Database Administrator

GoldenGate common error analysis 10. OGG-01027 long transaction) Example 25: WARNING OGG-01027 Long Running Transaction: XID 84.242063, Items 0, Extract YX_EXT1, Redo Thread 1, SCN 2372132775890 10219859973074), Redo Seq #5688, Redo RBA

Iii. Network Transmission Encryption GoldenGate is not encrypted by default during data transmission. Data can be encrypted before GoldenGate transfers data over the network. After being transferred to the target end, data can be decrypted before

If the database access volume is large and the pressure on the database is reduced, he will find one database if there is a read operation. If he writes the database, he will go back and find the other two to avoid mutual interference, let's take a

1. date: Query and modify the date and time 1) display the current time and date $ Date Fri Jul 17 14:09:38 CDT 1998 2) set the time and date $ Date 0717142598 Fri Jul 17 14:25:56 CDT 1998 The configurable time range is 1970 ~ 2037 2. cal: Display

-- 1Create table my_test (Id NUMBER (3 ),Name VARCHAR2 (20));Insert into my_test VALUES (1, 'this is line 1 ');Insert into my_test VALUES (1, 'this is line 1 ');Insert into my_test VALUES (1, 'this is line 1 ');Insert into my_test VALUES (1, 'this

Must understand SQL knowledge 1. query Two External table connections There are two tables A and B: mysql> select * from A;+------+------+| id | Col1 |+------+------+| 1 | AA || 2 | BB || 3 | CC |+------+------+3 rows in set (0.00

Precision Marketing, evaluation methods and Parameter Adjustment Author: Hu Xiaoyan, an analyst at mingbo zhichuang (Beijing) Software Technology Company) During this period of work, I had a little understanding of things I didn't know before. It

Oracle error: Record is locked by another user -Bash-3.00 $ sqlplus/nologSQL * Plus: Release 10.2.0.4.0-Production on Wed Sep 18 17:57:49 2013Copyright (c) 1982,200 7, Oracle. All Rights Reserved.SQL> connect/as sysdba;Connected.SQL> select status

Dict is mainly composed of the struct dictht's Ha tables. The reason why dict is defined as an array of 2 (dictht ht [2]) Ha tables is that redis uses progressive rehash, that is, when rehash is required, execute N steps rehash before each operation

Struggling with elementary Web development, both hibernate and basic jdbc involve a coding problem. After all, this set of programming was invented by the foreign bank of lunjia. I had to bow my head in the Greater China Program, few gossip.

/** * Saving and obtaining date data in databases and java programs: * 1. Insert Date data into the database * Eg: insert into student (birthday) values (to_date ('2017-09-19 ', 'yyyy-MM-dd ')); * 2. java programming * The attribute type in the

I. Create a disk group Command: Create diskgroup diskgroup_name redundancy Failgroup failgroup_name disk 'disk _ nmae' name asm_disk_name ... ; Note: Limit on the number of failgroup fault groups: HIGH ---------- failgroup> = 3 NORMAL ----------

Operating system version: Testterm1:/# oslevel-r 5300-00 Disk quota system, which is based on the Berkeley disk quota system, provides an effective way to control the use of disk space. Defines the quota system for individual users or groups and

The user specified as a definer ('linben' @ '%') does not exist Database imported from other places An error is reported when the project is started. Solution: The reason is that there is a UDF in the original database. The created user is the

C: \ Users \ Administrator> emctl status dbconsole Environment variable ORACLE_UNQNAME not defined. Please set ORACLE_UNQNAME to database uniquename. C: \ Users \ Administrator> emctl stop dbconsole Environment variable ORACLE_UNQNAME not defined.

Environment: Sys @ ORCL> select * from v $ version; BANNER ---------------------------------------------------------------- Oracle Database 10g Enterprise Edition Release 10.2.0.1.0-Prod Sys @ ORCL>! Uname Linux (1) modify the Control File

Select and optimize Indexes Understanding B-tree indexes (BANLANCE) 1. Create a table Createtablecust ( Cust_idnumber, Last_namevarchar2 (30 ), First_namevarchar2 (30 )); 2. Determine that multiple SQL queries frequently use the last_name column in

Database recovery planHttp://netkiller.github.io/journal/db.restore.htmlMr. Neo Chen (netkiller), Chen jingfeng (BG7NYT) Xishan Meidi, Minzhi Street, Longhua new district, Shenzhen City, Guangdong Province, China518131+ 86 13113668890+ 86 755 2981208

650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131229/2021045S2-0.gif "alt =" t_0022.gif "/> Interface to forget Interface has been too much, there are more errors! This error often occurs when I run the program. I have been

I. Random query optimization: 4.6G-rw ---- 1 mysql 4.6G Oct 7 task_log.ibdselect SQL _no_cache * from task_log order by rand () limit 1; mysql> explain select SQL _no_cache * from task_log order by rand () limit 1; + ---- + ------------- + ----------