Oracle

Oracle's Own backups Until now, many developers have recognized the potential of RMAN and its usefulness as a database backup tool. You may recall that RMAN can back up data directly to disk and tape. When a tape solution is involved, RMAN

The advantages and disadvantages of a large community, more than one m area meaningful? Table Space management technology Management is the district, the Local management table space LMT in each data file header added bitmap area management is

1. Table structure Sql> desc v$sort_usage is the name empty? Type ----------------------------------------- -------- ---------------------------- USERNAME VARCHAR2 (30) USER VARCHAR2 (30) Session_addr RAW (8) Session_num number Sqladdr RAW (8

1. Keep for seven days This is the only way to keep backups for seven days Rman> Connect target/ Connected to target Database:dbsid (dbid=3100778490) Rman> Configure retention Policy to recovery windows of 7 days; 2. Backup Scripts

1. Check the status of OLR: [Root@vmrac1 ~]# ocrcheck-local Status of Oracle Local Registry is as follows: Version:3 Total Space (Kbytes): 262120 Used Space (Kbytes): 2748 Available Space (Kbytes): 259372 id:935756415 Device/file

The Oracle 10g clusterware processes on unix-based systems are: Oracle Clusterware Oracle-provided Clusterware that manages clusterdatabase processing including node membership, group services, global Reso Urcemanagement, and high availability

First, recover via file descriptor (descriptor) (RM delete data file not backed up) Scene: misoperation Delete data file tp10.dbf Rm-rf/u01/app/oracle/oradata/bxdb/tp10.dbf Select Ts#,file#,name,bytes,status from V$datafile; Ps-ef |grep dBW

First, DBV description DBV is a commonly used tool, Oraclemos has an article on Dbv:[id 35512.1]. The main purpose of the Dbverify tool is to check the physical structure of the data file, including whether the data file is corrupted, whether

--Create Pfile file sql> Create pfile = '/tmp/pfile ' from SPFile; File created. Sql> exit Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.3.0-production With the partitioning, OLAP and Data Mining options --Modify the

In 10g, the Rman backup is optimized to no longer back up the data blocks in which the table frees space. The backed up document is 9i, so it has always been considered that the Rman backup only backs up the blocks where the data was written, and

Backup-related dynamic performance view and monitoring 1. Related view V$backup_files V$backup_set V$backup_piece V$backup_redolog V$backup_spfile V$backup_device V$rman_configuration V$archived_log V$backup_corruption V$copy_corruption

The Oracle 11GR2 database has recently been installed on the Red Hat 6.6 virtual machine and is installed with no problem, and the host can access the database on the virtual machine. However, after restarting the virtual machine, the host cannot

1. View the top 10 SQL statements with the most total consumed timeSELECT * FROM (select v.sql_id, V.child_number, V.sql_text, V.elapsed_time, V.cpu_time, V.disk_reads, Rank () Over (o Rder by v.elapsed_time Desc) Elapsed_rank from V$sql v) a where

Some points to note about Oracle compatibility with MySQL: To_char: Convert to String type :to_char (1234.5, ' $9999.9 '), result :$1234.5   To_date: Convert to date type :to_date (' 1980-01-01 ', ' yyyy-mm-dd '), result :01-1 month

Oracle Practice Exercises 1.0February 10, 2017 Friday 9:07:221, list the IT industry database types and user distribution2. List some products commonly used by Oracle Company3. Brief description of Oracle database software, databases, instances, and

In connection with the database, sometimes encountered a "ORA12514: Listener currently does not recognize the service requested by the connection descriptor" error, which is actually the database dynamic registration (about dynamic registration will

--View the use/remaining space of temporary filesSql> select * from V$temp_space_header;--View the temporary tablespace to which the Scott user belongsSql> Select Username, temporary_tablespace from dba_userswhere username= ' SCOTT ';　　--See which

--Restore the entire databaseRun {Shutdown immediate;startup Mount;Restore database;Recover database;ALTER DATABASE open;}--Restore Table space usersRun {SQL ' alter tablespace users offline ';Restore tablespace users;Recover tablespace users;SQL '

Oracle Database automatic Backup implementation effect Export DMP format files using the Oracle EXP command; Automatically compress DMP files using 7z command line to reduce storage space; Use Windows timed tasks to automatically

Directory + 1. Overview of database Security control policies + 2. User Management + 3. Resource Restriction and password management + 4. Rights Management + 5. Role Management + 6. Audit 1. Overview of database Security control policies Security