Architecting resilience. Accelerating performance.

Three specialised pillars – zero-loss migration, NoSQL at scale, and gov-grade security with 24/7 care – delivered by one accountable engineering team.

Service 01

Database Migration & U2L Modernization

Safe, proven database upgrades and Unix-to-Linux migrations based on 24 years of field experience.

We assist enterprises in migrating from aging Unix platforms to stable x86 Linux environments, upgrading Oracle databases, and adopting modern open-source engines. Through rigorous pre-migration verification and well-planned cut-over procedures, we keep service downtime to an absolute minimum.

U2L Infrastructure TransitionSafe migration of mission-critical systems from legacy Unix (SPARC, AIX) to enterprise-ready Linux environments.
Database Upgrades & TransitionReliable execution of Oracle version upgrades and smooth migrations to cost-effective open-source databases (PostgreSQL, MariaDB).
Pre & Post Data VerificationThorough checks on row counts, schemas, and data consistency before and after cut-over to ensure complete data accuracy.
Controlled Cut-Over ExecutionOff-hours and weekend transition execution with tested rollback runbooks to ensure operational continuity.

U2L MigrationDB UpgradeData TransitionData VerificationCut-Over Support

How we deliver this service

How a U2L project runs

01
Assess
Review aging hardware, end-of-support surcharges, single-server risk and mixed DB / WEB / APP workloads.
02
Design
A two-node active-standby database cluster, separate virtualization hosts for WEB / APP, all-flash storage and redundant SAN and 10 GbE networks.
03
Build
Install servers, storage and switches; deploy RHEL, VMware vSphere and the high-availability stack with current patches.
04
Migrate
Move data in phases following a cut-over runbook, converting between DBMS where needed.
05
Verify
Our integrity engine checks every table and schema, then we benchmark performance against the old system.

FIG. 01 / U2L MIGRATION & INTEGRITY CHECKConcept

Conceptual diagram only; unrelated to any specific client infrastructure.

Service 02

Enterprise Multi-DBMS & Large-Scale NoSQL Engineering

Operating systems from large-scale distributed NoSQL clusters to high-availability financial cores.

Modern workloads demand hybrid databases. DBWorks specializes in high-concurrency relational systems and hyperscale NoSQL architectures, staffed by senior engineers who manage multiple DBMS platforms simultaneously.

Hyperscale MongoDB architectureReplica Sets, sharded cluster deployment, chunk rebalancing, and RBAC security for high-volume traffic processing.
Deep kernel & cache optimizationWiredTiger cache sizing (wiredTigerCacheSizeGB), syncPeriod tuning to resolve write stalls, and secondary oplog synchronization.
Point-in-time recovery (PITR)Oplog-based replay (PBM) for a reliable rollback even after accidental drop or update events.
Application-level troubleshootingConnection pool optimization (JEUS/Tomcat), singleton MongoClient refactoring and cursor leak remediation.

MongoDB ClusterSharded ClusterWiredTiger TuningPITR RecoveryMulti-DBMS

How we deliver this service

1. Scope of a MongoDB maintenance contract

Included

Installation & Architecture Setup: Replica sets, sharding, authentication, roles, and RBAC
Proactive Monitoring: Real-time performance, resource and failure tracking with threshold alerts
Backup & Disaster Recovery: Automated scheduled backups, restore testing and Point-in-Time Recovery (PITR)
24/7 Emergency Response: Immediate engineer response to critical incidents
Security & Compliance Audits: TLS/SSL encryption, role management and password policy review

Optional

Index, Query & Cache Tuning: Execution plan analysis and storage engine optimization
Database Migration: Seamless data migration from other databases to MongoDB
Enterprise Architecture Consulting: Production schema design and aggregation query optimization

2. Incident response

Detect
Senior DBA Triage
Root-Cause Analysis
Resolution & Recovery
Post-Mortem Report

3. Regular preventive audits

Weekly & Monthly Health Checks: Shard balancing, slow query profiling, and replication lag tracking
Backup Integrity Verification: Routine restore simulations to validate disaster recovery readiness
Security & Certificate Audits: TLS certificate expiration tracking and access control audits
Executive Performance Reporting: Detailed trend analysis covering CPU, memory, disk IOPS, and cache hit ratios
Rigorous Change Management: Documented version upgrades, pre-change impact assessments, rollback runbooks, and post-verification

4. Typical troubleshooting scenarios

Accidental Drop

A critical production collection was accidentally dropped. By pinpointing the exact timestamp in the Oplog, we performed full backup restoration and targeted Oplog replay, achieving zero data loss recovery.

