Tracking from googleapis/mcp-toolbox-sdk-python#532. The issue seems to be strict URL parsing of Oracle proxy usernames like user[client] in connection URLs. Brackets are invalid in URL userinfo, so parsers reject; percent-encoding may pass parsing but not be decoded before reaching the Oracle driver, causing auth failure.
Suggested fix: decode percent-encoded usernames before passing to the driver, or avoid strict URL parsing for userinfo and construct DSN/username explicitly (e.g., use URL.create() equivalent in Go or split config fields).
Workaround: avoid URL strings for proxy users; pass proxy user separately via structured config/driver options if supported.
Tracking from googleapis/mcp-toolbox-sdk-python#532. The issue seems to be strict URL parsing of Oracle proxy usernames like
user[client]in connection URLs. Brackets are invalid in URL userinfo, so parsers reject; percent-encoding may pass parsing but not be decoded before reaching the Oracle driver, causing auth failure.Suggested fix: decode percent-encoded usernames before passing to the driver, or avoid strict URL parsing for userinfo and construct DSN/username explicitly (e.g., use
URL.create()equivalent in Go or split config fields).Workaround: avoid URL strings for proxy users; pass proxy user separately via structured config/driver options if supported.