Error 1130: #HY000 Host ‘hostname’ is not allowed to connect to this MySQL server

The below are the most common errors, when connecting remotely to MySQL Server from MySQL Client.

Error 1130: #HY000 Host ‘hostname’ is not allowed to connect to this MySQL server

Cause: The host that you are using to connect MySQL Server does not have privilege

Solution: Grant required privileges
GRANT ON *.* TO ‘user’@'hostname' IDENTIFIED BY ‘password’ ;
For ex:- if you are connecting as root then use below syntax
Mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@’test-server’ IDENTIFIED BY ‘test’ ;

Now you should able to see a new user in mysql.user table.
Mysql> select host,user from mysql.user;
+------+---------------------------
| User | Host
+------+---------------------------
| root | test-server
+------+---------------------------

If you want to grant privilege to a host on specific database try below syntax.
mysql> GRANT ALL PRIVILEGES ON test.* TO 'root'@’test-server’ IDENTIFIED BY ‘test’ ;

Error 1130: #HY000 Host ‘IP address’ is not allowed to connect to this MySQL server

Cause: The user host IP address is not allowed to connect to MySQL Server

Solution: Grant the privilege to host IP address
mysql> GRANT ALL PRIVILEGES ON *.* TO ‘user’@’IPADDRESS’ IDENTIFIED BY ‘password’ ;
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@’x.x.x.x’ IDENTIFIED BY ‘test’ ;

ERROR 1045 (28000): Access denied for user 'root'@hostname' (using password: NO)

Cause: The root user is password protected and you need to use password parameter in order to connect

Solution: - Try to connect MySQL Server using below command
# mysql -u root -h test-server –p

ERROR 1045 (28000): Access denied for user 'root'@hostname' (using password: YES)

Cause: The 'root'@hostname' doesn’t have privilege to connect MySQL Server

Solution: - Grant permission using below command.
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@hostname' IDENTIFIED BY ‘password’

Regards,
Satishbabu Gunukula
http://www.oracleracexpert.com

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock'

I was working on MySQL Server setup and modified the default location of MySQL datadir. After I restart the MySQL, I was unable to connect and receiving below error.

#mysql –u root
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock'

Cause:
When we restart mysql server, it creates a mysql.sock file under socket variable path. The default location is /var/lib/mysql/mysql.sock.

I have updated the new location in /etc/my.cnf file.

[mysqld]
datadir=/opt/mysql/data
socket=/opt/mysql/mysql.sock

I can see the new file under /opt/mysql/mysql.sock, but I still receive the same error and not able to connect to MySQL.

I have modified the socket path under [mysqld], but the parameter was missing under [client] section. When I was trying to connect using MySQL client, it could not able to find mysql.sock file.

Solution:
Add [client] section in /etc/my.cnf

[client]
socket=/opt/mysql/mysql.sock

I have restarted MySQL in order to take effect of new changes in my.cnf

# service mysql stop
# service mysql start

MySQL Client able to find mysql.sock file and I was able to connect.

[root@iwebsql etc]# mysql -u root
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.5.21 MySQL Community Server (GPL)

Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

If you don’t want to restart mysql then use below command to tell client to use /opt/mysql/mysql.sock file

#mysql -u root –socket=/opt/mysql/mysql.sock

You may receive the same error, if mysqld didn't start. You can try below solution.

# /etc/init.d/mysqld start
# mysql –u root

Regards
Satishbabu Gunukula
http://www.oracleracexpert.com

Oracle "Hyperion EPMA Server" service is not coming online

Recently I have encountered this issue with Oracle Hyperion. When we restarted Hyperion server, the “Hyperion EPMA Server” service is not coming online and application is down.

Here are the Errors from event.log

EPMA_Server
[EPMA Server Startup] ERROR SVR_ERR_PROCESSMGR_CANT_INIT_SESSIONMGR:Cannot initialize the Session Manager.Hyperion.DimensionServer.Interface.Exceptions.EPMAServiceException: Cannot initialize the Session Manager. ---> Hyperion.CommonServices.Exceptions.SessionManagerException: An error was encountered by the CAS Security Provider: Class: java.lang.NullPointerException
StackTrace:

at Hyperion.DimensionServer.SessionManager.CasSecurityProvider.GetDataBaseDetails(String& vendor, String& serverName, Int32& dbPort, String& dbName, String& username, String& password, String& jdbcUrl)
at Hyperion.DimensionServer.SessionManager.SessionManager.InitializeSqlConnectionString()
at Hyperion.DimensionServer.SessionManager.SessionManager.Initialize(String configFileName, Boolean restorePastInstanceSessions, Boolean enableCaching)
--- End of inner exception stack trace ---


Hyperion EPMA DimmensionServer
Service cannot be started. Hyperion.DimensionServer.Interface.Exceptions.EPMAServiceException: Cannot initialize the Session Manager. ---> Hyperion.CommonServices.Exceptions.SessionManagerException: An error was encountered by the CAS Security Provider: Class: java.lang.NullPointerException
StackTrace:
at Hyperion.DimensionServer.SessionManager.CasSecurityProvider.GetDataBaseDetails(String& vendor, String& serverName, Int32& dbPort, String& dbName, String& username, String& password, String& jdbcUrl)
at Hyperion.DimensionServer.SessionManager.SessionManager.InitializeSqlConnectionString()
at Hyperion.DimensionServer.SessionManager.SessionManager.Initialize(String configFileName, Boolean restorePastInstanceSessions, Boolean enableCaching)
--- End of inner exception stack trace ---

The event log is no much helpful. But note that the Hyperion EPMA Service will not come up if you have any issues with database. Check the logs to see any “ORA- “errors .

I found below error in EssbaseAdminServices0.log
#### <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <> <> <> <1329242417925> ORA-28001: the password has expired

Now it’s clear that Database user password expired.

SQL> select USERNAME, ACCOUNT_STATUS from dba_users where USERNAME = ‘SHARED_SERVICES’;

USERNAME ACCOUNT_STATUS
------------------------------ --------------------------------
SHARED_SERVICES EXPIRED(GRACE)

Do not change the password. If you change the password then you need to re-configure the Hyperion service in order to use the new password.

If you know the password then set the using below command.
SQL> Alter user SHARED_SERVICES identified by ‘xxxxxx’;

If you don’t know the password then reset the password following below steps
SQL> select password from sys.user$ where name='SHARED_SERVICES';

PASSWORD
------------------------------
61266722B44D5BG418

SQL> alter user QWERTY identified by values '61266722B44D5BG418’;
User altered.

Also make sure to modify PASSWORD_LIFE_TIME to “UNLIMITED” for DEFAULT or User profile that you are using

SQL> alter profile default limit PASSWORD_LIFE_TIME unlimited;
Profile altered.

Regards,
Satishbabu Gunukula
http://www.oracleracexpert.com