oracle dba tables

Label:1. If you have permission to delete a user, you can:Drop user user_name cascade;Add the cascade can delete the user data.Delete and then create the user.--Create an administrator userCreate user username identified by password default tablespace space_data (tablespace name) temporary tablespace space_temp (temporal tablespace name);--AuthorizationGrant CONNECT,DBA to user name;--Revision limitsALTER user "username" QUOTA UNLIMITED on space_data

1, if there is a Plsql client, you can use the user login, select all the table right-click Drop.2. If you have permission to delete a user, you can:[SQL]View Plaincopy Drop user user_name cascade; Add the cascade can delete the user data.Delete and then create the user.[SQL]View Plaincopy --Create User Create user username profile default identified by password default Tablespace tablespace name temporary tablespace TEMP account unlock; [SQL]View Plainco

1. If you have permission to delete a user, you can:Drop user user_name cascade;Add the cascade can delete the user data.Delete and then create the user. --Create Admin user user name identified by password default tablespace space_data (tablespace name) temporary tablespace space_temp (temporary tablespace name); --authorizing grant CONNECT,DBA to username; --Modify the quota alter user "username" QUOTA UNLIMITED on Space_data (tablespace name);--Vie

1, the concept of temporary table Temporary table (Global temporary table): Online shopping for e-commerce Temporary tables are used to store private data for a session or transaction. Once a temporary table is established, its structure persists, but its data is valid only within the current transaction or within the current session. 2, the basic knowledge of the temporary table Temporary tables are on

To view a table in the Recycle BinSelect Object_name,original_name,partition_name,type,ts_name,createtime,droptime from RecycleBin;Recovery tableSql>flashback table Test_drop to before drop;Sql>flashback table "Bin$b+xkko1rs5k10uko9bfmua==$0" to before drop;Note: must be supported by version 9i or 10g, flashback cannot restore full-text indexThe following is a referenceEasily recover accidentally deleted tables using the Flash-back table feature in

We have recently taken into account the fact that our database-side write stored procedures are used in temporary tables, as we are not yet clear on what the database end is dealing with? Is the same way as SQL Server, there are some problems, and so on, in order to avoid unnecessary trouble in the future I did in-depth research and review some authoritative information. Oracle Temp table is to note: The

V $ Database: database information, such as the database name and creation time. V $ instance information, such as Instance name and start time. V $ parameter information, select * from V $ parameter where name like '% name' ----> show parameter name (executed in sqlplus) V $ process: Information about processes running, such as PID, spid, and process name, such as SMON and pmon. in windows, a process similar to Oracle is displayed. the name of a thre

' / COMMENT on COLUMN gprs_celltopvol_wk. Cell_en_nam is ' Community English name ' / COMMENT on COLUMN gprs_celltopvol_wk. Cell_cn_nam is ' Community Chinese name ' / COMMENT on COLUMN gprs_celltopvol_wk. Cell_vol is ' Community traffic ' / COMMENT on COLUMN gprs_celltopvol_wk. cell_vol_pct is ' Community traffic ratio ' / COMMENT on COLUMN gprs_celltopvol_wk. Avg_rat is ' average rate ' / CREATE TABLE TEST ( ID Number (10), NAME VARCHAR2 (20), SEX VARCHAR2 (2) ) Tablespace S

Take a closer look at other functions of the Oracle nested table and make a simple arrangement. Oracle provides two methods to use nested tables:1. PL/SQL code is used as the extended PL/SQL language. (This section describes the oracle memory table as part of the oracle nest

The Application of Oracle temporary tables in actual development is what we will introduce in this article. We know that I have always been amazed by SQL Server when writing a query-type stored procedure. Create procedure ps_procedure_name as select * from table; the Select query statement can be used as part of the SQL Server Stored procedure and directly return the result set. However, implementing this t

the data in the table is physically stored in multiple table spaces (physical files) so that when querying the data, it does not scan the entire table every time. Some of the following table partitions are available in Oracle: Range Partitioning: This type of partition uses a set of values for a column, usually the column as a partitioning key. Example 1: Suppose you have a customer table with data 200000 rows, we partition the table through customer

, the interface shows the table space name, table space type, district management type, to "trillion" as the unit of the size of the table space, the size of the table space used and table space utilization. Fig. 1 Table space size and utilization rate 2, view the Oracle database table Space Information command method: By querying the data dictionary table in the database system (dictionary tables) to get

　Oracle DatabaseIt is a relational database management system supported by many people. It can process large volumes of data and has many applications in the network.Oracle DataThe most basic objects are tables and views. A table consists of records (row) and fields (column). It is the structure of data stored in the database. To store and manage data, you must first create a table in the database, that is,

oracle| temporary table We have recently taken into account the fact that our database-side write stored procedures are used in temporary tables because we It is not clear how the database end is handled, and how SQL Server is handled The same, whether there will be hidden dangers and so on some issues, in order to avoid future unnecessary trouble I did a deep Into the research and view some author

the data for the Index organization table is followed by the index, and the execution plan is automatically queried based on the index. 3. Index Clustered tableA cluster (cluster) that stores data from multiple tables on the same block. Similar to data sharing. 1) Create a cluster Create cluster Emp_dep_cluster (depno number (2)) size 2048; The size option tells Oracle to associate approximately 2048 b

Tags: row cat invalid ble reserve OBA does not produce permanentThe introduction of Oracle temporary tables is a good strategy for multi-table cascading queries or complex transactions with large data volumes. As a result, you often encounter situations where you need to work with stored procedures and temporary tables when you are addressing actual requirements.

Oracle With the flash-back table feature in Oracle Database 10g, you can easily recover a table that was accidentally deleted Here's what happens when it doesn't happen: the user deletes a very important table--of course accidentally--and needs to be recovered as quickly as possible. (At some point, this unfortunate user may be dba!.) ） Oracle9i database introd

If you want to reprint Oracle, please specify the source! As anyone who has ever used Oracle knows, to change the column names and order of tables in Oracle is a trivial matter, here's a simple way to do it. Sql> Select object_id from all_objects where owner= ' SCOTT ' and object_name= ' T1 '; object_id ---------- 60

Oracle Data Tables with Chinese characters can be migrated to tables in mysqloracle to mysql. You can use the convertomysql tool online, but it cannot solve the migration problem of data tables with Chinese characters, I had to use plsql to manually export the table with Chinese data in excel format, pay attention to u

1. Introduction to External TablesThe external table is used after oracle9i. An external table is a table in which the definition of a type of table exists in the database and the data does not exist in the database.External tables can be select,join,sort during a database operation or you can create views and synonyms on external tables. However, you cannot perform DML operations on external