Risk
9/24/2010
09:39 PM
Connect Directly
Twitter
RSS
E-Mail
50%
50%

EnterpriseDB Adds Integrated Replication, Hot Standby

Postgres Plus gains features from updated open source database PostgreSQL 9.0.

8 Big Data Deployments In Detail
(click image for larger view)
8 Big Data Deployments In Detail
EnterpriseDB has incorporated the 9.0 version of the open source PostgreSQL database system, including built-in replication, into its commercial system, Postgres Plus.

Built-in replication needed to be added to the Postgres Plus to make it competitive with commercial systems, which already contain the feature, acknowledged Robin Schumacher, EnterpriseDB director of product strategy. The PostgreSQL open source project serves as the code base for Postgres Plus. Project managers added the feature in the 9.0 version, which was released on Sept. 20, and EnterpriseDB said its Postgres Plus product supported the new code base immediately.

With built-in replication, a second database server can serve as a satellite or secondary system to a master system. The replicated data set is created by forwarding the activity captured in the write-ahead log to the secondary system. The replication will trail slightly the master copy. The streaming replication method is asynchronous but the two database servers will maintain identical data sets and one can be recovered from the other, Schmacher said in an interview.

The built-in replication gives Postgres Plus a greater ability to scale out to more servers and fail-over more easily in case of database failure, giving Postgres Plus a better high availability profile.

The 9.0 version also allows the master database to query a standby system, giving both the open source system and Postgres Plus hot-standby capability. "Built in replication and hot standby have been the most requested features for many years," said Simon Riggs, lead contributor to hot standby in the PostgreSQL open source project and CTO of of 2ndQuadrant, a firm that supplies technical support for PostgreSQL systems. Riggs made the comment in the announcement of the 9.0 version by the open source project.

Catching up with built-in replication might sound like just another trailing edge feature of open source databases, sometimes cited for their slow adoption rate inside the enterprise. But any additional features that match the commercial systems are heeded in the case of Postgres Plus because it contains an Oracle compatibility layer, allowing most applications that run under Oracle to also run under Postgres Plus, Schumacher said. Postgres Plus recognizes Oracle's PL/SQL variant of the SQL data access language. Stored procedures and triggers in Oracle can be transferred to and run in Postgres Plus, he said.

Among other things, the EnterpriseDB system also works on servers running the 64-bit Windows Server operating system, which along with Linux, is one of the fastest growing operating systems in the data center. Postgres Plus also supports the ability of the 9.0 version of the open source code to continue running while an upgrade or patch to the system takes place. In the past, an upgrade required the data to be transferred to an auxiliary system, then back after the upgrade had taken place, Schumacher said.

The 9.0 version of the open source code base was generated by about 100 core contributors and another 150 occasional contributors. PostgreSQL meets the ACID (atomicity, consistency, isolation, and durability) standard for relational systems, guaranteeing transaction integrity.

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
Partner Perspectives
What's This?
In a digital world inundated with advanced security threats, Intel Security seeks to transform how we live and work to keep our information secure. Through hardware and software development, Intel Security delivers robust solutions that integrate security into every layer of every digital device. In combining the security expertise of McAfee with the innovation, performance, and trust of Intel, this vision becomes a reality.

As we rely on technology to enhance our everyday and business life, we must too consider the security of the intellectual property and confidential data that is housed on these devices. As we increase the number of devices we use, we increase the number of gateways and opportunity for security threats. Intel Security takes the “security connected” approach to ensure that every device is secure, and that all security solutions are seamlessly integrated.
Featured Writers
White Papers
Cartoon
Current Issue
Dark Reading's October Tech Digest
Fast data analysis can stymie attacks and strengthen enterprise security. Does your team have the data smarts?
Flash Poll
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2014-0619
Published: 2014-10-23
Untrusted search path vulnerability in Hamster Free ZIP Archiver 2.0.1.7 allows local users to execute arbitrary code and conduct DLL hijacking attacks via a Trojan horse dwmapi.dll that is located in the current working directory.

CVE-2014-2230
Published: 2014-10-23
Open redirect vulnerability in the header function in adclick.php in OpenX 2.8.10 and earlier allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the (1) dest parameter to adclick.php or (2) _maxdest parameter to ck.php.

CVE-2014-7281
Published: 2014-10-23
Cross-site request forgery (CSRF) vulnerability in Shenzhen Tenda Technology Tenda A32 Router with firmware 5.07.53_CN allows remote attackers to hijack the authentication of administrators for requests that reboot the device via a request to goform/SysToolReboot.

CVE-2014-7292
Published: 2014-10-23
Open redirect vulnerability in the Click-Through feature in Newtelligence dasBlog 2.1 (2.1.8102.813), 2.2 (2.2.8279.16125), and 2.3 (2.3.9074.18820) allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the url parameter to ct.ashx.

CVE-2014-8071
Published: 2014-10-23
Multiple cross-site scripting (XSS) vulnerabilities in OpenMRS 2.1 Standalone Edition allow remote attackers to inject arbitrary web script or HTML via the (1) givenName, (2) familyName, (3) address1, or (4) address2 parameter to registrationapp/registerPatient.page; the (5) comment parameter to all...

Best of the Web
Dark Reading Radio
Archived Dark Reading Radio
Follow Dark Reading editors into the field as they talk with noted experts from the security world.