This week, the Log Buffer Edition digs deep into the world of Oracle, SQL Server and MySQL and brings you some of the best blog posts around.

Oracle:

• Regardless of what type of industry or business you are involved in, the bottom-line goal is to optimize sales; and that involves replacing any archaic tech processes with cutting-edge technology and substituting any existing chaos with results-driven clarity.
• Oracle Private Cloud Appliance 2.1.1 Released.
• Every version of the optimizer enhances existing mechanisms and introduces new features, while 12c …

Google Cloud SQL is a fully managed database service that makes it easy to set-up, maintain, manage, and administer your relational MySQL databases in the cloud. Cloud SQL allows you to focus on your applications rather than administering your databases. Hosted on Google Cloud Platform, Cloud SQL provides a database infrastructure for applications running anywhere.

To evaluate the performance of Google’s Cloud SQL Instances, we ran the tpcc-mysql benchmarking utility with a scale factor of 500 warehouses. The purpose of running tpcc-mysql on each system was to determine the throughput of each instance under varying loads (number of connections or threads).

While the benchmark tests were being run, we took regular snapshots of the following data using MySQL Workbench.

• Number of select transactions executed per second
• Number of insert transactions executed per second
• Number of update …

This Log Buffer Edition covers top Oracle, SQL Server and MySQL blog posts of the week.

Oracle:

• In Oracle EBS 12.0 and 12.1 the Workflow notification system was not enabled to send e-mail notifications to users or roles who happened to have multiple e-mail addresses associated to them.
• Just how can a SQL Developer user quickly build out a SQL script for a database user that will include ALL of their privileges, roles, and system grants?
• Oracle BI 12c has been released for some time now. There are a few changes in the way …

Checksum is a standard practice among DBAs to verify the data consistency across replicated nodes. In this post we’re going to review the syncing options for an inconsistent MySQL slave of Galera cluster node.

Here we’re assuming a setup of regular replication to a MySQL instance from one of the Galera cluster nodes.

In the usual MySQL replication setup, standard practice involves the usage of the pt-table-checksum tool to identify the discrepancies and usage of pt-table-sync to bring them in sync. The checksum tool, pt-table-checksum, can run across Galera cluster node to verify the data consistency and confirm if the MySQL slave is consistent with a chosen primary node.

What happens if this Galera cluster’s regular MySQL slave sees data inconsistency on it? Will pt-table-sync work there? The answer to this depends…
pt-table-sync when used with –sync-to-master …

The show goes on. This Log Buffer Edition picks some blogs which are discussing new and old features of Oracle, SQL Server and MySQL.

Oracle:

• Directory Usage Parameters (ldap.ora) list the host names and port number of the primary and alternate LDAP directory servers.
• Data Visualization Cloud Service (DVCS) is a new Oracle Cloud Service. It is a subset offering of the currently supported Business Intelligence Cloud Service (BICS).
• ORA-24247: network access denied by access control list (ACL).
• Latches are low level …

This Log Buffer Editions picks few blog posts from Oracle, SQL Server and MySQL.

Oracle:

• If you grant the DBA role to a user, Oracle also grants it the UNLIMITED TABLESPACE system privilege. If you then revoke the DBA role from this user, Oracle also revokes its UNLIMITED TABLESPACE system privilege.
• Lost SYSMAN password OEM CC 12gR5.
• How Terminal Emulation Assists Easy Data Management.
• Using EMCLI List Verb …

This Log Buffer Edition covers some of the niftiest blog posts from Oracle, SQL Server and MySQL.

Oracle:

• OBIEE 11g and Essbase – Faking Federation Using the GoURL.
• You can use one of these to link an exception name with an Oracle error number. Once you have done this, you can use the exception name in the exception block which follows the declaration.
• This is a short post to help out any “googlers” looking for an answer to why their 12.1.0.5 EM Cloud …

Recently I have been looking at the Vault project as a means to manage secrets for applications and end-users. One of the use cases that immediately drew my attention was the ability to create dynamic role-based MySQL credentials.

Why Dynamic MySQL Credentials?

There are a few reasons why dynamic credentials would be beneficial, all of which can be handled by Vault, including:

• The database environment is too large to manage individual users.
• A need to authenticate on an external service, such as LDAP or GitHub organization.
• Provide credentials to external resources, such as auditors or outside consultants that automatically expire.
• Compliance requirements for strict audit logs for database access.

A High-Level Overview of Vault

Vault is a fairly new project by HashiCorp, the folks behind projects …

This Log Buffer is dedicated to the top quality news from the arena of Oracle, SQL Server and MySQL.

Oracle:

• We had a question on AskTom the other day, asking us to explain what a “latch” was.
• Jonathan Lewis thinks column groups can be amazingly useful in helping the optimizer to generate good execution plans because of the way they supply better details about cardinality.
• Today it’s all about developing software that makes access to your product easier.
• …

This Log Buffer Edition covers the weekly blog posts of Oracle, SQL Server and MySQL.

Oracle:

• An Index or Disaster, You Choose (It’s The End Of The World As We Know It).
• SQL Monitoring in Oracle Database 12c.
• RMAN Full Backup vs. Level 0 Incremental.
• Auto optimizer stats after CTAS or direct loads in #Oracle 12c.
• How to move …