Cheryl Bryll, Author at Virtual-DBA Remote DBA Services & Support - Certified Database Experts Remote Database Administration Wed, 18 Feb 2026 16:58:24 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://virtual-dba.com/wp-content/uploads/cropped-VirtualDBA-favicon-32x32.png Cheryl Bryll, Author at Virtual-DBA Remote DBA Services & Support - Certified Database Experts 32 32 A Case Study: Diagnosing a Stalled MongoDB TTL Monitor https://virtual-dba.com/blog/case-study-diagnosing-a-stalled-mongodb-ttl-monitor/ Tue, 17 Feb 2026 16:00:00 +0000 https://virtual-dba.com/?p=243656 SUMMARY: A comprehensive health check of a MongoDB replica set revealed that severe performance degradation was caused by a stalled TTL (Time-To-Live) Monitor on an undersized cluster, which was successfully resolved by scaling compute instances and manually purging expired data. This case highlights the necessity of correctly sizing database infrastructure to match data volume and […]

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]]> Choosing the Right Oracle Database Security Assessment: CIS, DBSAT, or Data Safe? https://virtual-dba.com/blog/choosing-the-right-oracle-database-security-assessment-cis-dbsat-or-data-safe/ Thu, 12 Feb 2026 16:32:00 +0000 https://virtual-dba.com/?p=243645 SUMMARY: Oracle administrators can effectively secure their environments by selecting the assessment tool—CIS Benchmarks for industry compliance, DBSAT for deep internal analysis, or Data Safe for continuous cloud governance—that best aligns with their operational maturity and infrastructure. To achieve genuine risk reduction, organizations must move beyond checkbox compliance and focus on the experienced interpretation and […]

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]]> Oracle AI Database 26ai: Now Available for Linux x86-64 On-Premises https://virtual-dba.com/blog/oracle-ai-database-26ai-now-available-for-linux-x86-64-on-premises/ Fri, 30 Jan 2026 23:02:39 +0000 https://virtual-dba.com/?p=243634 SUMMARY: Oracle has officially released Oracle AI Database 26ai for Linux x86-64, enabling enterprise organizations to deploy advanced AI capabilities and vector search directly within their secure on-premises data centers. DBAs managing Linux-based environments should view this release as the definitive signal to begin modernizing their infrastructure from the legacy 19c standard. Introduction For those […]

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]]> Top 10 Reasons for Oracle VKTM Time Drift: Insights from a Senior Oracle DBA https://virtual-dba.com/blog/top-10-reasons-for-oracle-vktm-time-drift-insights-from-a-senior-oracle-dba/ Tue, 20 Jan 2026 16:00:00 +0000 https://virtual-dba.com/?p=243609 SUMMARY: Oracle VKTM time drift alerts primarily stem from external operating system and virtualization instabilities rather than internal database errors, requiring administrators to focus on host-level clock synchronization to prevent critical cluster failures. Database administrators must prioritize tuning virtualization tools and stabilizing the host OS clock to permanently resolve VKTM drift issues and ensure environmental […]

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]]> When MongoDB Refuses Connections After a Restart — Lessons from a Disk-Full Crash https://virtual-dba.com/blog/when-mongodb-refuses-connections-after-restart-lessons-from-disk-full-crash/ Tue, 14 Oct 2025 22:12:40 +0000 https://virtual-dba.com/?p=243400 Summary When a high-volume insert workload caused a MongoDB server running on Ubuntu to crash due to 100% disk utilization, the WiredTiger storage engine’s inability to complete mandatory recovery prevented the database from binding to its connection port until sufficient disk space was available. To prevent severe database outages, organizations must adopt proactive capacity monitoring and ensure […]

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]]> How Oracle DBSAT Helps You Meet CIS Benchmarks with Confidence https://virtual-dba.com/blog/how-oracle-dbsat-helps-you-meet-cis-benchmarks-with-confidence/ Fri, 13 Jun 2025 05:31:09 +0000 https://virtual-dba.com/?p=243037 As a database professional with over 20 years of managing Oracle environments, I’ve seen firsthand how database security has evolved from a checkbox task to a mission-critical discipline. With threats becoming increasingly sophisticated and auditors relying more heavily on industry standards, such as the CIS (Center for Internet Security) benchmarks, securing your Oracle database is […]

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]]> Where Is On-Premise Oracle 23ai? https://virtual-dba.com/blog/where-is-on-premise-oracle-23ai/ Thu, 08 May 2025 20:12:12 +0000 https://virtual-dba.com/?p=242972 SUMMARY: Oracle has indefinitely delayed the general on-premises release of Oracle Database 23ai, signaling a strategic “Cloud-First, Developer-First” pivot that prioritizes cloud availability and requires extensive testing for performance parity across diverse server configurations. Customers still running older versions of the database should prioritize upgrading to DB 19c immediately, while developers can utilize the free […]

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]]> Oracle Database 23ai: To Upgrade or Not To Upgrade? https://virtual-dba.com/blog/oracle-database-23ai-upgrade-or-not/ Tue, 11 Feb 2025 16:47:00 +0000 https://virtual-dba.com/?p=242759 As Oracle DBAs, we constantly evaluate new releases, weighing the benefits against the potential risks. Oracle Database 23ai is generating a lot of buzz, but is it the right move for your environment? This blog post will delve into the factors you should consider when deciding whether to upgrade to 23ai, focusing on on-premises and […]

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]]> Resolving OPW-00029 Error: Bypassing Password Complexity in Oracle https://virtual-dba.com/blog/resolving-opw-00029-error-bypassing-password-complexity-in-oracle/ https://virtual-dba.com/blog/resolving-opw-00029-error-bypassing-password-complexity-in-oracle/#respond Thu, 20 Jun 2024 22:20:00 +0000 https://virtual-dba.com/?p=242300 ORAPWD OPW-00029: Password complexity failed for SYS user Encountering the OPW-00029 error due to password complexity for the SYS user in Oracle 12c and above can be problematic. This guide details how to bypass the stringent password requirements by using the ‘format=12’ flag, allowing you to set simpler passwords. Follow these instructions to manage password […]

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]]> https://virtual-dba.com/blog/resolving-opw-00029-error-bypassing-password-complexity-in-oracle/feed/ 0 keepalived daemon: The Secret Sauce to a HAProxy Dual Set Up https://virtual-dba.com/blog/keepalived-daemon-secret-sauce-to-haproxy-dual-set-up/ https://virtual-dba.com/blog/keepalived-daemon-secret-sauce-to-haproxy-dual-set-up/#respond Thu, 18 Apr 2024 20:21:57 +0000 https://virtual-dba.com/?p=242195 If you need a High Availability (HA) setup to balance connections to your MariaDB cluster nodes, you should consider using HAProxy. HAProxy set up in a dual configuration (primary and secondary) will further contribute to your redundant HA topology. This blog is intended to describe how the key component in the dual HAProxy configuration works […]

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