Audit Log File v13

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The audit log file can be generated in either CSV or XML format depending upon the setting of the edb_audit configuration parameter.

The information in the audit log is based on the logging performed by PostgreSQL as described in the section “Using CSV-Format Log Output” within Section “Error Reporting and Logging” in the PostgreSQL core documentation, available at:

https://www.postgresql.org/docs/current/static/runtime-config-logging.html

The following table lists the fields in the order they appear in the CSV audit log format. The table contains the following information:

Field. Name of the field as shown in the sample table definition in the PostgreSQL documentation as previously referenced.
XML Element/Attribute. For the XML format, name of the XML element and its attribute (if used), referencing the value.
Data Type. Data type of the field as given by the PostgreSQL sample table definition.
Description. Description of the field.

The fields that do not have any values for logging appear as consecutive commas (,,) in the CSV format.

Field	XML Element/Attribute	Data Type	Description
`log_time`	`event/log_time`	`timestamp with time zone`	Log date/time of the statement.
`user_name`	`event/user`	`text`	Database user who executed the statement.
`database_name`	`event/database`	`text`	Database in which the statement was executed.
`process_id`	`event/process_id`	`integer`	Operating system process ID in which the statement was executed.
`connection_from`	`event/remote_host`	`text`	Host and port location from where the statement was executed.
`session_id`	`event/session_id`	`text`	Session ID in which the statement was executed.
`session_line_num`	`event/session_line_num`	`bigint`	Order of the statement within the session.
`process_status`	`event/process_status`	`text`	Processing status.
`session_start_time`	`event/session_start_time`	`timestamp with time zone`	Date/time when the session was started.
`virtual_transaction_id`	`event/virtual_transaction_id`	`text`	Virtual transaction ID of the statement.
`transaction_id`	`event/transaction_id`	`bigint`	Regular transaction ID of the statement.
`error_severity`	`error_severity`	`text`	Statement severity. Values are `AUDIT` for audited statements and `ERROR` for any resulting error messages.
`sql_state_code`	`event/sql_state_code`	`text`	SQL state code returned for the statement. The `sql_state_code` is not logged when its value is 00000 for XML log format.
`message`	`message`	`text`	The SQL statement that was attempted for execution.
`detail`	`detail`	`text`	Error message detail.
`hint`	`hint`	`text`	Hint for error.
`internal_query`	`internal_query`	`text`	Internal query that led to the error, if any.
`internal_query_pos`	`internal_query_pos`	`integer`	Character count of the error position therein.
`context`	`context`	`text`	Error context.
`query`	`query`	`text`	User query that led to the error. (For errors only)
`query_pos`	`query_pos`	`integer`	Character count of the error position therein. (For errors only)
`location`	`location`	`text`	Location of the error in the source code. The location field will be populated if `log_error_verbosity` is set to verbose.
`application_name`	`event/application_name`	`text`	Name of the application from which the statement was executed. (for example, `psql.bin`).
`backend_type`	`event/backend_type`	`text`	The `backend_type` corresponds to what `pg_stat_activity.backend_type` shows and is added as a column to the csv log.
`command_tag`	`event/command_tag`	`text`	SQL command of the statement.
`audit_tag`	`event/audit_tag`	`text`	Value specified by the `audit_tag` parameter in the configuration file.
`type`	`event/type`	`text`	Determines the audit `event_type` to identify messages in the log.

The following examples are generated in the CSV and XML formats.

The non-default audit settings in the postgresql.conf file are as follows:

logging_collector = 'on'
edb_audit = 'csv'
edb_audit_connect = 'all'
edb_audit_disconnect = 'all'
edb_audit_statement = 'ddl, dml, select, error'
edb_audit_tag = 'edbaudit'

The edb_audit parameter is changed to xml when generating the XML format.

The audited session is the following:

$ psql edb enterprisedb
Password for user enterprisedb:
psql.bin (13.0.0)
Type "help" for help.

edb=# CREATE SCHEMA edb;
CREATE SCHEMA
edb=# SET search_path TO edb;
SET
edb=# CREATE TABLE dept (
edb(#     deptno          NUMBER(2) NOT NULL CONSTRAINT dept_pk PRIMARY KEY,
edb(#     dname           VARCHAR2(14) CONSTRAINT dept_dname_uq UNIQUE,
edb(#     loc             VARCHAR2(13)
edb(# );
CREATE TABLE
edb=# INSERT INTO dept VALUES (10,'ACCOUNTING','NEW YORK');
INSERT 0 1
edb=# UPDATE department SET loc = 'BOSTON' WHERE deptno = 10;
ERROR:  relation "department" does not exist
LINE 1: UPDATE department SET loc = 'BOSTON' WHERE deptno = 10;
            ^
edb=# UPDATE dept SET loc = 'BOSTON' WHERE deptno = 10;
UPDATE 1
edb=# SELECT * FROM dept;
 deptno |   dname    |  loc
--------+------------+--------
     10 | ACCOUNTING | BOSTON
(1 row)

edb=# \q

CSV Audit Log File

The following is the CSV format of the audit log file.

