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  • PostgreSQL的日志文件介绍

    PostgreSQL的日志文件

    pg_log:数据库活动日志(也就是数据库的操作日志);

    pg_xlog:事务日志;

    pg_clog:事务状态日志(pg_clog是pg_xlog的辅助日志)。

    现在主要介绍pg_log

    pg_log的文件内容是可以自定义的,可以通过命令来定义也可以通过修改配置文件postgresql.conf来定义.

    主要需要修改的参数如下,参数修改完毕后重启服务,重新连接数据库,对其操作即可查看日志变化情况。

    # - When to Log -

    client_min_messages = info

    #client_min_messages = notice             # values in order of decreasing detail:

                                                #   debug5

                                                #   debug4

                                                #   debug3

                                                #   debug2

                                                #   debug1

                                                #   log

                                                #   notice

                                                #   warning

                                                #   error

    log_min_messages = info

    #log_min_messages = warning               # values in order of decreasing detail:

                                                #   debug5

                                                #   debug4

                                                #   debug3

                                                #   debug2

                                                #   debug1

                                                #   info

                                                #   notice

                                                #   warning

                                                #   error

                                                #   log

                                                #   fatal

                                                #   panic

    log_min_error_statement = info

    #log_min_error_statement = error       # values in order of decreasing detail:

                                               #   debug5

                                                #   debug4

                                                #   debug3

                                                #   debug2

                                                #   debug1

                                               #   info

                                                #   notice

                                                #   warning

                                                #   error

                                                #   log

                                                #   fatal

                                                #   panic (effectively off)

    #log_min_duration_statement = -1       # -1 is disabled, 0 logs all statements

                                                # and their durations, > 0 logs only

                                                # statements running at least this number

                                                # of milliseconds

    # - What to Log -

    #debug_print_parse = off

    #debug_print_rewritten = off

    #debug_print_plan = off

    #debug_pretty_print = on

    #log_checkpoints = off

    log_connections = on

    log_disconnections = on

    #log_duration = off

    log_error_verbosity = verbose               # terse, default, or verbose messages

    #log_hostname = off

    log_line_prefix = '%a %u %d %h %t %i %e '                    # special values:

                                                #   %a = application name

                                                #   %u = user name

                                                #   %d = database name

                                                #   %r = remote host and port(this is a os port)

                                                #   %h = remote host

                                                #   %p = process ID

                                                #   %t = timestamp without milliseconds

                                                #   %m = timestamp with milliseconds

                                                #   %i = command tag

                                                #   %e = SQL state

                                                #   %c = session ID

                                                #   %l = session line number

                                                #   %s = session start timestamp

                                                #   %v = virtual transaction ID

                                                #   %x = transaction ID (0 if none)

                                                #   %q = stop here in non-session

                                                #        processes

                                                #   %% = '%'

                                                # e.g. '<%u%%%d> '

    #log_lock_waits = off                      # log lock waits >= deadlock_timeout

    log_statement = 'all'                        # none, ddl, mod, all

    #log_temp_files = -1                        # log temporary files equal or larger

                                                # than the specified size in kilobytes;

                                                # -1 disables, 0 logs all temp files

    log_timezone = 'Asia/Hong_Kong'

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  • 原文地址:https://www.cnblogs.com/liuyuanyuanGOGO/p/pg_log.html
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