I have just installed Oracle SQL Developer and I am trying to connect to HR Database for the first time. I tried default username "System" and password "system", "sys", "oracle" but none of them are working. I am using Arch Linux. The Screenshot of the error is attached as well. The Error message is
Status : Failure -Test failed: IO Error: The Network Adapter could not establish the connection (CONNECTION_ID=ZrfViTiuQUyVFaAIdM2Sxg==)
What you may know as a distinct "database" in other db products is known as a "schema" in Oracle. You are trying to connect to the HR schema rather than the HR database.
A schema has an owner (user). To "connect to a schema" you must connect as the schema's owner. So, the Username you should use is HR - not SYSTEM or anything else. Also, the (default) password for this user is HR.
The "Name" field is for the name you want to give to this connection; most likely it should also be HR. It is asking you for a "name" because you are only setting up a connection in SQL Developer; you may create different connections, with different settings, to the same schema! In your case though you probably just want one connection to HR for now, and it makes sense to name the connection HR as well.
You may run into additional problems. First, in more recent versions, the Oracle database you download and install may not include the HR schema; you may need to add it after the fact.
Second, you may need to use a Service name rather than a SID - depending on your db version. And you may need to learn about "container" and "pluggable" databases, unless you installed the database with the non-CDB option; the default is the CDB (multi-tenant) option.
Related
I have a java application which runs on IBM i. It creates connection to AS400 database using jdbc. It does not specify the database name in JDBC connection URL, means it creates connection to default system database associated with *SYSBAS.
Now I want my application to run on iASP. When running on iASP it fails to connect to database.
IBM i documentation says that we must specify RDB name in "database name" property of jdbc connection URL to connect.
problem here is that,
IBM i documentation says by default RDB name of iASP group is same as primary iASP device name in iASP group. But it can be assigned different name.
I am able to retrieve iASP group name and iASP device name programmatically using JTOPEN(by calling API QUSROBJD). Which means my application will work in default scenario. But when RDB name is assigned different name then my application may fail. I want to retrieve RDB name associated with iASP.
How can I retrieve correct RDB name for an iASP?
I tried using API QUSRJOBI, but it is returning database name as blank.
There are two types of Auxiliary Storage Pool (ASP) on IBM i: System ASPs and independent ASPs (iASP). On DB2 for i, all libraries in the system ASP are treated as a single database and you can qualify tables with a schema name to access a tables in a specific library. According to the documentation that I found, each new iASP creates a new database, and these can be queried in QSYS2.SYSCATALOGS. So you will need a connection to the system database and, from that, you can find the database name and connect to each iASP that you need a connection to. Unfortunately I cannot test this as I do not have an iASP available to me.
I need to connect to High Availability (HA) / Desaster Recovery (DR), also known as HADR, enabled SQL server 2012 using AD account from Java on Linux.
integratedSecurity is not an option since it runs on Linux
I can not use the jTDS JDBC driver since it does not support HADR cluster (no support for multiSubnetFailover=true)
jTDS actually works with username, password and domain connection string parameters, but times out 25% of the time.
So it seems I'm stuck with MS SQL JDBC driver but I can't make it work with just the username/password credentials, as I'm trying to solve this without Kerberos.
It must be possible to do it (in theory), since jTDS can actually do it!
I found that driver version 6.0 has property authentication=ActiveDirectoryPassword so it looked very promising, but a SQL connection string like
jdbc:sqlserver://server:port;database=DB;authentication=ActiveDirectoryPassword;username=name;password=PASSWORD
even trying with DOMAIN\username for username or user property, isn't working.
The docs says its for
using an Azure AD principal name and password
but it would just make my life so much easier.
The error I get is
Login failed for user ''
and shows empty user, but stepping through the decompiled code I can see the username and password values are being loaded into variables.
Any solution for this? I take any AD username/password connection to HADR SQL server 2012 that is pure JAVA.
I am trying to configure DataSources with WebLogic 10.3 and database is MySQL Server 5.5 , On entering the following
Driver Class Name ="com.mysql.jdbc.Driver"
url =jdbc:mysql://localhost:3306/weblogicdb
Database User Name =root (User name of Database MySql Server)
Password =123(Password name of Database MySql Server)
Confirm Password =123
and on clicking TestConfiguration, I get the following error.
Connection test failed.
