Release Notes for IDR 11.4 for Iceberg

IDR 11.4.0.5-5814

Enhancements in IDR 11.4.0.5-5814 for CDC Replication Engine for Iceberg

• CDC Replication Engines now provide the engine type and version to the IBM License Metric Tool (ILMT). Opt out by setting system parameter global_enable_metrics_files to NONE.

Known Issues fixed in IDR 11.4.0.5-5814 for CDC Replication Engine for Iceberg

• DT496697 CDC Replication Engine for Iceberg - creating subscriptions against S3 typed file system returns EOFException
• DT475160 CDC Replication Engines - some subscriptions fail to stop and return errors when attempting to stop hundreds of subscriptions at once
• DT495908 CDC Replication Engines - text Localization defaults to English instead of using the expected language bundle for the OS Default Locale

Bugs fixed in IDR 11.4.0.5-5814 for CDC Replication Engine for Iceberg

• CDC Replication Engines - command line utilities display English instead of the Locale's translation

IDR 11.4.0.5-5813

Enhancements in IDR 11.4.0.5-5813 for CDC Replication Engine for Iceberg

• CDC Iceberg is now compatible with REST Catalogs via Dremio
• CDC Iceberg is now compatible with REST Catalogs via watsonx.data
• CDC Iceberg is now compatible with REST Catalogs via Polaris
• CDC Iceberg is now compatible with Generic REST Catalog Property Sets
• system property table_load_while_mirror_type can now be set at the subscription level and table level
• dmreassigntable now allows you to change the mapping type of an assignment from Standard to Adaptive and back again

Known Issues fixed in IDR 11.4.0.5-5813 for CDC Replication Engine for Iceberg

• DT473450 CDC Replication Engines - replication (refresh and/or mirroring) for character-type data became slower after upgrading to CDC 11.4.0.5-5752, which included the move from Java 8 to Java 17

IDR 11.4.0.5-5809

Enhancements in IDR 11.4.0.5-5809 for CDC Replication Engine for Iceberg

• Updated JVM to 17.0.19.0, java version "17.0.19" 2026-04-21 IBM Semeru Runtime Certified Edition 17.0.19.0 (build 17.0.19+10). For details, see IBM Semeru Runtimes fixes for version 17
• Upgraded PointBase JARs from Java 8 to Java 17
• Effective May 2026, IDR CDC will be supported on the following architectures of RedHat Enterprise Linux (RHEL) 10 : x86_64 (Intel/AMD 64-bit), IBM Z (s390x) and IBM Power Systems (ppc64le). Not every engine supports every architecture.

Known Issues fixed in IDR 11.4.0.5-5809 for CDC Replication Engine for Iceberg

• DT469898 CDC Replication Engines - CDC comms socket connections are left in CLOSE_WAIT connections state
• DT467921 CDC Replication Engines may raise 'PKIX path building failed' exception upon restarting after applying an IIDR Update Fix if the Database requires TLS connection

IDR 11.4.0.5-5808

Enhancements in IDR 11.4.0.5-5808 for CDC Replication Engine for Iceberg

• CDC Iceberg now supports creating tables
• CDC now supports TLS server authentication as an option in addition to TLS mutual authentication.
• CDC now supports custom charsets loaded from *.cnv files that have been compiled from ICU (International Components for Unicode) *.ucm files.

Bugs fixed in IDR 11.4.0.5-5808 for CDC Replication Engine for Iceberg

• When a target variable-length binary column is overridden with an encoding, the data is padded with spaces. The fix changes the data that is applied to the target column so that it is no longer padded with spaces. In order to repair incorrect target column data, if may be necessary to refresh target tables containing variable-length binary columns with encoding overrides.
• When a source variable-length binary column is overridden with an encoding, the column is described to the target as a fixed-length character column. The fix describes these columns as a variable-length character column. After upgrading, source tables containing these columns will be redescribed as variable length to the target.

April 1, 2026

IDR 11.4.0.5-5803

Enhancements in IDR 11.4.0.5-5803 for CDC Replication Engine for Iceberg

• CDC Iceberg now supports Snowflake Open Catalog

March 26, 2026

IDR 11.4.0.5-5801

Enhancements in IDR 11.4.0.5-5801 for CDC Replication Engine for Iceberg

• Updated JVM to 17.0.18.1, java version "17.0.18" 2026-01-20 IBM Semeru Runtime Certified Edition 17.0.18.1 (build 17.0.18+8). For details, see IBM Semeru Runtimes fixes for version 17

February 27, 2026

IDR 11.4.0.5-5796

Enhancements in IDR 11.4.0.5-5796 for CDC Replication Engine for Iceberg

• Updated JVM to 17.0.18.0, java version "17.0.18" 2026-01-20 IBM Semeru Runtime Certified Edition 17.0.18.0 (build 17.0.18+8). For details, see IBM Semeru Runtimes fixes for version 17

Known Issues fixed in IDR 11.4.0.5-5796 for CDC Replication Engine for Iceberg

• DT463765 CDC Replication Engines - when starting multiple subscriptions simultaneously, subscription ends on error “java.lang.Error java.security.NoSuchProviderException: no such provider: IBMJCE”

Bugs fixed in IDR 11.4.0.5-5796 for CDC Replication Engine for Iceberg

• Iceberg engine may fail depending on configuration due to issues related to dependency loading with truncate table operations.

February 1, 2026

IDR 11.4.0.5-5792

Enhancements in IDR 11.4.0.5-5792 for CDC Replication Engine for Iceberg

• Replicate from any supported CDC Replication source to an Apache Iceberg Table using the CDC Replication Engine for Iceberg