oracle dba tables

Oracle DBA's Artifact: PRM recovery Tool, which runs from Oracle software and reads data directly from Oracle data filesPRM is all called Parnassusdata Recovery Manager, by the Tan software independent research and development, with independent software copyright. The PRM can be run independently of the Oracle software

The following articles mainly describe the Common commands of Oracle DBA through the code of the actual application. If you are a beginner in Oracle DBA, you can use the following articles to understand the specific operations or related functions. The following is an introduction to the text. Create temporary tablespa

Oracle DBA Study Notes-STARTUP detailed description: Refer to database version: 10.0.2 I. Command Parsing STARTUP options | upgrade_options options is: [FORCE] [RESTRICT] [PFILE = filename] [QUIET] [MOUNT [dbname] | [OPEN [open_options] [dbname] | NOMOUNT], the three stages of NOMOUNT, MOUNT, and OPEN are startup. They cannot exist in the command at the same time. Here, open_options is: READ {ONLY | WRITE [

I used to mix dba and sysdba. Today I am discussing the differences between them in the Forum. The special record is as follows: SYSDBA is not a permission. When a user logs on to the database as SYSDBA, the user will become SYS. You can log on as sysdba to open the database, close the database, create SPFILE, and restore the database, which cannot be implemented by the DBA role; Sysdba is the system p

inconsistent backup data. In Oracle's RMAN tool, you can use online redo logs to solve the inconsistency caused by Backup recovery. 3. Hot Backup FileDatabase FilesLog FilesControl FileParameter filePassword FileNetwork parameter file 4. What is the minimum read/write operation in the database?Oracle block is the smallest unit for read/write operations in Oracle databases. An

ORACLE management-view users with DBA roles 1. view All users: select * from dba_users; select * from all_users; select * from user_users; 2. view system permissions of users or roles (system permissions assigned to users or roles): select * from dba_sys_privs; select * from user_sys_privs; SQL> select * from user_sys_privs; username privilege adm ---------------------------- permission --- zszq unlimited t

backup method and policy? What is the network file configuration? 19. Check the recent alert logs to obtain useful information. 20. run several performance analysis reports to see how the system is running recently. 21. Run an RDA report to collect the complete system status report. Well, with this basic information (incomplete), you have a general understanding of the system you are new to. Next, you can analyze it in depth, then we will formulate a set of O M specifications that meet the act

If you do not know the password for the System,sys user in Oracle, you can retrieve it as follows:First, the database is entered as a regular user:Execute the following command in Sql*plus:Sql>connect/as Sysdba (can also be connected in the following way: Sql>connect internal)Sql>alter user sys identified by SYS; (The password for user sys will change to SYS after carriage return)Similarly, you can change the system passwordSql>alter user system ident

connectionsSql>select Count (*) from v$session where status= ' active ' #查看并发连接数–6. To view the number of connections for a specified programSql>select Count (*) from v$session where program= ' jdbc thin client ' #查看jdbc连接oracle的数目–7. View Database Installation Instance (DBA authority)Sql>select * from V$instance–8. View Run Instance NameSql>show parameter instance_name–9. View database nameSql>show parame

Unix/linux topic: 1. How to view host CPU, memory, IP and disk space? cat /proc/cpuinfocat /proc/meminfoifconfig –afdisk–l2. What are your common process management and host Performance view commands?Ps–efIostat3. Set up DBA and reorganize user Oracle, default shell is bash.4. How to view the user Oracle's login history and command operation history?5, write crontab, let script/opt/test.sh at 8:00 every Su

Oracle Learning (18) [DBA]: Distributed DatabaseWhat is a distributed database? L data is physically stored on multiple nodes of the network, logically being a whole.The independence of distributed databases l the independence of distributed data means that users do not have to worry about how data is divided and stored, but only what data they need.Oracle distributed RDBMS local operations remote operation

password; Create User Username identified by password default tablespace users quota 10 m on users; B. Change the password Alter User Username identified by pass; Change the password from password to pass. You can also change the password after logging in. C. delete a user Drop User Username; Drop User Username cascade; 5. Three standard roles (role): connect, resource, and DBA. I. Connect connection and login Permissions Ii. re

:36:23 AM all 0.00 0.00 0.00 100.0010:36:25 AM all 0.00 0.00 0.00 100.00 % Usr indicates the percentage of CPU resources used by user processes, % sys indicates the percentage of CPU resources used by system resources, and % wio indicates the percentage of CPU resources waiting for IO completion, this is worth noting. % idle is the percentage of idle space. If the value of the wio column is large, for example, more than 35%, it indicates that your system's IO has a bottleneck, and your CP

EXP Export Oracle database table: (as native administrator), refer tohttp://jiqinlin.iteye.com/blog/758469 Export TABLE: Exp username/password @localhost (IP address): Port number/Database instance name file= local address \ Want to generate an indication. DMP owner= (username, Password) eg:exp C # #tjuser/TJUSER@LOCALHOST:1521/ORCL file=c:\adc160624.dmp owner= (C # #tjuser, Tjuser)//tables under the curren

buffer settings, low buffer hit rateThe cache settings of PGA are too small (for Oracle 9i, when the automatic management mode is used, the PGA settings are too small), resulting in a large number of temporary tablespace operationsRedo logs have performance bottlenecksThe redo buffer settings are unreasonable.Hotspot dataSerious tablespace fragmentationUnreasonable storage parameters for tables and Indexes

Temporary tables, external tables, and partition tables in OracleTemporary table In Oracle, a temporary table is "static". It only needs to be created once like a common data table. Its structure is valid from creation to deletion. Compared with other types of tables, a temp

1. What is Oracle R12.2R12.2 DefinitionArchitectureAdvantages of R12.2Limitations of R12.2What the benefit business users would get from R12.2 2. Difference between R12.1 and R12.2 ArchitectureArchitectural difference between R12.1 and R12.2Advantages and disadvantages of R12.1 and R12.23. What's online patchingConcept of Online PatchingADV and disadvantage of Online pathing cycleLimitations of Online Patching4. Installation of R12.2Installation of R1

The solution is as follows: 1-from the command prompt, stop ISQLPLUS: C: \> isqlplusctl stop 2-assuming that you install Oracle under C drive, run the following comands: C: \> set ORACLE_HOME = c: \ oracle \ product \ 10.2.0 \ db_1 C: \> set java_home = % ORACLE_HOME % \ JDK 3-Change directory: Cd % ORACLE_HOME % \ Solaris \ J2EE \ ISQLPLUS \ Application-deployments \ ISQLPLUS 4-Suppose you need

Here's the solution: 1-from the command prompt, stop isqlplus:C:\>isqlplusctl stop 2-assuming that you install Oracle under C Drive, run the following comands: C:\>set oracle_home=c:\oracle\product\10.2.0\db_1 C:\>set JAVA_HOME=%ORACLE_HOME%\JDK 3-change directory to: CD%oracle_home%\oc4j\j2ee\isqlplus\application-deployments\isqlplus 4-suppose You need to create a new user with user name ' Yoyo ' a

Authorization for CONNECT, RESOURCE, and DBA in ORACLE CONNECT, RESOURCE, and DBA are the three built-in roles of the ORACLE system. The role permissions are as follows: CONNECT: users with the Connect permission can only log on to ORACLE, create entities, and create databa