfully to SQLServer and retrieve a list of databases.
Can anyone suggest what I need to do to get the installer to succeed?
The solution I found to this was to install the SQL 2008 Client Connectivity bits on CacheServer1, once this was installed I could get a list of databases. Still can't get AppFabric to install successfully but that's another problem for another question I think...
To ensure that there is no network/DNS issues, can you try the following:
1. Use IP address instead of hostname.
2. Are you able to connect to sql server via sql server mgmt studio running on CacheServer1?