Role Summary The Oracle DB Patching Tower Lead (Onshore) is the primary Oracle interface to client DBA L2/L3 and application owners during Canada hours. This role owns quarterly PSU/RU and CPU patch cycles across 20,700+ Oracle DB instances — including RAC Grid Infrastructure rolling patches, ASM considerations, Data Guard switchovers, and OPatch/opatchauto execution. Deep Oracle DBA patching expertise is mandatory, along with strong change governance and cross-team coordination.

ROLE IN THE OPERATING MODEL

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- Tower/pod lead and SME for Oracle patching — primary Oracle interface to client DBA L2/L3 and application owners during Canada hours and weekend windows

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- Coordinates application-owner sign-off post-patching; owns Oracle tower compliance reporting to the Patch Service Lead

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- Operates as Oracle execution layer under client direction; database design and engineering remain client DBA L2/L3 owned

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- Directs offshore Oracle SMEs during onshore hours; manages escalation within agreed SLTs

Key Responsibilities

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- Plan and execute Oracle quarterly PSU/RU and CPU security patches via OPatch/opatchauto and datapatch

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- Perform Grid Infrastructure/RAC rolling patching with ASM and Data Guard considerations to minimise disruption

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- Take pre-patch RMAN backups, run health checks, validate post-patch, and roll back PSU/RU on failure

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- Track DB CVEs, version currency, and EOL/EOS (e.g., 12c → 19c migration need); maintain compliance and update CMDB/KEDB

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- Coordinate with client DBA L2/L3 and application owners for sign-off; perform RCA for patch failures

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- Author RFC/CAB submissions for Oracle patch waves; align with client quarterly release calendar

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- Own Oracle tower compliance reporting; present KPIs to the Patch Service Lead for governance reviews

TECHNICAL ACTIVITIES FOR THE SCOPE

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- Execute Oracle quarterly PSU/RU and CPU patches via OPatch/opatchauto and datapatch across standalone, RAC, and Data Guard environments

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- Perform GI/RAC rolling patching — node-by-node execution, cluster resource validation, ASM disk group health checks

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- Take pre-patch RMAN backups; run INVALID object recompilation and listener restart post-patch

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- Execute OPatch conflict analysis and prerequisite checks; manage opatch prereq failure workarounds

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- Roll back PSU/RU on failure; document RCA and update KEDB

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- Track Oracle CPU release schedule (Jan/Apr/Jul/Oct) and plan waves 4–6 weeks in advance

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- Author RFC/CAB documentation; coordinate maintenance window scheduling with DBA teams

Primary Skills

SKILLS, TOOLS &

- COMPETENCIES

DB Platforms

Oracle 11g/12c/19c/21c

- Oracle RAC
- Oracle Data Guard
- Oracle GI (Grid Infrastructure)
- ASM

Patching Tools OPatch

- opatchauto
- datapatch
- OJVM patching
- PSU/RU/CPU/GDR patch types
- Conflict detection

Automation

Bash/Shell scripting

- Ansible Oracle roles
- Python DBA scripts
- opatchauto orchestration

ITSM &

- Vuln

ServiceNow (Change/CMDB)

- Tenable
- Qualys
- RFC/CAB
- KEDB management

Observability

Oracle Enterprise Manager (OEM)

- Splunk
- Dynatrace
- Moogsoft
- AWR/ASH awareness

Secondary Skills ▸





- SQL/PL-SQL fundamentals and shell scripting for Oracle automation

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- Oracle Exadata / Engineered Systems awareness

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- Multitenant architecture (CDB/PDB) patching awareness

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- Cloud DB (OCI/Azure) fundamentals

CERTIFICATIONS

Mandatory

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- ITIL 4 Foundation

Preferred (one Or More)

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- Oracle Certified Professional (OCP) —
- Oracle Database 19c (mandatory preference)

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- Oracle Certified Associate (OCA) acceptable at SME level
- Oracle Certified Master (OCM) a strong plus

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- Oracle RAC / Grid Infrastructure Specialist credential

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- Oracle Cloud Infrastructure (OCI) certification — advantageous

NICE TO HAVE

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Experience patching Oracle in financial services with high-availability, zero-downtime requirements

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- Oracle Exadata patching experience

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- OEM 13c grid monitoring operational experience

WORK MODEL &

- COMMITMENT

Hours

Canada business hours + weekend change window coverage

Shift Model

Hybrid onshore; quarterly PSU cycles and weekend maintenance windows

On-Call

Yes — emergency Oracle CVE response and RAC failover events

Language

English (mandatory)

Compensation: We are offering between $60,000 – $85,000. Applications will be accepted until Aug 21, 2026.Cognizant will only consider applicants for this position who are legally authorized to work in Canada without requiring employer sponsorship, now or at any time in the future.

Disclaimer: The salary, other compensation, and perks information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.

Please note, this role is not able to offer visa transfer or sponsorship now or in the future

📌 Oracle Patching SME (Toronto)
🏢 Cognizant
📍 Toronto