Database Administrator

1,Whole business tablespace loss recovery Note: All the following experiments are based on the full-Database Backup above. 2.1DeleteWwlAll data files in the tablespace [Root @ wwldb ~] # Cd/DBData/WWL/ [Root @ wwldb WWL] # rm-rf wwl * [Root @ wwldb

Cluster Health Monitor (CHM) is a tool provided by Oracle to automatically collect operating system resources (such as CPU, memory, SWAP, process, I/O, and network). CHM collects data once per second.These system resource data is very helpful for

Syntax: TRANSLATE (char, from,) Usage: replace each character in The from statement with the corresponding character in the to statement. If the from statement is longer than the to statement, the strings in the from statement are deleted. One of

First you need to download HBase latest and stable version: http://www.apache.org/dyn/closer.cgi/hadoop/hbase Decompress the package and move the extracted file to a directory such as/home/user/hbase. $ Cd/home/user/hbaseEnter this directory $ Vi

Through the use of HBase APIs, the following example shows common operations on HBase, as shown below: PackageNet. bkjia. www; ImportOrg. apache. Hadoop. conf. Configuration; ImportOrg. apache. hadoop. hbase. HBaseConfiguration;

The server is down, the dpump process is not stopped, and it is in the abend state after startup. Check ggserr. log and report the following error: 11:13:19 ERROR OGG-01031 Oracle GoldenGate Capture for Oracle, dpump. prm: There is a problem in

First of all, Shenma is ACFS. Please refer to the definition officially provided by Oracle:Oracle Automatic Storage Management Cluster File System (Oracle ACFS) is a multi-platform, scalable file system, and storage management technology that

Due to the installation problem of the AIX operating system, the default time zone is the end of the DCT, and the time zone ending with the DCT is the summer time system. At on January 1, March 11, the system will automatically move forward for one

The Oracle database uses the SNP process to manage and run jobs. The biggest difference between the SNP process and other processes in the instance is that after the process is killed, the system automatically restarts a SNP, therefore, the running

A set of Oracle RAC 10 Gb database, check that the undotbs tablespace is in the recover status, the remote processing process is as follows: 1. Check the database status: Select file #, status from v $ datafile where status = 'recover '; FILE #

PhpMyAdmin is a set of PHP programs that can be used to manage Mysql-server and a single database. It is a convenient management tool for those who are not familiar with Mysql. The phpmyadmin-3.4.3.2-all-languages.tar.bz2 source package is used

I checked the Android source code in Ubuntu Linux today. There is not much space in the root directory. So I want to unload MySQL and install it where I want to install it, so I started to get MySQL again (it seems that it violates my original

The following code uses a PowerShell script to encrypt all stored procedures in SQL Server. For security reasons, we use with encryption to encrypt the stored procedure. But what should we do if we want to update the encrypted stored procedure? I

Master server: 172.16.15.20Slave server: 172.16.15.30 1. Install mysql # pvcreate /dev/sda5    # vgcreate myvg /dev/sda5   # lvcreate -L 10G -n mydata myvg   # mkdir -p /data/mydata   # mke2fs -j /dev/myvg/mydata   

Log on to PL as SYSDBA; 2. Right-click "User"-> "New" to create a User; 3. The new user window is displayed. On the general tab, enter: Name: user name; Password: password; 4. Switch to the "Role Privileges" tab: Select connect for Role and

Oracle spatial data SQL query related instances -- Select dlbm, dlmc, trim (zldwdm) as zldwdm_1 from gzdt where nvl (zldwdm, 'T') = 'T' or zldwdm = '';Update gzdt set ZLDWDM = '000000' where nvl (zldwdm, 'T') = 'T' or zldwdm = '';Commit;Delete from

Content For Oracle Text, you can useCREATE INDEXCreates many types of indexes. The following describes each index type and their purpose and supported features. CONTEXT Index CTXCAT Index CTXRULE index CTXXPATH Index  CONTEXT description When

A. To generate a debug file from the Shipping Transaction or Quick Ship forms Set the following profile options:OM: Debug Level-set5WSH: Debug Enabled-setYesWSH: Debug Level-setStatementWSH: Debug Log Directory-any directory that can be written to

Oracle users only have permission to access other user views: -- Create a userCreate user lf identified by lfPROFILE DEFAULTDefault tablespace userTemporary tablespace tempAccount unlock; -- Grant PermissionsGrant create session to query_dqb;Grant

In the CBO era, the execution plan of SQL statements relies entirely on the statistical information stored in the data dictionary and the computing formula parameters of Optimizer. From 9i to 11gR2, we say that the CBO optimizer has been mature and