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Oracle 11.2.0.4 RAC FOR redhat 6.4 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...ost6.localdomain6
172.16.110.100 dmjyrac1
172.16.110.101 dmjyrac1-vip
172.16.110.110 dmjyrac2
172.16.110.111 dmjyrac2-vip
172.16.110.102 dmjyrac-cluster dmjyrac-cluster-scan
10.10.120.100 dmjyrac1-priv
10.10.120.110 dmjyrac2-priv
172.16.110.120 dmjydbbf
...
SQL, Postgres OIDs, What are they and why are they useful?
... run this script, changing YOUR_DATABASE_NAME with you database name:
for tbl in `psql -qAt -c "select schemaname || '.' || tablename from pg_tables WHERE schemaname <> 'pg_catalog' AND schemaname <> 'information_schema';" YOUR_DATABASE_NAME` ; do psql -c "alter table $tbl SET WITHOUT ...
Correct format specifier for double in printf
... edition, ISO/IEC 9899:1990, as amended and corrected by ISO/IEC 9899/COR1:1994, ISO/IEC 9899/AMD1:1995, and ISO/IEC 9899/COR2:1996.
Major changes from the previous edition include:
%lf conversion specifier allowed in printf
7.19.6.1 The fprintf function
7 The length modifiers...
COUNT(*) vs. COUNT(1) vs. COUNT(pk): which is better? [duplicate]
...e-trick pony, it works well only on one table query:
SELECT COUNT(1) FROM tbl
But when you use joins, that trick won't work on multi-table queries without its semantics being confused, and in particular you cannot write:
-- count the subordinates that belongs to boss
SELECT boss.boss_id, COUNT(s...
Rename MySQL database [duplicate]
...urrent_db" after create the new schema "other_db"
RENAME TABLE current_db.tbl_name TO other_db.tbl_name
Source Rename Table Syntax
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How to send a simple string between two programs using pipes?
...********
Excerpt from "Linux Programmer's Guide - Chapter 6"
(C)opyright 1994-1995, Scott Burkett
*****************************************************************************
MODULE: pipe.c
*****************************************************************************/
#include <stdio.h>...
App Inventor 2 DynamicComponents 拓展：动态创建AI2组件对象 · App Inventor 2 中文网
...程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP 搜索 App Inventor 2 DynamicComponents 拓展：动态创建AI2组件对象 ...
企业级负载平衡简介 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...常不同。用户所连接的目标地址实际上是一个虚拟地址（VIP，Virtual IP）。而负载平衡服务器在接到该请求的时候将会将其目标地址转化为服务实例所在的实际地址（RIP，Real IP），并将源地址更改为Load Balancer所在的地址。这样在...
Restart/undo conflict resolution in a single file
...ISION}, they're now called "ours" and "theirs".
– TGP1994
Jun 13 '16 at 20:26
29
"file is still m...
URL matrix parameters vs. query parameters
...the big deal is with matrix URLs. According to the w3c design article that TBL wrote, it was just a design idea and explicitly states that it's not a feature of the web. Things like relative URLs aren't implemented when using it. If you want to use it, that's fine; there's just no standard way to us...