{"Entry":{"collection":"protocol","key":"logical-stream-abort","name":"Stream Abort (logical replication)","aliases":["Stream Abort"],"metadata":{"aliases":["Stream Abort"],"category":"Logical replication formats","content_hash":"260d2bf362556e4c1fc9be9aa9f24645a95a41e2d6d8562c804a39f9b6d8cdf2","imported_at":"2026-09-30T00:40:44.646464+08:00","name":"Stream Abort (logical replication)","name_zh":"","slug":"logical-stream-abort","summary":"Logical replication Stream Abort format. Identifies the message as a stream abort message."}},"Definition":{"Collection":"protocol","Key":"logical-stream-abort","SourceDatabase":"center","Version":"18","SourceTable":"protocol_message","SourceKey":"logical-stream-abort","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","Facts":{"comparison_data":{"fields":[{"description":"Identifies the message as a stream abort message.","format":"Byte1('A')"},{"description":"Xid of the transaction.","format":"Int32 (TransactionId)"},{"description":"Xid of the subtransaction (will be same as xid of the transaction for top-level transactions).","format":"Int32 (TransactionId)"},{"description":"The LSN of the abort operation, present only when streaming is set to parallel. This field is available since protocol version 4.","format":"Int64 (XLogRecPtr)"},{"description":"Abort timestamp of the transaction, present only when streaming is set to parallel. The value is in number of microseconds since PostgreSQL epoch (2000-01-01). This field is available since protocol version 4.","format":"Int64 (TimestampTz)"}],"layer":"logical replication"},"comparison_hash":"ba66d8ba096cf90d5ed7f7adfa2c1fde83adc546efc9f1f5c46c6b0f69cb508b","description":["Logical replication Stream Abort format. Identifies the message as a stream abort message."],"facts":[{"label":"Layer","value":"Logical replication payload; distinct from the frontend/backend message envelope"},{"label":"First field","value":"Byte1('A')"}],"fields":[{"description":"Identifies the message as a stream abort message.","format":"Byte1('A')"},{"description":"Xid of the transaction.","format":"Int32 (TransactionId)"},{"description":"Xid of the subtransaction (will be same as xid of the transaction for top-level transactions).","format":"Int32 (TransactionId)"},{"description":"The LSN of the abort operation, present only when streaming is set to parallel. This field is available since protocol version 4.","format":"Int64 (XLogRecPtr)"},{"description":"Abort timestamp of the transaction, present only when streaming is set to parallel. The value is in number of microseconds since PostgreSQL epoch (2000-01-01). This field is available since protocol version 4.","format":"Int64 (TimestampTz)"}],"manual_html":"\u003cdl\u003e\u003cdd\u003e\n\u003cdiv class=\"variablelist\"\u003e\n\u003cdl class=\"variablelist\"\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003eByte1('A')\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eIdentifies the message as a stream abort message.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003eInt32 (TransactionId)\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eXid of the transaction.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003eInt32 (TransactionId)\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eXid of the subtransaction (will be same as xid of the transaction for top-level transactions).\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003eInt64 (XLogRecPtr)\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eThe LSN of the abort operation, present only when streaming is set to parallel. This field is available since protocol version 4.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003eInt64 (TimestampTz)\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eAbort timestamp of the transaction, present only when streaming is set to parallel. The value is in number of microseconds since PostgreSQL epoch (2000-01-01). This field is available since protocol version 4.\u003c/p\u003e\n\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003c/dd\u003e\u003c/dl\u003e","manual_path":"/docs/18/protocol-logicalrep-message-formats.html","related":[{"label":"Streaming replication protocol","url":"/docs/18/protocol-replication.html"},{"label":"Logical Decoding Plugins","url":"/wiki/decode/?v=18"}],"release":{"channel":"stable","label":"18.6","major":"18","ref":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","revision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"},"sections":[{"paragraphs":["This section describes the detailed format of each logical replication message. These messages are either returned by the replication slot SQL interface or are sent by a walsender. In the case of a walsender, they are encapsulated inside replication protocol WAL messages as described in Section 54.4 , and generally obey the same message flow as physical replication. The following messages (Stream Start, Stream Stop, Stream Commit, and Stream Abort) are available since protocol version 2. The following messages (Begin Prepare, Prepare, Commit Prepared, Rollback Prepared, Stream Prepare) are available since protocol version 3. The following message parts are shared by the above messages."],"title":"Protocol context"}],"signature":"Stream Abort","sources":[{"label":"PostgreSQL 18 English manual","path":"protocol-logicalrep-message-formats.html","sha256":"e976b008206820fbeb1eba226e69bb7c00af157372c3545375d1b5053c76d0ad","url":"/docs/18/protocol-logicalrep-message-formats.html#PROTOCOL-LOGICALREP-MESSAGE-FORMATS-STREAM-ABORT"}],"tables":[{"columns":[{"key":"c0","label":"Position"},{"key":"c1","label":"Format"},{"key":"c2","label":"Meaning"}],"key":"fields","rows":[{"c0":"1","c1":"Byte1('A')","c2":"Identifies the message as a stream abort message."},{"c0":"2","c1":"Int32 (TransactionId)","c2":"Xid of the transaction."},{"c0":"3","c1":"Int32 (TransactionId)","c2":"Xid of the subtransaction (will be same as xid of the transaction for top-level transactions)."},{"c0":"4","c1":"Int64 (XLogRecPtr)","c2":"The LSN of the abort operation, present only when streaming is set to parallel. This field is available since protocol version 4."