Oracle, GoldenGate & database engineering notes.https://juliendelattre.com/en-ushttps://juliendelattre.com/blog/mongodb-dmk-2-5-0-new-features/https://juliendelattre.com/blog/mongodb-dmk-2-5-0-new-features/Discover what's new in the latest MongoDB DMK 2.5.0 release: new features to help you manage your MongoDB databases more efficiently !Fri, 26 Jun 2026 00:00:00 GMThttps://juliendelattre.com/blog/trail_purge_bug_json/https://juliendelattre.com/blog/trail_purge_bug_json/How to fix OGG-12111 errors with failing purge tasks in GoldenGate 26ai, caused by a buffer overflow bug in the Administration Service.Wed, 24 Jun 2026 00:00:00 GMThttps://juliendelattre.com/blog/lob-replication-with-goldengate-and-importance-of-primary-keys/https://juliendelattre.com/blog/lob-replication-with-goldengate-and-importance-of-primary-keys/Why primary keys are important for LOB replication with GoldenGate, and how to monitor your tables to avoid migration issuesTue, 16 Jun 2026 00:00:00 GMThttps://juliendelattre.com/blog/goldengate-row-identification-misconceptions-and-solutions/https://juliendelattre.com/blog/goldengate-row-identification-misconceptions-and-solutions/How important are primary keys and non-null unique indexes for GoldenGate row identification, and how to overcome these issues ?Fri, 12 Jun 2026 00:00:00 GMThttps://juliendelattre.com/blog/goldengate-nginx-reverse-proxy-behavior-changes/https://juliendelattre.com/blog/goldengate-nginx-reverse-proxy-behavior-changes/Why you should always work with deployment-specific endpoints instead of generic ones, to avoid GoldenGate NGINX behavior changes.Tue, 09 Jun 2026 00:00:00 GMThttps://juliendelattre.com/blog/goldengate-26ai-out-of-place-patching-with-the-web-ui/https://juliendelattre.com/blog/goldengate-26ai-out-of-place-patching-with-the-web-ui/How to patch GoldenGate out-of-place directly from the web UI, ensuring maximum availability of your replication setup at all times.Sun, 31 May 2026 00:00:00 GMThttps://juliendelattre.com/blog/reconfigure-nginx-after-adding-a-goldengate-deployment/https://juliendelattre.com/blog/reconfigure-nginx-after-adding-a-goldengate-deployment/How to reconfigure the NGINX reverse proxy after adding a new deployment in a GoldenGate Microservices Architecture setup.Thu, 28 May 2026 00:00:00 GMThttps://juliendelattre.com/blog/ogg-08502-path-not-found-error-from-ogg-receiver-service/https://juliendelattre.com/blog/ogg-08502-path-not-found-error-from-ogg-receiver-service/If you find an OGG-08502 error in your ggserr.log file, do not worry about it. Your deployments and replications are working properly.Thu, 21 May 2026 00:00:00 GMThttps://juliendelattre.com/blog/install-and-configure-oem-plug-in-for-goldengate/https://juliendelattre.com/blog/install-and-configure-oem-plug-in-for-goldengate/Monitor your GoldenGate 26ai deployments efficiently with the official Oracle plug-in for Enterprise Manager Cloud Control.Mon, 18 May 2026 00:00:00 GMThttps://juliendelattre.com/blog/increase-goldengate-log-retention/https://juliendelattre.com/blog/increase-goldengate-log-retention/In GoldenGate, changing the log file retention or size is very easy, and can be customized for each log file individually !Tue, 12 May 2026 00:00:00 GMThttps://juliendelattre.com/blog/deployment-removal-failed-in-goldengate-configuration-assistant-ins-85038/https://juliendelattre.com/blog/deployment-removal-failed-in-goldengate-configuration-assistant-ins-85038/In GoldenGate Configuration Assistant (oggca), you can overcome an INS-85038 error by deleting the deployment with the REST APIThu, 07 May 2026 00:00:00 GMThttps://juliendelattre.com/blog/em-90000-ssl-error-with-goldengate-targets-in-oem/https://juliendelattre.com/blog/em-90000-ssl-error-with-goldengate-targets-in-oem/When discovering targets in Enterprise Manager from an NGINX-secured GoldenGate setup, pay close attention to certificate errors.Mon, 04 May 2026 00:00:00 GMThttps://juliendelattre.com/blog/delete-a-goldengate-deployment-when-the-password-is-lost/https://juliendelattre.com/blog/delete-a-goldengate-deployment-when-the-password-is-lost/If you lost the password of your GoldenGate deployment, you can still delete it without using the configuration assistant.Tue, 28 Apr 2026 00:00:00 