DMS Postgres Source Error: No tables were found at task initialization

0

I am trying to setup AWS DMS using an RDS Postgres instance as a source. However, I keep getting the following error when starting the replication task:

Last Error No tables were found at task initialization. Either the selected table(s) or schemas(s) no longer exist or no match was found for the table selection pattern(s). If you would like to start a Task that does not initially capture any tables, set Task Setting FailOnNoTablesCaptured to false and restart task. Stop Reason FATAL_ERROR Error Level FATAL

I followed the DMS guide and my source connection test is successful. I am using the master account and have verified the pglogical plugin is installed.

For my Task selection rules, I have tried using the wildcard ("schema-name": "%", "table-name": "%") and targeting specific schema and tables with no success. I have also tried all 3 migration types: full-load, cdc, and full-load-and-cdc. Here is my complete task configuration:

{
    "Logging": {
        "EnableLogging": false,
        "LogComponents": [
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "TRANSFORMATION"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "SOURCE_UNLOAD"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "IO"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "TARGET_LOAD"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "PERFORMANCE"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "SOURCE_CAPTURE"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "SORTER"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "REST_SERVER"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "VALIDATOR_EXT"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "TARGET_APPLY"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "TASK_MANAGER"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "TABLES_MANAGER"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "METADATA_MANAGER"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "FILE_FACTORY"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "COMMON"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "ADDONS"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "DATA_STRUCTURE"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "COMMUNICATION"
            },
            {
                "Severity": "LOGGER_SEVERITY_DEFAULT",
                "Id": "FILE_TRANSFER"
            }
        ],
        "CloudWatchLogGroup": null,
        "CloudWatchLogStream": null
    },
    "StreamBufferSettings": {
        "StreamBufferCount": 3,
        "CtrlStreamBufferSizeInMB": 5,
        "StreamBufferSizeInMB": 8
    },
    "ErrorBehavior": {
        "FailOnNoTablesCaptured": true,
        "ApplyErrorUpdatePolicy": "LOG_ERROR",
        "FailOnTransactionConsistencyBreached": false,
        "RecoverableErrorThrottlingMax": 1800,
        "DataErrorEscalationPolicy": "SUSPEND_TABLE",
        "ApplyErrorEscalationCount": 0,
        "RecoverableErrorStopRetryAfterThrottlingMax": true,
        "RecoverableErrorThrottling": true,
        "ApplyErrorFailOnTruncationDdl": false,
        "DataTruncationErrorPolicy": "LOG_ERROR",
        "ApplyErrorInsertPolicy": "LOG_ERROR",
        "EventErrorPolicy": "IGNORE",
        "ApplyErrorEscalationPolicy": "LOG_ERROR",
        "RecoverableErrorCount": -1,
        "DataErrorEscalationCount": 0,
        "TableErrorEscalationPolicy": "STOP_TASK",
        "RecoverableErrorInterval": 5,
        "ApplyErrorDeletePolicy": "IGNORE_RECORD",
        "TableErrorEscalationCount": 0,
        "FullLoadIgnoreConflicts": true,
        "DataErrorPolicy": "LOG_ERROR",
        "TableErrorPolicy": "SUSPEND_TABLE"
    },
    "TTSettings": {
        "TTS3Settings": null,
        "TTRecordSettings": null,
        "EnableTT": false
    },
    "FullLoadSettings": {
        "CommitRate": 10000,
        "StopTaskCachedChangesApplied": false,
        "StopTaskCachedChangesNotApplied": false,
        "MaxFullLoadSubTasks": 8,
        "TransactionConsistencyTimeout": 600,
        "CreatePkAfterFullLoad": false,
        "TargetTablePrepMode": "DROP_AND_CREATE"
    },
    "TargetMetadata": {
        "ParallelApplyBufferSize": 0,
        "ParallelApplyQueuesPerThread": 0,
        "ParallelApplyThreads": 0,
        "TargetSchema": "",
        "InlineLobMaxSize": 0,
        "ParallelLoadQueuesPerThread": 0,
        "SupportLobs": false,
        "LobChunkSize": 0,
        "TaskRecoveryTableEnabled": false,
        "ParallelLoadThreads": 0,
        "LobMaxSize": 0,
        "BatchApplyEnabled": false,
        "FullLobMode": false,
        "LimitedSizeLobMode": false,
        "LoadMaxFileSize": 0,
        "ParallelLoadBufferSize": 0
    },
    "BeforeImageSettings": null,
    "ControlTablesSettings": {
        "historyTimeslotInMinutes": 5,
        "HistoryTimeslotInMinutes": 5,
        "StatusTableEnabled": false,
        "SuspendedTablesTableEnabled": false,
        "HistoryTableEnabled": false,
        "ControlSchema": "",
        "FullLoadExceptionTableEnabled": false
    },
    "LoopbackPreventionSettings": null,
    "CharacterSetSettings": null,
    "FailTaskWhenCleanTaskResourceFailed": false,
    "ChangeProcessingTuning": {
        "StatementCacheSize": 50,
        "CommitTimeout": 1,
        "BatchApplyPreserveTransaction": true,
        "BatchApplyTimeoutMin": 1,
        "BatchSplitSize": 0,
        "BatchApplyTimeoutMax": 30,
        "MinTransactionSize": 1000,
        "MemoryKeepTime": 60,
        "BatchApplyMemoryLimit": 500,
        "MemoryLimitTotal": 1024
    },
    "ChangeProcessingDdlHandlingPolicy": {
        "HandleSourceTableDropped": true,
        "HandleSourceTableTruncated": true,
        "HandleSourceTableAltered": true
    },
    "PostProcessingRules": null
}
1 Answer
1
Accepted Answer

the only thing which i could think is whether you have selected the right database name while creating the endpoint. the table mapping would have further selection option of schema/table names it could be %/% allowing selection of all schemas and tables from the source database

answered 2 months ago
  • Turns out this was indeed my problem. I was attempting to use the default postgres database instead of the one I needed. Thanks for the help and sanity check 👍

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