2026-08-31 · run 2026-08-31-oracle-26.0.0-to-26.7.3

Oracle: 26.0.0 → 26.7.3 migration re-run

Upgrade: 26.0.0 → 26.7.3
Database: Oracle Database Free (23ai/26ai), release 23.26.2.0.0, single node, gvenzl/oracle-free:23-slim
Topology: single container
Host: laptop (16 vCPU, 31 GB RAM)
Condition: Engines other than Postgres · third engine, re-run at 26.7.3

Environment

Field	Value
Keycloak from → to	26.0.0 → 26.7.3
Database	Oracle Database Free (23ai/26ai), release 23.26.2.0.0, single node, `gvenzl/oracle-free:23-slim`
JDBC driver	`ojdbc17` + `orai18n` 23.26.0.0.0 in `fixtures/providers/` (unchanged from the 26.7.1 run)
Schema/user	`keycloak` (APP_USER; user IS schema, `KC_DB_SCHEMA` not used)
Topology	single container
Host	laptop (16 vCPU, 31 GB RAM)

Procedure

docker compose up -d db        # Oracle Free first init (healthy in ~37s on this host)
docker compose up -d keycloak  # 26.0.0 (schema created)
docker compose stop keycloak && sed -i 's/^KC_VERSION=.*/KC_VERSION=26.7.3/' .env
docker compose up -d keycloak  # migrate

Results

Check	Before (26.0.0)	After (26.7.3)
Keycloak version	26.0.0	26.7.3
`migration_model`	26.0.0	26.7.3
Tables	87	100
User indexes	218	283

Master-realm token endpoint ready after migration; migration clean and additive (no DDL errors surfaced in the Keycloak log).

Still not ported (unchanged from the 26.7.1 run)

snapshot/restore — needs Data Pump (expdp/impdp); snapshot.sh/restore.sh still exit 1 on KC_DB=oracle.
index-audit — Oracle's catalogue is USER_INDEXES/USER_IND_COLUMNS/ USER_IND_EXPRESSIONS (no pg_indexes, no information_schema.statistics); index-audit.sh still exits 1 on KC_DB=oracle.
S4 DML-only — untested; Oracle's user-is-schema model needs synonyms for a non-owner account, so the Postgres/MySQL finding does not translate mechanically.