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SQL Server Statistics are small, lightweight objects that describe the distribution of data in a SQL Server table or column. The SQL Server query optimizer uses statistics to estimate how many rows will be returned by parts of your query. This heavily influences the...
When you see this ORA-12560 error on Windows, you need to check these two things before anything else. Make sure the windows service is up and running Make sure your ORACLE_SID is set to the instance name you're trying to connect to If either one or two are not...
Have you ever run into an SSPI error in SQL Server Management Studio (SSMS)? In this blog entry, we will show you 2 ways you can fix your SSPI error in SQL Server. SSPI Error: Cannot connect. The target principal name is incorrect. Cannot generate SSPI context Details...
Most Db2 DBAs administer Db2 at the command line. The command line provides a rich and powerful interface with Db2, and has a lot of options. Many other users may wish to access Db2 at the command line as well. Developers and system administrators are just a few of...
This error is rather common; however, the following error is the error that needs to be resolved. Below you can see several of these errors and their associated error that needs to be resolved. Each of the following errors has their own resolutions. Here the variable...
When changes are made to InnoDB tables in MySQL, the changes are first stored in memory in the InnoDB log buffer, then written to the InnoDB log files which are often referred to as the redo logs. The innodb_log_buffer_size variable may be adjusted to optimize...
Learn with XTIVIA how to address the common MySQL Error, "Too many open files." If you encounter the error where MySQL reports "Can't open file: (errno: 24)", analyze a few variables. The error usually occurs when the maximum number of files that may be open...
MySQL has is a maximum number of concurrent connections permitted to access the database, defined by the max_connections variable. The default value for max_connections is 151, and if the error Too Many Connections occurs, it means all connections are being...
When a MySQL replica instance is no longer to be associated with a primary database instance in a replication design, the replica not only needs to be stopped, but the connection information pointing to the primary must be cleared as well. In older versions of MySQL...
A MySQL error commonly encountered is to have "packet too large" reported and it is often coupled with a "lost connection to MySQL server during query" error as the server closes the connection. The errors occur when a MySQL communication packet exceeds the value set...