GMThttps://juliendelattre.com/blog/bulk-update-of-goldengate-extracts-profiles/https://juliendelattre.com/blog/bulk-update-of-goldengate-extracts-profiles/How to update all your extracts' and replicats' profiles in one go with the GoldenGate REST API in Python, instead of one by one.Thu, 23 Apr 2026 00:00:00 GMThttps://juliendelattre.com/blog/goldengate-26ai-logs-explained/https://juliendelattre.com/blog/goldengate-26ai-logs-explained/Presentation of all the log files you can find in GoldenGate Microservices Architecture in 26ai, both locally and in the web UIMon, 20 Apr 2026 00:00:00 GMThttps://juliendelattre.com/blog/create-distribution-paths-in-nginx-secured-goldengate-26ai/https://juliendelattre.com/blog/create-distribution-paths-in-nginx-secured-goldengate-26ai/Presentation of a distribution path creation between two GoldenGate deployments secured with NGINX, with all necessary stepsFri, 17 Apr 2026 00:00:00 GMThttps://juliendelattre.com/blog/ogg-30007-how-to-register-certificates-in-goldengate/https://juliendelattre.com/blog/ogg-30007-how-to-register-certificates-in-goldengate/How to handle OGG-30007 error when registering certificates in GoldenGate trust store ? This will solve connection issues between deploymentsTue, 14 Apr 2026 00:00:00 GMThttps://juliendelattre.com/blog/overcome-goldengate-26ai-bug-on-custom-profiles/https://juliendelattre.com/blog/overcome-goldengate-26ai-bug-on-custom-profiles/A bug in GoldenGate 26ai, also affecting patched 23ai installations, makes the web UI hang when managing profiles created from the adminclient.Thu, 09 Apr 2026 00:00:00 GMThttps://juliendelattre.com/blog/monitoring-goldengate-certificates-expiration/https://juliendelattre.com/blog/monitoring-goldengate-certificates-expiration/How to monitor your GoldenGate certificates efficiently with the REST API, making sure you always renew them well on time ?Mon, 06 Apr 2026 00:00:00 GMThttps://juliendelattre.com/blog/change-goldengate-default-extract-profile/https://juliendelattre.com/blog/change-goldengate-default-extract-profile/How to update the GoldenGate default profile for extracts and replicats, to enable autostart and autorestart by default.Thu, 02 Apr 2026 00:00:00 GMThttps://juliendelattre.com/blog/the-undocumented-goldengate-all-role-you-should-know-about/https://juliendelattre.com/blog/the-undocumented-goldengate-all-role-you-should-know-about/Here is how I discovered an undocumented role in GoldenGate, and why you should know about it when recreating deleted users.Tue, 31 Mar 2026 00:00:00 GMThttps://juliendelattre.com/blog/deployment-creation-ins-85037-error-with-goldengate-26ai-for-db2-z-os/https://juliendelattre.com/blog/deployment-creation-ins-85037-error-with-goldengate-26ai-for-db2-z-os/How to solve INS-85037 when setting up GoldenGate ? The error is common to many installations, but here is a possible solution for DB2Thu, 26 Mar 2026 00:00:00 GMThttps://juliendelattre.com/blog/creating-path-connections-with-goldengate-rest-api/https://juliendelattre.com/blog/creating-path-connections-with-goldengate-rest-api/Creating a path connection in the web UI is very simple, but how to automate this creation in Python using the REST API ?Mon, 23 Mar 2026 00:00:00 GMThttps://juliendelattre.com/blog/credential-errors-ogg-15409-with-goldengate-migration-utility/https://juliendelattre.com/blog/credential-errors-ogg-15409-with-goldengate-migration-utility/The OGG-15409 error when migrating to GoldenGate 26ai is solvable by updating the extracts and replicats with new credentials.Thu, 19 Mar 2026 00:00:00 GMThttps://juliendelattre.com/blog/ogg-12020-payload-error-in-goldengate-migration-utility/https://juliendelattre.com/blog/ogg-12020-payload-error-in-goldengate-migration-utility/When migrating GoldenGate using the Oracle Migration Utility, an OGG-12020 is the sign that your parameter files cannot be read properly.Mon, 16 Mar 2026 00:00:00 GMThttps://juliendelattre.com/blog/userid-syntax-warning-in-goldengate-migration-utility/https://juliendelattre.com/blog/userid-syntax-warning-in-goldengate-migration-utility/If you get a warning on USERID syntax when migrating to Microservices Architecture, do not worry, but make sure to check your parameter files.Thu, 12 Mar 2026 00:00:00 GMThttps://juliendelattre.com/blog/ogg-08048-after-patching-goldengate-explanations-and-solutions/https://juliendelattre.com/blog/ogg-08048-after-patching-goldengate-explanations-and-solutions/An