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RSS订阅原创 linux-free
Linux free命令用于显示内存状态。free指令会显示内存的使用情况，包括实体内存，虚拟的交换文件内存，共享内存区段，以及系统核心使用的缓冲区等。
2023-10-23 18:30:09
120
原创 linux - restart network
linux操作系统，如何restart network解决：Failed to restart network.service: Unit network.service not found
2023-10-23 13:46:28
366
原创 linux-command-top
Linux是一个在 Linux 和其他类 Unix 系统上常用的实时系统监控工具。它提供了一个动态的、交互式的实时视图，显示系统的整体性能信息以及正在运行的进程的相关信息。
2023-10-23 11:34:06
22
原创 Elasticsearch max virtual memory areas vm.max_map_count is too low
ERROR: bootstrap checks failed. You must address the points described in the following lines before starting Elasticsearch.bootstrap check failure max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
2023-03-24 20:53:37
179
1原创 Apache RocketMQ-DashBoard Automatic Starting
Apache RocketMQ-DashBoard Automatic Starting
2023-03-22 12:03:21
138
原创 Apache RocketMQ Automatic Starting
Apache RocketMQ Automatic Starting（开机自启）。
2023-03-21 16:15:35
51
原创 git extensions 记住用户名和密码
在git extensions的根目录或者项目的根目录，右键打开。然后执行以下命令，重启git extensions后，输入一次用户名和密码后，git extensions将记住，后续不需要再次输入。
2022-08-22 14:54:39
573
原创 Apache RocketMQ
Apache RocketMQ is a cloud native messaging and streaming platform, making it simple to build event-driven applications.
2022-08-15 11:23:14
438
原创 Oracle/PLSQL: Creating Functions
In Oracle, you can create your own functions.
2022-07-08 18:50:50
130
原创 Oracle/PLSQL: SQLERRM Function
The SQLERRM function returns the error message associated with the most recently raised error exception.
2022-07-08 18:49:52
233
原创 Oracle/PLSQL: SQLCODE Function
The SQLCODE function returns the error number associated with the most recently raised error exception.
2022-07-08 18:49:12
185
原创 Oracle/PLSQL: To_Char Function
In Oracle/PLSQL, the to_char function converts a number or date to a string.
2022-07-08 18:48:07
171
原创 Oracle/PLSQL: SysTimestamp function
In Oracle/PLSQL, the systimestamp function returns the current system date and time (including fractional seconds and time zone) on your local database.
2022-07-08 18:47:23
186
原创 Oracle/PLSQL: Tz_Offset Function
In Oracle/PLSQL, the tz_offset function returns the time zone offset of a value.
2022-07-08 18:46:44
184
原创 Oracle/PLSQL: Trunc Function (with dates)
In Oracle/PLSQL, the trunc function returns a date truncated to a specific unit of measure.
2022-07-08 18:46:08
120
原创 Oracle/PLSQL: Sysdate function
In Oracle/PLSQL, the sysdate function returns the current system date and time on your local database.
2022-07-08 18:45:26
162
原创 Oracle/PLSQL: SessionTimeZone Function
In Oracle/PLSQL, the sessiontimezone function returns the current session's time zone as a time zone offset (in the following format: '[+|-]TZH:TZM') or a time zone region name.
2022-07-08 18:44:39
180
原创 Oracle/PLSQL: Round Function (with dates)
In Oracle/PLSQL, the round function returns a date rounded to a specific unit of measure.
2022-07-08 18:43:47
183
原创 Oracle/PLSQL: Next_Day Function
In Oracle/PLSQL, the next_day function returns the first weekday that is greater than a date.
2022-07-07 14:55:15
73
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