Message icon - Error Unknown database 'weblogicdb'<br/>com.mysql.jdbc.SQLError.createSQLException(SQLError.java:930)
<br/>com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2864)
<br/>com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:806)
<br/>com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3263)
<br/>com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1176)
<br/>com.mysql.jdbc.Connection.createNewIO(Connection.java:2638)
<br/>com.mysql.jdbc.Connection.<init>(Connection.java:1525)
<br/>com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:260)
<br/>com.bea.console.utils.jdbc.JDBCUtils.testConnection(JDBCUtils.java:505)
<br/>com.bea.console.actions.jdbc.datasources.createjdbcdatasource.CreateJDBCDataSource.testConnectionConfiguration(CreateJDBCDataSource.java:369)
<br/>sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<br/>sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
<br/>sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)<br/>java.lang.reflect.Method.invoke(Method.java:597)
<br/>org.apache.beehive.netui.pageflow.FlowController.invokeActionMethod(FlowController.java:870)
<br/>org.apache.beehive.netui.pageflow.FlowController.getActionMethodForward(FlowController.java:809)
<br/>org.apache.beehive.netui.pageflow.FlowController.internalExecute(FlowController.java:478)
<br/>org.apache.beehive.netui.pageflow.PageFlowController.internalExecute(PageFlowController.java:306)
<br/>org.apache.beehive.netui.pageflow.FlowController.execute(FlowController.java:336)
<br/>org.apache.beehive.netui.pageflow.internal.FlowControllerAction.execute(FlowControllerAction.java:52)<br/>...
I was looking into many blogs and previously asked questions, where they it could be because of username and password being incorrect. But that is not the issue in my case, I have rechecked it. on using the same username and password, I was able to log into my MySQL database.
Kindly help me in configuring the system.
Error stack clearly says that:
Message icon - Error Unknown database 'weblogicdb'
It seems you have input a wrong database name.
You might be succeeding with username/passwords to MySQL server.
But the server might have multiple databases in it and 'weblogicdb' is not the correct database name you are trying to connect to.
To see what databases the MySQL Server has in it, execute the following command either using java or any other MySQL clients like MySQL command line, SQLyog, PHPMyAdmin etc.
show databases();
This statement should result all the databases available.
Identify the appropriate one for your program and use the same in your code.
To connect through java to execute the above statement, db url should be:
url =jdbc:mysql://localhost:3306/?user=usernamevalue&password=passwordvalue
this is the error I get when I'm trying to connect to my local postgresql db:
Cannot connect to database [default]
this is the database configuration. I'm convinced that there is not typo (fat finger error):
db.default.url="postgres://localhost:5432/myproject/"
db.default.user="postgres"
db.default.pass="mypassword"
db.default.driver="org.postgresql.Driver"
db.default.initSQL="SELECT 1"
where is the problem? with pgAdmin I can connect easily
p.s.
I'm using ubuntu. I've noticed that in order to change to postgres user
I must use "su", otherwise it fails changing the current user.
is that has something to do with play! failure to connect my db?
thanks
There might be two things wrong or at least dubious in your setup.
First: The postgres:... URL syntax is not a plain JDBC URL. This format is not understood by the PostgreSQL JDBC driver. See this answer to a similar problem.
Second: You are trying to use the PostgreSQL superuser account for Play. The superuser account should be used only for administrative work, but not "normal" work. Especially not for work which includes public access to the DB via some webfrontend. Any SQL-Injection attack gives the attacker the golden key to your database - including the nuke to wreck your complete DB cluster at once or install any backdoor into you DB server.
So I recommand, that you create a new user which you configure in your Play! settings.
That said: The default password for the postgres user is not set on Ubuntu. This setup allows login to the DB user only from the same OS user. How you can fix this is explained in this answer.
If these two tips don't help: The error you quoted is very vague. There must be more detailed error logs somewhere. Please find them and attach them to your question with the "edit" button.
This is not an answer directly to your question, but I had the same error message and came here via Google. Using Scala Play 2.3, I had
db.default.driver=org.postgresql.Driver
db.default.url="jdbc:postgresql://127.0.0.1:5432/noob_development"
db.default.logStatements=true
which needed to be
db.default.driver="org.postgresql.Driver"
db.default.url="jdbc:postgresql://127.0.0.1:5432/noob_development"
db.default.logStatements=true
I accidentally left the quotes around the driver name out. Now it works perfectly.
here is my conf, it works:
db.default.url="jdbc:postgresql://127.0.0.1:5432/dbname"
db.default.driver="org.postgresql.Driver"
just add the jdbc: before postgresql in db.default.url.
If I start the HSQLDB in server mode using my Java code, the server starts without any problem. However, when I try to connect to the same either through the Java code or through the HSQLDB DatabaseManagerSwing; I am unable to connect.
I started the server with user=conn1 and password=conn1 in memory-only mode. But when connecting to the server it gave me following exception:
java.sql.SQLInvalidAuthorizationSpecException: invalid authorization specification - not found: conn1
I can only connect by giving user=SA and blank password. I am using HSQLDB 2.2.5 and JRE1.7 on Windows7 machine.
Can someone tell me where am I doing wrong?
