Bryan's Oracle Blog

Expert insights on Oracle Database, Zero Data Loss Recovery Appliance (ZDLRA), backup and recovery strategies, database security, and enterprise database solutions by Bryan Grenn.

Thursday, March 5, 2026

Recovery Service failure checks

When using the Autonomous Recovery Service there are some prerequisites that need be met. I have a checklist that goes through these requir...

Thursday, February 12, 2026

Sudden ORA-12578: TNS:wallet open failed when logging in as SYS

ORA-12578: TNS:wallet open failed when logging in as SYS This blog post covers a possible cause of a "ORA-12578: TNS:wallet open failed...

Tuesday, January 20, 2026

Oracle Database Encryption (TDE)

Oracle TDE (Transparent Data Encryption) is a critical piece of data protection, and online encryption is a great tool you can use to simpli...

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Bryan Grenn

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