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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...
The MySQL InnoDB storage engine is used by default in all newer versions of MySQL (5.5.5+). As a well-performing transactional storage engine with crash recovery capability, it is the storage engine of choice for most database settings. One of the most important...
XTIVIA is highlighting new features in SQL Server 2016! We can set you up with all the exciting new features available in SQL Server 2016. Here's how implementing new features will benefit your SQL Server environment. Stretch Database Stretch Database allows you to...
What is db2prereqcheck? db2prereqcheck is a tool IBM provides to check for all OS and software prerequisites prior to and during the installation of Db2. It is included with every fixpack and base code that Db2 provides. When to use db2preqcheck Use db2prereqcheck...
Online Defragmentation Do you have large tables that contain too many extents but haven't been able to schedule a maintenance window to reorganize? With the release of Informix 11.70, IBM introduced a new defragmentation utility that lets you reorganize a table or...
A common question asked from super users of applications is, "What is the difference between Windows Authentication and SQL Server Authentication?" While there are many details under the covers of SQL Server and Windows Authentication, the differences can be summed up...
The row size for a table in Db2 is important in several ways. It determines which page size can be used for a tablespace, and it can help us estimate table size - either optimal or future. Selecting a Page Size Db2 page sizes are adjustable only for tablespace and...
A Foreign Key is a constraint. Due to this definition, it only places a limitation on what data can be inserted into a column(s) and does not address the indexes needed to help performance when joining tables Take the following design. If you wanted to join the 2...