Each audit log entry has been split and displayed across multiple lines, and a blank line has been inserted between the audit log entries for more clarity in the appearance of the results.

2020-05-22 16:53:37.817 IST,"enterprisedb","edb",55279,"[local]",5ec7b639.
d7ef,1,"authentication",2020-05-22 16:53:37 IST,4/21,0,AUDIT,00000,
"connection authorized:user=enterprisedb database=edb",,,,,,,,,"","client
backend","","edbaudit","connect"

2020-05-22 16:53:42.279 IST,"enterprisedb","edb",55279,"[local]",5ec7b639.
d7ef,2,"idle",2020-05-22 16:53:37 IST,4/23,0,AUDIT,00000,"statement: CREATE
SCHEMA edb;",,,,,,,,,"psql","client backend","CREATE SCHEMA","edbaudit",
"create"

2020-05-22 16:54:07.896 IST,"enterprisedb","edb",55279,"[local]",5ec7b639.
d7ef,3,"idle",2020-05-22 16:53:37 IST,4/25,0,AUDIT,00000,"statement: CREATE
TABLE dept (
        deptno          NUMBER(2) NOT NULL CONSTRAINT dept_pk PRIMARY KEY,
        dname           VARCHAR2(14) CONSTRAINT dept_dname_uq UNIQUE,
        loc             VARCHAR2(13)
);",,,,,,,,,"psql","client backend","CREATE TABLE","edbaudit","create"

2020-05-22 16:54:20.500 IST,"enterprisedb","edb",55279,"[local]",5ec7b639.
d7ef,4,"idle",2020-05-22 16:53:37 IST,4/26,0,AUDIT,00000,"statement: INSERT
INTO dept VALUES(10,'ACCOUNTING','NEW YORK');",,,,,,,,,"psql","client backend
","INSERT","edbaudit","insert"

2020-05-22 16:54:34.821 IST,"enterprisedb","edb",55279,"[local]",5ec7b639.
d7ef,5,"idle",2020-05-22 16:53:37 IST,4/27,0,AUDIT,00000,"statement: UPDATE
department SET loc = 'BOSTON' WHERE deptno = 10;",,,,,,,,,"psql","client
backend","UPDATE","edbaudit","update"

2020-05-22 16:54:34.821 IST,"enterprisedb","edb",55279,"[local]",5ec7b639.
d7ef,6,"UPDATE",2020-05-22 16:53:37 IST,4/27,0,ERROR,42P01,"relation "
"department"" does not exist",,,,,,"UPDATE department SET loc = 'BOSTON'
WHERE deptno = 10;",8,,"psql","client backend","UPDATE","edbaudit","error"

2020-05-22 16:54:51.308 IST,"enterprisedb","edb",55279,"[local]",5ec7b639.
d7ef,7,"idle",2020-05-22 16:53:37 IST,4/28,0,AUDIT,00000,"statement: UPDATE
dept SET loc = 'BOSTON' WHERE deptno = 10;",,,,,,,,,"psql","client backend",
"UPDATE","edbaudit","update"

2020-05-22 16:55:00.774 IST,"enterprisedb","edb",55279,"[local]",5ec7b639.
d7ef,8,"idle",2020-05-22 16:53:37 IST,4/29,0,AUDIT,00000,"statement: SELECT *
FROM dept;",,,,,,,,,"psql","client backend","SELECT","edbaudit","select"

2020-05-22 16:55:06.548 IST,"enterprisedb","edb",55279,"[local]",5ec7b639.
d7ef,9,"idle",2020-05-22 16:53:37 IST,,0,AUDIT,00000,"disconnection: session
time: 0:01:28.732 user=enterprisedb database=edb host=[local]",,,,,,,,,"psql",
"client backend","","edbaudit","disconnect"

XML Audit Log File

The following is the XML format of the audit log file. The output has been formatted for more clarity in the appearance in the example.

