• The following feature is new in Oracle Database 23ai:

  • The maximum number of columns allowed in a database table or view has been increased from 1000 to 4096.

    See: MAX_COLUMNS

• The following initialization parameters are new in Oracle Database 23ai:

  • ALLOW_LEGACY_RECO_PROTOCOL

  • BLOCKCHAIN_TABLE_RETENTION_THRESHOLD

  • CLIENT_PREFETCH_ROWS

  • DB_FLASHBACK_LOG_DEST

  • DB_FLASHBACK_LOG_DEST_SIZE

  • DB_RECOVERY_AUTO_REKEY

  • ERROR_MESSAGE_DETAILS

  • GROUP_BY_POSITION_ENABLED

  • HYBRID_READ_ONLY

  • IDENTITY_PROVIDER_CONFIG

  • IDENTITY_PROVIDER_TYPE

  • INMEMORY_OPTIMIZED_DATE

  • IORM_LIMIT_POLICY

  • JSON_BEHAVIOR

  • JSON_EXPRESSION_CHECK

  • MAX_COLUMNS

  • MAX_SAGA_DURATION

  • MEMOPTIMIZE_WRITE_AREA_SIZE

  • MEMOPTIMIZE_WRITES

  • MEMORY_MAX_SIZE

  • MEMORY_SIZE

  • MLE_PROG_LANGUAGES

  • PLSQL_IMPLICIT_CONVERSION_BOOL

  • PRIORITY_TXNS_HIGH_WAIT_TARGET

  • PRIORITY_TXNS_MEDIUM_WAIT_TARGET

  • PRIORITY_TXNS_MODE

  • READ_ONLY

  • RESOURCE_MANAGER_CPU_SCOPE

  • RESULT_CACHE_AUTO_BLOCKLIST

  • RESULT_CACHE_INTEGRITY

  • SAGA_HIST_RETENTION

  • SESSION_EXIT_ON_PACKAGE_STATE_ERROR

  • SHARD_ENABLE_RAFT_FOLLOWER_READ

  • SHARD_RAFT_LOGFILE_SIZE

  • SQL_ERROR_MITIGATION

  • SQL_HISTORY_ENABLED

  • SQL_TRANSPILER

  • TABLESPACE_ENCRYPTION

  • TIME_AT_DBTIMEZONE

  • TRANSACTION_RECOVERY

  • TRUE_CACHE

  • TXN_PRIORITY

  • XML_CLIENT_SIDE_DECODING

  • XML_PARAMS

• The following static data dictionary views are new in Oracle Database 23ai:

  • DBA_ADDM_PENDING_AUTOTASKS

  • DBA_ADDM_SCHEDULED_AUTOTASKS

  • DBA_AIM_PERF_FEATURES

  • ALL_ANNOTATION_VALUES, DBA_ANNOTATION_VALUES, and USER_ANNOTATION_VALUES

  • ALL_ANNOTATIONS, DBA_ANNOTATIONS, and USER_ANNOTATIONS

  • ALL_ANNOTATIONS_USAGE, DBA_ANNOTATIONS_USAGE, and USER_ANNOTATIONS_USAGE

  • DBA_AUTO_CLUSTERING_CONFIG

  • DBA_AUTO_CLUSTERING_RECOMMENDATIONS

  • ALL_BLOCKCHAIN_ROW_VERSION_COLS, DBA_BLOCKCHAIN_ROW_VERSION_COLS, and USER_BLOCKCHAIN_ROW_VERSION_COLS

  • ALL_BLOCKCHAIN_ROW_VERSION_HISTORY, DBA_BLOCKCHAIN_ROW_VERSION_HISTORY, and USER_BLOCKCHAIN_ROW_VERSION_HISTORY

  • ALL_BLOCKCHAIN_TABLE_CHAINS, DBA_BLOCKCHAIN_TABLE_CHAINS, and USER_BLOCKCHAIN_TABLE_CHAINS

  • ALL_BLOCKCHAIN_TABLE_EPOCHS, DBA_BLOCKCHAIN_TABLE_EPOCHS, and USER_BLOCKCHAIN_TABLE_EPOCHS

  • ALL_BLOCKCHAIN_TABLE_HASH_COL_ORDER, DBA_BLOCKCHAIN_TABLE_HASH_COL_ORDER, and USER_BLOCKCHAIN_TABLE_HASH_COL_ORDER

  • DBA_BLOCKER_RESOLVER_PARAMETERS

  • DBA_DDL_REGS and USER_DDL_REGS

  • ALL_DOMAIN_COLS, DBA_DOMAIN_COLS, and USER_DOMAIN_COLS

  • ALL_DOMAIN_CONSTRAINTS, DBA_DOMAIN_CONSTRAINTS, and USER_DOMAIN_CONSTRAINTS

  • ALL_DOMAINS, DBA_DOMAINS, and USER_DOMAINS

  • DBA_HIST_OPTIMIZER_ENV_DETAILS

  • ALL_HIST_SAGAS, DBA_HIST_SAGAS, and USER_HIST_SAGAS

  • ALL_IMMUTABLE_ROW_VERSION_COLS, DBA_IMMUTABLE_ROW_VERSION_COLS, and USER_IMMUTABLE_ROW_VERSION_COLS

  • ALL_IMMUTABLE_ROW_VERSION_HISTORY, DBA_IMMUTABLE_ROW_VERSION_HISTORY, and USER_IMMUTABLE_ROW_VERSION_HISTORY

  • ALL_IMMUTABLE_TABLE_COLUMNS, DBA_IMMUTABLE_TABLE_COLUMNS, and USER_IMMUTABLE_TABLE_COLUMNS

  • ALL_IMMUTABLE_TABLE_EPOCHS, DBA_IMMUTABLE_TABLE_EPOCHS, and USER_IMMUTABLE_TABLE_EPOCHS

  • ALL_INCOMPLETE_SAGAS, DBA_INCOMPLETE_SAGAS, and USER_INCOMPLETE_SAGAS

  • DBA_INMEMORY_ADVISOR_RECOMMENDATION

  • ALL_JSON_COLLECTION_TABLES, DBA_JSON_COLLECTION_TABLES, and USER_JSON_COLLECTION_TABLES

  • ALL_JSON_COLLECTIONS, DBA_JSON_COLLECTIONS, and USER_JSON_COLLECTIONS

  • ALL_JSON_DOMAIN_SCHEMA_COLUMNS, DBA_JSON_DOMAIN_SCHEMA_COLUMNS, and USER_JSON_DOMAIN_SCHEMA_COLUMNS

  • ALL_JSON_DUALITY_VIEW_LINKS, DBA_JSON_DUALITY_VIEW_LINKS, and USER_JSON_DUALITY_VIEW_LINKS

  • ALL_JSON_DUALITY_VIEW_TAB_COLS, DBA_JSON_DUALITY_VIEW_TAB_COLS, and USER_JSON_DUALITY_VIEW_TAB_COLS

  • ALL_JSON_DUALITY_VIEW_TABS, DBA_JSON_DUALITY_VIEW_TABS, and USER_JSON_DUALITY_VIEW_TABS

  • ALL_JSON_DUALITY_VIEWS, DBA_JSON_DUALITY_VIEWS, and USER_JSON_DUALITY_VIEWS