Write Stalls & Engine Saturation

The WiredTiger storage engine cache became saturated under heavy traffic, causing write stalls during disk flush cycles. By reconfiguring cache allocation, flush intervals, and checkpoint pressure, normal throughput was promptly restored.

Connection Pool Exhaustion

An unmanaged application opened new database connections per request, triggering connection pool exhaustion and timeout errors. We re-architected the WAS connection pool, enforced cursor termination, and established persistent client reuse patterns to permanently eliminate latency.

FIG. 02 / SHARDED MONGODB CLUSTERConcept

Conceptual diagram only; unrelated to any specific client infrastructure.

Service 03

DB Security, WEB/WAS & 24/7 SLA Care

Rapid Incident Containment: 2-Hour On-Site SLA and Continuous Compliance.

Data assets require vigilant protection. DBWorks combines rigorous preventive health checks with compliance-focused engineering for government, financial and enterprise environments.

Tiered 24/7 emergency dispatchImmediate level-1 triage, senior DBA diagnosis and on-site emergency dispatch within 2 hours.
Full-stack security enforcementColumn-level encryption (D'Amo, SafeDB), access control (DBSafer, ChakraMax), 2FA/OTP login and granular ACL policies.
WEB/WAS & Middleware CareConnection pool optimization, JVM memory tuning, and thread-dump diagnostics for enterprise application servers (JEUS, WebtoB, Tomcat, WebLogic).

24/7 support2-hour SLADB SecurityDBSaferD'AmoWEB/WAS

How we deliver this service

24/7 escalation

First on-call engineer
Second on-call engineer
Duty manager

Engineers stay on standby around the clock; if one level cannot be reached, the next is called.

Service management

Prevention

Regular and ad-hoc inspections, log monitoring and analysis, server optimization and diagnostic consulting.

Incident handling

On-site or remote response, with an incident history kept to prevent recurrence.

Partner management

Standardized processes and shared quality controls across solution partners.

Training

Q&A and training for your operators, and regular training for our support team.

What you receive

Incident management guide
Training and incident-drill reports
Drill scenarios
Operator manuals

FIG. 03 / 24/7 PROACTIVE HEALTH CHECKConcept

Conceptual diagram only; unrelated to any specific client infrastructure.

Technology matrix & solutions ecosystem

Platforms and technologies we engineer, migrate, operate and support.

Relational DBMS	Oracle (SE / EE / RAC / Exadata)MS-SQL ServerMariaDBPostgreSQLMySQL
NoSQL & in-memory	MongoDB (replica set / multi-sharding)Redis
Enterprise hardware	HPE ProLiant (DL380 Gen10 / Plus)x86 systems
All-flash storage & SAN	HPE Alletra (6000 series / triple parity)Brocade SAN (G610 32 Gbps)
Cloud environments	KT Cloud (G-Cloud public / gov)Amazon Web Services (AWS)Microsoft Azure
WEB / WAS	WebLogicJEUSWebtoBTomcatApacheLENA
Replication & CDC	Oracle GoldenGateOracle Data Guard
Security & backup	D'AmoSafeDBDBSaferChakraMaxVeeam Backup & Replication
Monitoring & tools	Percona Monitoring & Management (PMM)DatadogWhaTap

Modernize your database & infrastructure today.

Speak directly with a Chief Database Architect. We evaluate your current environment and provide an actionable migration and tuning roadmap within 48 hours.