<event user="enterprisedb" database="edb" process_id="5941" remote_host=
"[local]"
       session_id="5ec7ac4d.1735" session_line_num="1" process_status=
       "authentication"
       session_start_time="2020-05-22 16:11:17 IST" log_time="2020-05-22
       16:11:17.806 IST"
       virtual_transaction_id="4/19" type="connect" audit_tag="edbaudit"
       backend_type="client backend">
          <error_severity>AUDIT</error_severity>
          <message>connection authorized: user=enterprisedb database=edb</
          message>
</event>
<event user="enterprisedb" database="edb" process_id="5941" remote_host=
"[local]"
       session_id="5ec7ac4d.1735" session_line_num="2" process_status="idle"
       session_start_time="2020-05-22 16:11:17 IST" log_time="2020-05-22
       16:11:32.558 IST"
       virtual_transaction_id="4/21" type="create" command_tag="CREATE SCHEMA
       " audit_tag="edbaudit" application_name="psql" backend_type="client
       backend">
          <error_severity>AUDIT</error_severity>
          <message>statement: CREATE SCHEMA edb;</message>
</event>
<event user="enterprisedb" database="edb" process_id="5941" remote_host=
"[local]"
       session_id="5ec7ac4d.1735" session_line_num="3" process_status="idle"
       session_start_time="2020-05-22 16:11:17 IST" log_time="2020-05-22
       16:12:00.199 IST"
       virtual_transaction_id="4/23" type="create" command_tag="CREATE TABLE"
       audit_tag="edbaudit" application_name="psql" backend_type="client
       backend">
          <error_severity>AUDIT</error_severity>
          <message>statement: CREATE TABLE dept (
              deptno     NUMBER(2) NOT NULL CONSTRAINT dept_pk PRIMARY KEY,
              dname      VARCHAR2(14) CONSTRAINT dept_dname_uq UNIQUE,
              loc        VARCHAR2(13));
          </message>
</event>
<event user="enterprisedb" database="edb" process_id="5941" remote_host=
"[local]"
       session_id="5ec7ac4d.1735" session_line_num="4" process_status="idle"
       session_start_time="2020-05-22 16:11:17 IST" log_time="2020-05-22
       16:12:10.992 IST"
       virtual_transaction_id="4/24" type="insert" command_tag="INSERT" audit_
       tag="edbaudit" application_name="psql" backend_type="client backend">
          <error_severity>AUDIT</error_severity>
          <message>statement: INSERT INTO dept VALUES
                              (10,&apos;ACCOUNTING&apos;,&apos;NEW YORK&apos;
                              );
          </message>
</event>
<event user="enterprisedb" database="edb" process_id="5941" remote_host=
"[local]"
       session_id="5ec7ac4d.1735" session_line_num="5" process_status="idle"
       session_start_time="2020-05-22 16:11:17 IST" log_time="2020-05-22
       16:12:21.764 IST"
       virtual_transaction_id="4/25" type="update" command_tag="UPDATE" audit_
       tag="edbaudit" application_name="psql" backend_type="client backend">
          <error_severity>AUDIT</error_severity>
          <message>statement: UPDATE department SET loc = &apos;BOSTON&apos;
                              WHERE deptno = 10;
          </message>
</event>
<event user="enterprisedb" database="edb" process_id="5941" remote_host=
"[local]"
       session_id="5ec7ac4d.1735" session_line_num="6" process_status="UPDATE"
       session_start_time="2020-05-22 16:11:17 IST" log_time="2020-05-22
       16:12:21.765 IST"
       virtual_transaction_id="4/25" type="error" sql_state_code="42P01"
       command_tag="UPDATE" audit_tag="edbaudit" application_name="psql"
       backend_type="client backend">
          <error_severity>ERROR</error_severity>
          <message>relation &quot;department&quot; does not exist</message>
          <query>UPDATE department SET loc = &apos;BOSTON&apos; WHERE deptno =
          10;</query>
          <query_pos>8</query_pos>
</event>
<event user="enterprisedb" database="edb" process_id="5941" remote_host=
"[local]"
       session_id="5ec7ac4d.1735" session_line_num="7" process_status="idle"
       session_start_time="2020-05-22 16:11:17 IST" log_time="2020-05-22
       16:12:34.878 IST"
       virtual_transaction_id="4/26" type="update" command_tag="UPDATE" audit_
       tag="edbaudit" application_name="psql" backend_type="client backend">
          <error_severity>AUDIT</error_severity>
          <message>statement: UPDATE dept SET loc = &apos;BOSTON&apos; WHERE
                              deptno = 10;
          </message>
</event>
<event user="enterprisedb" database="edb" process_id="5941" remote_host=
"[local]"
       session_id="5ec7ac4d.1735" session_line_num="8" process_status="idle"
       session_start_time="2020-05-22 16:11:17 IST" log_time="2020-05-22
       16:12:45.471 IST"
       virtual_transaction_id="4/27" type="select" command_tag="SELECT" audit_
       tag="edbaudit" application_name="psql" backend_type="client backend">
          <error_severity>AUDIT</error_severity>
          <message>statement: SELECT * FROM dept;</message>
</event>
<event user="enterprisedb" database="edb" process_id="5941" remote_host=
"[local]"
       session_id="5ec7ac4d.1735" session_line_num="9" process_status="idle"
       session_start_time="2020-05-22 16:11:17 IST" log_time="2020-05-22
       16:12:53.048 IST"
       type="disconnect" audit_tag="edbaudit" application_name="psql" backend_
       type="client backend">
          <error_severity>AUDIT</error_severity>
          <message>disconnection: session time: 0:01:35.243 user=enterprisedb
          database=edb host=[local]</message>
</event>

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