  • ALL_JSON_INDEXES, DBA_JSON_INDEXES, and USER_JSON_INDEXES

  • ALL_JSON_SCHEMA_COLUMNS, DBA_JSON_SCHEMA_COLUMNS, and USER_JSON_SCHEMA_COLUMNS

  • DBA_KAFKA_APPLICATIONS and USER_KAFKA_APPLICATIONS

  • DBA_KAFKA_CLUSTERS and USER_KAFKA_CLUSTERS

  • DBA_KAFKA_LOAD_METRICS and USER_KAFKA_LOAD_METRICS

  • USER_KAFKA_MESSAGES

  • DBA_KAFKA_OPS and USER_KAFKA_OPS

  • DBA_KAFKA_OPS_RESULTS and USER_KAFKA_OPS_RESULTS

  • DBA_KAFKA_PARTITIONS and USER_KAFKA_PARTITIONS

  • ALL_MLE_ENV_IMPORTS, DBA_MLE_ENV_IMPORTS, and USER_MLE_ENV_IMPORTS

  • ALL_MLE_ENVS, DBA_MLE_ENVS, and USER_MLE_ENVS

  • ALL_MLE_MODULES, DBA_MLE_MODULES, and USER_MLE_MODULES

  • ALL_MLE_PROCEDURES, DBA_MLE_PROCEDURES, and USER_MLE_PROCEDURES

  • ALL_MVIEW_DETAIL_LOGICAL_PARTITION, DBA_MVIEW_DETAIL_LOGICAL_PARTITION, and USER_MVIEW_DETAIL_LOGICAL_PARTITION

  • ALL_PG_EDGE_RELATIONSHIPS, DBA_PG_EDGE_RELATIONSHIPS, and USER_PG_EDGE_RELATIONSHIPS

  • ALL_PG_ELEMENT_LABELS, DBA_PG_ELEMENT_LABELS, and USER_PG_ELEMENT_LABELS

  • ALL_PG_ELEMENTS, DBA_PG_ELEMENTS, and USER_PG_ELEMENTS

  • ALL_PG_KEYS, DBA_PG_KEYS, and USER_PG_KEYS

  • ALL_PG_LABEL_PROPERTIES, DBA_PG_LABEL_PROPERTIES, and USER_PG_LABEL_PROPERTIES

  • ALL_PG_LABELS, DBA_PG_LABELS, and USER_PG_LABELS

  • ALL_PG_PROP_DEFINITIONS, DBA_PG_PROP_DEFINITIONS, and USER_PG_PROP_DEFINITIONS

  • ALL_PROPERTY_GRAPHS, DBA_PROPERTY_GRAPHS, and USER_PROPERTY_GRAPHS

  • DBA_QUARANTINED_TRANSACTIONS

  • ALL_SAGA_BROKERS, DBA_SAGA_BROKERS, and USER_SAGA_BROKERS

  • ALL_SAGA_DETAILS, DBA_SAGA_DETAILS, and USER_SAGA_DETAILS

  • ALL_SAGA_ERRORS, DBA_SAGA_ERRORS, and USER_SAGA_ERRORS

  • ALL_SAGA_FINALIZATION, DBA_SAGA_FINALIZATION, and USER_SAGA_FINALIZATION

  • ALL_SAGA_PARTICIPANT_SET, DBA_SAGA_PARTICIPANT_SET, and USER_SAGA_PARTICIPANT_SET

  • ALL_SAGA_PARTICIPANTS, DBA_SAGA_PARTICIPANTS, and USER_SAGA_PARTICIPANTS

  • ALL_SAGA_PENDING, DBA_SAGA_PENDING, and USER_SAGA_PENDING

  • ALL_SAGAS, DBA_SAGAS, and USER_SAGAS

  • DBA_SCHEDULER_IN_MEMORY_TRACE

  • DBA_SCHEMA_PRIVS, ROLE_SCHEMA_PRIVS, SESSION_SCHEMA_PRIVS, and USER_SCHEMA_PRIVS

  • DBA_SQL_ERROR_MITIGATIONS

  • DBA_SQL_FIREWALL_ALLOW_LISTS

  • DBA_SQL_FIREWALL_ALLOWED_IP_ADDR

  • DBA_SQL_FIREWALL_ALLOWED_OS_PROG

  • DBA_SQL_FIREWALL_ALLOWED_OS_USER

  • DBA_SQL_FIREWALL_ALLOWED_SQL

  • DBA_SQL_FIREWALL_CAPTURE_LOGS

  • DBA_SQL_FIREWALL_CAPTURES

  • DBA_SQL_FIREWALL_SESSION_LOGS

  • DBA_SQL_FIREWALL_SQL_LOGS