},{"c0":"5","c1":"Int64 (TimestampTz)","c2":"Abort timestamp of the transaction, present only when streaming is set to parallel. The value is in number of microseconds since PostgreSQL epoch (2000-01-01). This field is available since protocol version 4."}],"title":"Fields in documented order"}]},"ManualEvidence":{"manual_path":"/docs/18/protocol-logicalrep-message-formats.html","release":{"channel":"stable","label":"18.6","major":"18","ref":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","revision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"},"sources":[{"label":"PostgreSQL 18 English manual","path":"protocol-logicalrep-message-formats.html","sha256":"e976b008206820fbeb1eba226e69bb7c00af157372c3545375d1b5053c76d0ad","url":"/docs/18/protocol-logicalrep-message-formats.html#PROTOCOL-LOGICALREP-MESSAGE-FORMATS-STREAM-ABORT"}]},"MeasuredEvidence":{}},"Text":{"Collection":"protocol","Key":"logical-stream-abort","SourceDatabase":"center","Version":"18","Locale":"en","Title":"Stream Abort (logical replication)","Summary":"Logical replication Stream Abort format. Identifies the message as a stream abort message.","BodyHTML":"\u003cdl\u003e\u003cdd\u003e\n\u003cdiv\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cspan\u003eByte1(\u0026#39;A\u0026#39;)\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eIdentifies the message as a stream abort message.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan\u003eInt32 (TransactionId)\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eXid of the transaction.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan\u003eInt32 (TransactionId)\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eXid of the subtransaction (will be same as xid of the transaction for top-level transactions).\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan\u003eInt64 (XLogRecPtr)\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eThe LSN of the abort operation, present only when streaming is set to parallel. This field is available since protocol version 4.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan\u003eInt64 (TimestampTz)\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eAbort timestamp of the transaction, present only when streaming is set to parallel. The value is in number of microseconds since PostgreSQL epoch (2000-01-01). This field is available since protocol version 4.\u003c/p\u003e\n\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003c/dd\u003e\u003c/dl\u003e","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","ContentHash":"73c94dde1065b1806a0199a34e003710700100531b95fb9bec6cfc8348b02397","Payload":{"description":["Logical replication Stream Abort format. Identifies the message as a stream abort message."],"manual_html":"\u003cdl\u003e\u003cdd\u003e\n\u003cdiv class=\"variablelist\"\u003e\n\u003cdl class=\"variablelist\"\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003eByte1('A')\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eIdentifies the message as a stream abort message.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003eInt32 (TransactionId)\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eXid of the transaction.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003eInt32 (TransactionId)\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eXid of the subtransaction (will be same as xid of the transaction for top-level transactions).\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003eInt64 (XLogRecPtr)\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eThe LSN of the abort operation, present only when streaming is set to parallel. This field is available since protocol version 4.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003eInt64 (TimestampTz)\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eAbort timestamp of the transaction, present only when streaming is set to parallel. The value is in number of microseconds since PostgreSQL epoch (2000-01-01). This field is available since protocol version 4.\u003c/p\u003e\n\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003c/dd\u003e\u003c/dl\u003e","related":[{"label":"Streaming replication protocol","url":"/docs/18/protocol-replication.html"},{"label":"Logical Decoding Plugins","url":"/wiki/decode/?v=18"}],"sections":[{"paragraphs":["This section describes the detailed format of each logical replication message. These messages are either returned by the replication slot SQL interface or are sent by a walsender. In the case of a walsender, they are encapsulated inside replication protocol WAL messages as described in Section 54.4 , and generally obey the same message flow as physical replication. The following messages (Stream Start, Stream Stop, Stream Commit, and Stream Abort) are available since protocol version 2. The following messages (Begin Prepare, Prepare, Commit Prepared, Rollback Prepared, Stream Prepare) are available since protocol version 3. The following message parts are shared by the above messages."],"title":"Protocol context"}],"tables":[{"columns":[{"key":"c0","label":"Position"},{"key":"c1","label":"Format"},{"key":"c2","label":"Meaning"}],"key":"fields","rows":[{"c0":"1","c1":"Byte1('A')","c2":"Identifies the message as a stream abort message."},{"c0":"2","c1":"Int32 (TransactionId)","c2":"Xid of the transaction."},{"c0":"3","c1":"Int32 (TransactionId)","c2":"Xid of the subtransaction (will be same as xid of the transaction for top-level transactions)."},{"c0":"4","c1":"Int64 (XLogRecPtr)","c2":"The LSN of the abort operation, present only when streaming is set to parallel. This field is available since protocol version 4."},{"c0":"5","c1":"Int64 (TimestampTz)","c2":"Abort timestamp of the transaction, present only when streaming is set to parallel. The value is in number of microseconds since PostgreSQL epoch (2000-01-01). This field is available since protocol version 4."}],"title":"Fields in documented order"}]}},"RequestedLocale":"zh-Hans","Fallback":true,"Versions":["14","15","16","17","18","19","20"],"Locales":["en"],"Signatures":null,"Spellings":null,"SQLState":null,"Evidence":null}