If you try these server properties with recent versions of HyperSQL, you will probably get an error message as your server properties are not correct. The properties "server.username" and "server.password" are not valid. And the dbname.0 property must be in lowercase.
If you want to create a server database with a user name other than SA, you can append the user and password to the database path:
server.database.0 = file:E:/DB/myDB;user=testuser;password=testpw
server.dbname.0 = mydb
After the server is shutdown, there is no need to include the user and password. The credentials are used only to create the database. After that, the credentials are checked when a connection is made to the server.
2020 update with additional information due to recent questions in comments:
The user name and password specified for database.0 are taken into account only when a new database is created by starting the server. If the database files exist before starting the server, user name and password are unnecessary and are simply ignored.
Other settings for a new database, such as hsqldb.tx=mvcc, can be appended to the database.0 string.
You must have properties for database.0 for your server. You can add properties for database.1 if your server is serving two different databases.
The file path specified for database.0 is hidden from the users that connect to the server. Only the dbname.0 value is used for access, for example:
DriverManager.getConnection("jdbc:hsqldb:hsql://localhost/mydb;uer=testuser;password=testpw")
In the getConnection call, it is better to state the user and password separately to keep the code clear:DriverManager.getConnection("jdbc:hsqldb:hsql://localhost/mydb", "testuser", "testpw")
See the Guide http://hsqldb.org/doc/2.0/guide/dbproperties-chapt.html for all the details.
Appears the problem you were running into (at least initially) is that, for HSQL in memory databases, if it's the "first" in memory database (i.e. process just started), the username "has to be" sa (username "sa" is not case sensitive, or it can be empty username, which implies the "default" which is also sa). You can use a blank password, or specify a password. Based on some trial and error, if you want to reconnect to the same (in memory) DB later, you'll have to re-use the same password (blank or otherwise). If you want to use a user other than SA you'd probably have to first connect to your database using SA and execute some "create user" type commands to create new users. Then reconnect using that user (assuming your DB is all in memory).
You can use multiple different in-memory databases (if that's what you're trying to accomplish by specifying a different user) like this:
// change the MySpecialTestDb String for multiple different in memory databases
// or reuse the same value
// to reconnect to a previously created in memory database [i.e. within the same process previously].
String DB_CONNECTION_STR = "jdbc:hsqldb:mem:MySpecialTestDb";
String DB_USERNAME_STR = "sa";
String DB_USERNAME_PASSWORD = "";
DriverManager.getConnection(DB_CONNECTION_STR, DB_USERNAME_STR, DB_USERNAME_PASSWORD);
Each new database you create follows the same system (it must be initial user SA and "adopts" whatever first password you give).
ref: http://www.hsqldb.org/doc/1.8/guide/guide.html#advanced-chapter
Or if you want to just "reset" an in memory database, like between each unit test, see here.
Note that documentation also says "...This feature [default user SA] has a side effect that can confuse new users. If a mistake is made in specifying the path for connecting to an existing database, a connection is nevertheless established to a new database. For troubleshooting purposes, you can specify a connection property ifexists=true ..."
Point no 1) Whenever you create a DB, you have to specify the username and password. You can keep it both blank; But same username and password has to be used while connecting to server.
If you observe script file of your DB, you can see commands like :-
CREATE USER "usr" PASSWORD DIGEST '9003d1df22eb4d3820015070385194c8'
ALTER USER "usr" SET LOCAL TRUE
GRANT DBA TO "usr"
I had created DB with user name "usr" so it appeared in script file in those commands. Now while starting server I do not need to specify user name or password. It will IGNORE this information.
While connecting server you have to give exactly same username and password, you gave while creating DB.
Point no 2)
Make sure that there is no space in path of your DB files. If there is space then enclose the whole path in double quotes.
I struggled a lot to find out this silly mistake of mine.
Now if I start the server wil below command it starts correctly
1) Go to lib of HSQL
cd C:\Users\owner\Documents\Java Project\hsqldb-2.2.9\hsqldb\lib
Then give command
java -cp hsqldb.jar org.hsqldb.Server -database.0 file:"C:\Users\owner\Documents\Java Project\hsqldb-2.2.9\TmpDBLocation\myKauDB" -dbname.0 xdb
2) In other command prompt went to lib location
cd C:\Users\owner\Documents\Java Project\hsqldb-2.2.9\hsqldb\lib
Then connected the Swing UI of HSQL DB by giving command in other command prompt window
java -cp hsqldb.jar org.hsqldb.util.DatabaseManagerSwing --driver org.hsqldb.jdbcDriver --URL jdbc:hsqldb:hsql://localhost/xdb --user "usr" --password ""
In my brand new 2.3.2 installation, after clicking bin/runServer.bat, I managed to connect (with Squirrel) using:
URL: jdbc:hsqldb:hsql://localhost:9001
User: SA
Password: <blank>