  • DBA_SQL_FIREWALL_STATUS

  • DBA_SQL_FIREWALL_VIOLATIONS

  • DBA_SYS_PRIVS_ALL, ROLE_SYS_PRIVS_ALL, SESSION_PRIVS_ALL, and USER_SYS_PRIVS_ALL

  • ALL_TABLE_ACCESS_STATS, DBA_TABLE_ACCESS_STATS, and USER_TABLE_ACCESS_STATS

  • ALL_TABLE_VIRTUAL_COLUMNS, DBA_TABLE_VIRTUAL_COLUMNS, and USER_TABLE_VIRTUAL_COLUMNS

  • ALL_TXEVENTQ_MIGRATION_STATUS, DBA_TXEVENTQ_MIGRATION_STATUS and USER_TXEVENTQ_MIGRATION_STATUS

  • DBA_UNUSED_SCHEMA_PRIVS

  • DBA_UNUSED_SCHEMA_PRIVS_PATH

  • DBA_USED_SCHEMA_PRIVS

  • DBA_USED_SCHEMA_PRIVS_PATH

  • SHARD_RAFT_PARAMETERS

• The following tables are new in Oracle Database 23ai:

  • DBMS_KAFKA_APPLICATIONS

  • DBMS_KAFKA_CLUSTERS

  • DBMS_KAFKA_LOAD_METRICS

  • DBMS_KAFKA_MESSAGES

  • DBMS_KAFKA_OPS

  • DBMS_KAFKA_OPS_RESULTS

  • DBMS_KAFKA_PARTITIONS

  • DBMS_KAFKA_SEC_ALLOWED_PROPERTIES

• The following dynamic performance views are new in Oracle Database 23ai:

  • V$AUTO_IM_FEATURES

  • V$DATAPUMP_PROCESS_INFO

  • V$DATAPUMP_SESSIONWAIT_INFO

  • V$DG_BROKER_ROLE_CHANGE

  • V$DIAG_ATTENTION

  • V$DIAG_INCIDENT_FILE_CONTENTS

  • V$ENABLEDSCHEMAPRIVS

  • V$FAST_START_FAILOVER_CONFIG

  • V$FLASHBACK_LOG_DEST

  • V$INMEMORY_SIZE_ADVICE

  • V$OFS_THREADS

  • V$PX_PROCESS_DETAIL

  • V$PX_SERVER

  • V$RAC_TWO_STAGE_ROLLING_UPDATES

  • V$RECOVERY_WORKER

  • V$SCHEDULER_IN_MEMORY_TRACE

  • V$SECUREFILE_SHRINK

  • V$SERVICE_DRAIN_TIMEOUT_ADVICE

  • V$SHARD_ACK_RECEIVER

  • V$SHARD_ACK_SENDER

  • V$SHARD_APPLY_COORDINATOR

  • V$SHARD_APPLY_LCR_READER

  • V$SHARD_APPLY_READER

  • V$SHARD_APPLY_SERVER

  • V$SHARD_LCR_LOGS

  • V$SHARD_LCR_PERSISTER

  • V$SHARD_LCR_PRODUCER

  • V$SHARD_NETWORK_RECEIVER

  • V$SHARD_NETWORK_SENDER

  • V$SHARD_REPLICATION_UNIT

  • V$SHARED_POOL_LRU_EFFORT

  • V$SQL_HISTORY

  • V$SQL_SHARED_CURSOR_DIAG

  • V$TABLE_ACCESS_STATS

  • V$TDM_STATS

  • V$TEXT_WAITING_EVENTS

  • V$TRUE_CACHE

The following features are deprecated in Oracle Database 23ai, and may be desupported in a future release:

Initialization parameters:

• ENCRYPT_NEW_TABLESPACES

• ONE_STEP_PLUGIN_FOR_PDB_WITH_TDE

• PRE_PAGE_SGA

• REMOTE_OS_ROLES

Static data dictionary views:

• DBA_HANG_MANAGER_PARAMETERS

Dynamic performance views:

• V$FS_FAILOVER_STATS

• V$PQ_SLAVE

• V$RECOVERY_SLAVE

The following features are desupported in Oracle Database 23ai:

• The OPTIMIZER_SECURE_VIEW_MERGING initialization parameter

• The V$EMX_USAGE_STATS view