OGG-08048 error after patching GoldenGate shouldn't be an issue. Here is a blog to solve this and avoid the problem in the future.Mon, 09 Mar 2026 00:00:00 GMThttps://juliendelattre.com/blog/create-a-new-goldengate-deployment-with-the-rest-api/https://juliendelattre.com/blog/create-a-new-goldengate-deployment-with-the-rest-api/How to create a new GoldenGate Microservices deployment with the REST API, based on what is done by the configuration assistant.Thu, 05 Mar 2026 00:00:00 GMThttps://juliendelattre.com/blog/creating-an-oci-vm-with-the-command-line/https://juliendelattre.com/blog/creating-an-oci-vm-with-the-command-line/Discover how to use the OCI command line interface to create Virtual Machines in the Oracle Cloud efficiently and repeatably.Mon, 02 Mar 2026 00:00:00 GMThttps://juliendelattre.com/blog/relocate-trail-files-with-convchk-when-migrating-goldengate-to-the-microservices-architecture/https://juliendelattre.com/blog/relocate-trail-files-with-convchk-when-migrating-goldengate-to-the-microservices-architecture/Trail files relocation with the convchk utility when using the GoldenGate migration utility to Microservices Architecture.Fri, 27 Feb 2026 00:00:00 GMThttps://juliendelattre.com/blog/production-ready-goldengate-rest-client-in-python/https://juliendelattre.com/blog/production-ready-goldengate-rest-client-in-python/Get the most out of your GoldenGate deployments with this easy-to-use, production-ready REST API Python client library !Mon, 23 Feb 2026 00:00:00 GMThttps://juliendelattre.com/blog/querying-goldengate-rest-api-log-efficiently/https://juliendelattre.com/blog/querying-goldengate-rest-api-log-efficiently/Python script and jq calls to transform GoldenGate Microservices REST API log files for much easier analysis and monitoring.Fri, 20 Feb 2026 00:00:00 GMThttps://juliendelattre.com/blog/save-your-credential-store-before-patching-goldengate/https://juliendelattre.com/blog/save-your-credential-store-before-patching-goldengate/Avoid getting stuck with OGG-30555 and a corrupted GoldenGate credential store by preparing a credential store recreation before patching.Tue, 17 Feb 2026 00:00:00 GMThttps://juliendelattre.com/blog/mongodb-dmk-2-4-0-new-features/https://juliendelattre.com/blog/mongodb-dmk-2-4-0-new-features/Discover what's new in the latest MongoDB DMK 2.4.0 release: new features to help you manage your MongoDB databases more efficiently !Fri, 13 Feb 2026 00:00:00 GMThttps://juliendelattre.com/blog/ogg-08116-when-creating-a-connection-with-goldengate-rest-api/https://juliendelattre.com/blog/ogg-08116-when-creating-a-connection-with-goldengate-rest-api/OGG-08116 error is generated by GoldenGate RESTAPI when using a read-only endpoint instead of the create alias designated endpoint.Mon, 09 Feb 2026 00:00:00 GMThttps://juliendelattre.com/blog/debugging-goldengate-veridata-agents/https://juliendelattre.com/blog/debugging-goldengate-veridata-agents/Your GoldenGate Veridata agent doesn't start ? This blog gives a few tips to debug the agent and get the most of what Oracle gives us.Mon, 02 Feb 2026 00:00:00 GMThttps://juliendelattre.com/blog/goldengate-rest-api-basics-with-python/https://juliendelattre.com/blog/goldengate-rest-api-basics-with-python/Take the most out of your GoldenGate setup by leveraging the power of the REST API in Python, starting from the basics !Thu, 29 Jan 2026 00:00:00 GMThttps://juliendelattre.com/blog/comparing-data-when-migrating-databases-with-goldengate-veridata-installation-guide/https://juliendelattre.com/blog/comparing-data-when-migrating-databases-with-goldengate-veridata-installation-guide/Installation and configuration guide for GoldenGate Veridata 23c, with answers to frequently asked questions and best practices.Mon, 26 Jan 2026 00:00:00 GMThttps://juliendelattre.com/blog/goldengate-26ai-installation-and-new-administration-features/https://juliendelattre.com/blog/goldengate-26ai-installation-and-new-administration-features/Discover what's new in GoldenGate 26ai: a new web UI and AI features, yet a rather similar administration experience overall.Thu, 22 Jan 2026 00:00:00 