Database Administrator

Using Netback to back up Oracle Reports ORA-27206 error handling Today, my colleague encountered a problem with Oracle database backup. The error message is as follows: Channel ch01: starting piece 1 at 2015-01-12: 22: 06: 56RMAN-03009: failure of

Oracle Database Upgrade (10gR2 to 11gR2) I have a general understanding of Oracle Database Upgrade today, but there are still many things worth considering. First, preparations before the upgrade require a lot of work: 1. Testing and preparation,

Oracle login Method 1. There are two ways to manage Oracle login authentication:1. Operating System Authentication2. Password AuthenticationIi. Overview and implementation of operating system authentication1. Warm up a small experimentSQL> -- first,

Oracle 11gR2 Database UNDO tablespace usage remains high The customer's Database is a standalone Database of Oracle Database 11.2.0.3.0 for AIX 6.1 64bit. The customer queries DBA_FREE_SPACE and finds that the UNDO tablespace usage is as high as 98%

Some problems that are worth summarizing during the installation of RH + Oracle, rhoracle Yesterday, when I installed a RH5 + Oracle version in the middle of the night, I encountered several things and stated the following. 1. you need to configure

Find the corresponding SQL statement using the PID in the operating system, and find the SQL statement using the pid.In linux, we generally use the TOP command to view the processes with the largest performance consumption. If oracle is used, we

[Method] outputs the running metrics of workflow to target, and workflowtarget Take the output workflow start time as an example: First, create the workflow-level variable $ test (datetype: date/time) in workflow) Next, double-click the link

Mysql left jion: that is, left outer join (same as right join), jionouter Left Outer Join: A left jion B on A. id = B. id indicates that the data in Table A does not move. After adding the data in Table B to table A corresponding to Table Outer

Detailed description of database view and view Database View Details -Definition: A View is a table exported from one or more tables (or views. The view and Table (sometimes different from the view, also known as the basic Table-Base Table) are

ORA-16032: parameter LOG_ARCHIVE_DEST_3 destination string cannot be translated, logarchivedest1Standby down, so restart error, ORA-16032: parameter LOG_ARCHIVE_DEST_3 destination string cannot be translated:1. Reboot error messageSQL> startupORA-160

Cascade, no action, Restrict, set null, cascaderestrict in MySQL foreign key settingsAttribute meanings in MySQL foreign key settings:Cascade ModeWhen updating/deleting records in the parent table, synchronize update/delete matching records in the

MySQL can change the root password in four ways (for example, windows), mysqlroot Method 1: use the set password commandFirst, log on to MySQL.Format: mysql> set password for username @ localhost = password ('new password ');Example: mysql> set

Comparison of Not In non-equal signs. It is better to use exits instead of in. Not in will be converted into a series of and during parsing <> Case 1 SELECT @results = count(filterCriterion_sv) FROM tbl_IN_VS_AND WHERE filterCriterion_sv NOT IN (214,

Warning: mysql_connect (): Access denied for user 'root' @ 'localhost' (using password: YES ), Http://www.androidren.com/index.php? Qa = 211 & qa_1 = warning-mysql_connect-access-denied-root % 40-localhost-password The code may be written as

MongoDB Index Command Summary1. Create an index on a key of the document in the collection: 1. We know that if the index is used properly, the query speed will be greatly improved. If the index is used improperly, the performance of the entire

Install mysql and yummysql in yum 1. First, go to the mysql official website; Web: http://dev.mysql.com/downloads/ Yum mysql repot options found: 2. Find the mysql yum repo address on the URL above: Http://dev.mysql.com/downloads/repo/yum/ 3.

SQL transactions (stored procedures and transactions) and SQL transaction stored procedures C # two more methods for executing SQL transactions (summarized by myself)1. stored procedures. Now we will demonstrate how to execute SQL transactions

Deploy the MysqlCluster cluster in Ubuntu and use tumysqlcluster.Deployment environment:System: ubuntu-12.04.4-serverMysql-cluster-gpl-7.3.7-linux-glibc2.5-x86_64.tar.gz Note:1. Do not install Mysql before deployment. Some people use apt-get for

How to configure the STATSPACK performance report of ORACLE 11g adg, adgstatspack Create a normal STATSPACK report user on the master database Sqlplus/as sysdbaSQL> @? /Rdbms/admin/spcreate. SQL SQL> -- cancel some settings of $

How Does oracle ASM Add a new disk to a disk? oracleasm Applicable platform: AIX hp linux win Solaris Applicable versions: all databases 10.1.0.2 to12.1.0.1 Applicable to rac and standalone   Take the RAC environment as an example: Assume that