Vishal Kiran Thavva

Global Customer Support: EXADATA, RAC, ASM, OCI Cloud.

Supported various customer Engineered systems Issues and provide
Solutions.
As a GCS Engineer, Have been supporting all severity SR’s.
Have been handling all kind of Exa-scalability, Exa-cloud, RAC,
Storage, Cell and DB node performance Issues.
Assisting customers during QFSDP patching on Exadata systems
(storage servers, DB servers, Grid home, InfiniBand switch software and ILOM firmware).
Have been addressing bugs, which customer encounter and providing
bug fix patches to customer by coordinating with development team
when required.
Have been assisting on system vulnerabilities CVE’s and log4j issues.
Have been doing RCA’s for critical issues.
Have been supporting clients over zoom sessions in critical situations.

Have troubleshooted node eviction Issues which might be due to existing bugs or due to hight load and misconfigurations.

• Client: DST Internal (Health care, Retirement Services, private equity administrators & mutual funds.

Have Lead AWD Project- In terms of Migrations, upgradations, new builds, standards, Documentation, POC’s, Checklist items for tracking, Automations
Worked on building 19c Non-CDB and CDB.
Upgraded the Oracle databases from 11.2 to 12.2, 12.1 to 19.6 with
pluggable conversions and standby on, DGMGRL configurations.
Done a POC for a client to migrate 8 node RAC 12.2 to 19.6 stand alone with DR and wallet off.
Restored the lost application PDB on reporting environment when catalogwas missing.
Trouble shooting and resolved PDB$SEED issues.
Tested the performance of oracle databases using oracle database
replay in OEM before migrating to Mesh hardware.
Have migrated the databases from VBlock to Mesh hardware with minimal
downtime for around 280 databases.
Have worked on backup setup to data domains, PSU's, OEM agent installs & upgrades.
Have worked on Hammer DB for load testing and performance.check on
Oracle, PostgreSQL databases.

ADP Internal ( Oracle RAC, Postgresql, MongoDB, Golden gate )

Experience in backups using expdp, impdp and backups/ restore using RMAN
 Refresh of development/test/QA databases from production backup.
 Cloning and managing Duplicate/Standby databases using RMAN.
 Very good technical skills in RMAN, Performed database recovery and restorations to a Particular point of time as per client’s requirement.
 Experience in ASM administration like partitioning LUNS, creating disks, LUN addition to ASM disk groups. Non-ASM to ASM conversions.
 Worked on Storage Migrations from Hitachi to Vmax.
 Experience in Maintaining and administration of Real Application Cluster (RAC) with Data guard setup. RAC builds of 11g, 12c up to 6 nodes and exposure of SRVTL & CRSCTL utilities.
 Worked on golden gate replications and monitoring.
 Monitoring the performance and analyzing using AWR, ADDM, ASH reports,
Execution plans, Gathering stats, trace on session, TFA debug.

• Client: Nissan North America ( DB2 Mainframes & Oracle )

Working on deployments whenever necessary in coordination with
Application teams.
 Experience in backups using expdp, impdp and backups/ restore using RMAN
 Refresh of development/test/QA databases from production backup.
 Cloning and managing Duplicate/Standby databases using Rman.

Worked on oracle database patching on standalone and RAC systems using
OPatch utility ( CPU and PSU ).
 Worked on migration of oracle databases from version 8i/9i/10g to 11g from
windows to Linux platform.