GMThttps://juliendelattre.com/blog/upgrade-goldengate-from-classic-to-microservices-architecture-before-its-too-late/https://juliendelattre.com/blog/upgrade-goldengate-from-classic-to-microservices-architecture-before-its-too-late/With GoldenGate 19c being desupported, now is the last time for old Classic Architecture setups to migrate to Microservices !Mon, 19 Jan 2026 00:00:00 GMThttps://juliendelattre.com/blog/upgrade-classic-extracts-to-integrated-mode-before-migrating-to-goldengate-23ai/https://juliendelattre.com/blog/upgrade-classic-extracts-to-integrated-mode-before-migrating-to-goldengate-23ai/With classic extracts being deprecated, here is how to upgrade them to integrated mode before migrating to GoldenGate 23ai.Mon, 12 Jan 2026 00:00:00 GMThttps://juliendelattre.com/blog/planning-goldengate-migration-before-premier-support-expires/https://juliendelattre.com/blog/planning-goldengate-migration-before-premier-support-expires/With GoldenGate 19c/21c Premier Support expiring in April 2026, how to upgrade to GoldenGate 23ai depending on your source environment ?Mon, 05 Jan 2026 00:00:00 GMThttps://juliendelattre.com/blog/mongodb-dmk-2-3-new-features/https://juliendelattre.com/blog/mongodb-dmk-2-3-new-features/Overview of the main changes in MongoDB DMK 2.3, how to install it from scratch, and how to upgrade from a lower version.Mon, 15 Dec 2025 00:00:00 GMThttps://juliendelattre.com/blog/ogg-10556-when-starting-extract-from-goldengate-23ai-web-ui/https://juliendelattre.com/blog/ogg-10556-when-starting-extract-from-goldengate-23ai-web-ui/If you get an OGG-10556 error when starting an extract from the Web UI, remember to check the list of registered PDBs first !Fri, 12 Dec 2025 00:00:00 GMThttps://juliendelattre.com/blog/extend-session-timeout-in-oracle-goldengate-microservices-web-ui/https://juliendelattre.com/blog/extend-session-timeout-in-oracle-goldengate-microservices-web-ui/In this blog, I provide multiple ways of increasing session timeout in GoldenGate, modifying the configuration or using Python and the RestAPIMon, 08 Dec 2025 00:00:00 GMThttps://juliendelattre.com/blog/ogg-00423-when-performing-initial-load-with-goldengate-23ai/https://juliendelattre.com/blog/ogg-00423-when-performing-initial-load-with-goldengate-23ai/When performing an initial load with GoldenGate, if you get an OGG-00423 error, remember to check your grants first of all !Mon, 24 Nov 2025 00:00:00 GMThttps://juliendelattre.com/blog/ora-44001-when-setting-up-goldengate-privileges-on-a-cdb/https://juliendelattre.com/blog/ora-44001-when-setting-up-goldengate-privileges-on-a-cdb/Creating a common GoldenGate user in a multitenant architecture can lead to ORA-44001 when one of the PDBs is in read-only mode.Thu, 13 Nov 2025 00:00:00 GMThttps://juliendelattre.com/blog/setting-up-tls-encryption-and-authentication-in-mongodb/https://juliendelattre.com/blog/setting-up-tls-encryption-and-authentication-in-mongodb/Guiding you through setting up TLS encryption and authentication in any recent version of MongoDB, to secure your database connections.Mon, 10 Nov 2025 00:00:00 GMThttps://juliendelattre.com/blog/securing-an-existing-unsecure-goldengate-installation/https://juliendelattre.com/blog/securing-an-existing-unsecure-goldengate-installation/Is it possible to secure an already existing unsecure GoldenGate setup ? After covering the differences, this blog gives the answer.Fri, 07 Nov 2025 00:00:00 GMThttps://juliendelattre.com/blog/goldengate-23ai-installation-graphic-and-silent-mode-comparison-for-automation/https://juliendelattre.com/blog/goldengate-23ai-installation-graphic-and-silent-mode-comparison-for-automation/Comparing GoldenGate 23ai silent and graphic installations, with minimalist response file examples to help automate your installations.Mon, 03 Nov 2025 00:00:00 GMThttps://juliendelattre.com/blog/using-oracle-api-for-mongodb-on-oci/https://juliendelattre.com/blog/using-oracle-api-for-mongodb-on-oci/Create hybrid setups or migrate from MongoDB to Oracle, and vice-versa, with the official Oracle API for MongoDB on OCI.Wed, 15 Oct 2025 00:00:00 GMThttps://juliendelattre.com/blog/mongodb-log-analysis-a-comprehensive-guide/https://juliendelattre.com/blog/mongodb-log-analysis-a-comprehensive-guide/Log analysis in MongoDB : leverage the jq utility to query your logs, extract the important information and improve your efficiency as a DBA.Fri, 10 Oct 2025 00:00:00 GMT