Cheryl Lei Bryll
Senior Oracle DBA
Cheryl is a Senior Oracle DBA at XTIVIA. She has been working with Oracle technology for over 20 years. Having started her professional career in accounting she moved into IT as an Oracle developer for an ERP Software company in Clearwater FL. Where she then progressed as an Oracle developer for the Oracle EBS application. In her spare time, she taught the Oracle Developer OCP courses at an accredited college as an adjunct part time instructor for many years. Her career further progressed into the more technical side of Oracle as an Oracle EBS DBA and Core DBA. She has worked on Database platform migrations, High Availability implementations and upgrades of Databases and Oracle EBS R11 and R12 on various operating systems. As well as new implementations for R12.2 with RAC. Her skill set includes project planning, Oracle DR and High Availability Solutions, Patching and upgrade solutions, as well as daily DBA tasks to ensure optimal performance of the Oracle databases. When Cheryl isn’t working with Oracle technology projects she can be found on a trail or mountain somewhere training for another Ultramarathon running event.
A Case Study: Diagnosing a Stalled MongoDB TTL Monitor
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... read more
Choosing the Right Oracle Database Security Assessment: CIS, DBSAT, or Data Safe?
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... read more
Oracle AI Database 26ai: Now Available for Linux x86-64 On-Premises
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. Oracle consolidated the previous 23ai family... read more
Top 10 Reasons for Oracle VKTM Time Drift: Insights from a Senior Oracle DBA
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.... read more
When MongoDB Refuses Connections After a Restart — Lessons from a Disk-Full Crash
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... read more