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  ORACLE exception error handling

  Even the best-written PL/SQL programs encounter errors or unexpected events. A good program should be able to handle all kinds of errors correctly and recover from them as much as possible. Any ORACLE errors (reported as Oracle error numbers in the form of ORA-xxxxx

  2022-06-01 15:25:30 Views: 212
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  Redis cluster refragmentation (add / remove nodes) [theory]

  Redis cluster refragmentation principle: (add or remove nodes) take adding nodes as an example: we only need to reassign the hash slot (hash slot) that has been assigned to the node. Note: when hash slot is reassigned, if there is key-value in the slot

  2022-06-01 15:25:29 Views: 293
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  Redis usage

  The storage form of Redis using Redis is key-values installation of rediswget http://download.redis.io/releases/redis-3.0.7.tar.gztar xzf

  2022-06-01 15:25:28 Views: 274
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  Db.createCollection of mongo ()

  Db.createCollection (, {capped:,-fixed collection, together with size,max, consider whether autoIndexId:,-whether to automatically create an index for the id field size:-by

  2022-06-01 15:25:28 Views: 298
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  Oracle checks the data file for bad blocks

  Check whether there are any bad blocks in the oracle data file through the dbv command, [oracle@jw PROD] $* * dbv file=users01.dbf**DBVERIFY: Release 11.2.0.4.0-Pr

  2022-06-01 15:25:28 Views: 242
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  Basic operation of Oracle-dml,ddl,dcl

  SQL language SQL structure query language structured query language SQL sentence: DDL sentence DML sentence, DCL sentence DDL--data define language-- cre

  2022-06-01 15:25:28 Views: 232
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  Master-Slave Mode of redis Cluster

  This article will explain in detail about the master-slave model of redis cluster. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article. Introduction of redis cluster master-slave mode: in order to ensure the high availability of data, the concept of master-slave is combined.

  2022-06-01 15:25:27 Views: 207
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  Steps for IntelliJ IDEA to connect to MySQL

  This article will explain in detail the steps of connecting IntelliJ IDEA to MySQL for you. The editor thinks it is very practical, so I share it with you for reference. I hope you can get something after reading this article. IntelliJ IDEA connects to MySQL data

  2022-06-01 15:25:17 Views: 213
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  There are several data types in redis

  Today, I would like to talk to you about several data types of redis, which may not be well understood by many people. in order to make you understand better, the editor has summarized the following for you. I hope you can get something according to this article. Redis supports five data types: string (string)

  2022-06-01 15:25:16 Views: 256
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  The method of caching Hot spot data in redis

  This article will explain in detail the methods of caching hot data in redis. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article. For hot data (data that is often queried but not often modified or deleted)

  2022-06-01 15:25:16 Views: 296
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  Fix ora-01190 errors through bbed

  1. BBET library files are not provided by default in the configuration BBETOracle11g. If necessary, you can copy the files in 10g to the corresponding directory in 11g and then install: $ORACLE_HOME/rdbms/lib/ssbbded.o$ORAC

  2022-06-01 15:25:16 Views: 244
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  The method of storing objects in redis

  This article uses easy-to-understand examples to introduce the method of storing objects in redis, the code is very detailed, interested friends can refer to it, I hope it can be helpful to you. Redis has been widely used, but redis itself does not have a method to store objects directly.

  2022-06-01 15:25:16 Views: 210
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  How to add and unlock redis

  This article uses easy-to-understand examples to introduce how to lock and unlock redis. The code is very detailed. Interested friends can use it for reference. I hope it will be helpful to you. Redis does not have a locking mechanism, and there is no competition for multiple user connections. But in

  2022-06-01 15:25:16 Views: 294
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  Sentinel mode and cluster mode in redis

  The editor in this issue will bring you about the sentinel mode and cluster mode in redis, and analyze and describe it from a professional point of view. I hope you can get something after reading this article. Sentinel mode is a highly available solution, and sentinel itself is a stand-alone

  2022-06-01 15:25:15 Views: 206
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  How to delete the expired key in redis

  This article will explain in detail how to delete the expired key in redis. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article. Recently we found an interesting problem in the Redis cluster. Spending a lot of money

  2022-06-01 15:25:15 Views: 276
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  What is the role of Sentinel mode in redis clusters

  The editor in this issue will bring you about the role of the sentinel mode in the redis cluster and analyze and describe it from a professional point of view. I hope you can get something after reading this article. Sentinel mode is a cluster deployment method officially recommended by Redis, which is different from master-slave replication.

  2022-06-01 15:25:12 Views: 218
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  What if the navicat imports the xlsx file when the Times is wrong?

  What should I do if I make an error in importing xlsx files into navicat? In view of this problem, this article gives the corresponding analysis and answers, hoping to help more friends who want to solve this problem to find a more simple and feasible way. The reason for the error of navicat importing xlsx format file is: missing

  2022-06-01 15:25:03 Views: 264
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  Linux7 cannot mount oracleasm module when installing 12c rac

  Problem: rac oracleasm linux 7 # oracleasm configure-iConfiguring the Oracle ASM library driver.This wil

  2022-06-01 15:25:00 Views: 211
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  What's the difference between jedis and redistemplate?

  What's the difference between jedis and redistemplate? This article uses the example code to show, the code is very detailed, interested friends can refer to, hope to be helpful to you. Jedis is the Java-oriented operation Red officially recommended by Redis

  2022-06-01 15:25:00 Views: 274
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  The way of MySQL Management-Notes-the change of MySQL5.7 sql_mode

  MySQL 5.7 sql_mode change 1, the default enables STRICT_TRANS_TABLES strict mode, this mode is strict mode, the data will be strictly checked, error data can not be inserted into the error report, and things are rolled back. 2. MySQL 5.6 default

  2022-06-01 15:24:59 Views: 298