Fix Oracle Registry DB Connection Fails Due to Validation Query Misconfiguration

[KD23243]

Related Issue

• Oracle Registry DB Connection Fails Due to Validation Query Misconfiguration product-is#26198

Purpose

This PR fixes the issue where Oracle-based external databases fail to validate connections when used as the local registry database in WSO2 Identity Server.

Previously, the validation query configuration in <IS_HOME>/repository/resources/conf/default.json and <IS_HOME>/repository/resources/conf/infer.json used an incorrect key database.$1.validationQuery instead of the correct database.$1.pool_options.validationQuery. As a result, the default SELECT 1 query was applied for all databases, causing connection validation failures in Oracle (SELECT 1 is invalid in Oracle).

Changes
Updated the JSON configuration to use database.$1.pool_options.validationQuery for all database types.

Manual Testing

Screen.Recording.2025-11-20.at.9.08.19.AM.mov

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✨ Finishing touches

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