oracle dba tables

If you want to reprint, 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 ---------- 6067 Sql> Select Obj#,col#,name from sys.col$ where obj#

If you want to reprint, 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 ---------- 6067 Sql> Select Obj#,col#,name from sys.col$ where ob

$.flags, 1), 1, 1, 0),NVL (t$.tab#, 0), 0, 0, 0, 0,NVL (T$.degree, 1), NVL (t$.instances, 1),DECODE (Bitand (T$.flags, 8), 8, 1, 0),MOD (TRUNC (O$.FLAGS/2), 2), T$.property,DECODE (T$.flags, Bitand, 1, 0), ts$.dflogging, o$.oid$,T$.spare1, DECODE (Bitand (O$.flags, 16), 16, 1, 0),NVL (t$.rowcnt,-1), NVL (t$.blkcnt,-1), NVL (T$.avgrln,-1),T$.flags, T$.trigflag, O$.status,(SELECT COUNT (*)From sys.opqtype$ opq$WHERE opq$.obj# = o$.obj# andBitand (opq$.flags, 32) = 32)From sys.tab$ t$, sys.obj$ o$,

user authorization to query a single table to test11 usersSelect ' GRANT SELECT on ' | |table_name | |' to test11; ' The results obtained from User_tables are as follows: GRANT SELECT on Webservice_user to Test11grant SELECT on Userless_patient to Test11, and then the results obtained above are executed individually Again: Grant SELECT on Webservice_user to Test11grant SELECT on userless_patient to test11; The newly created table will have to be accessed by UserA to execute the GRANT statement:

. each user has its own permissions and can share data with other users.4. Data TablesIn the warehouse, we may have multiple houses, each with multiple shelves and multiple layers. We store data in databases and ultimately store and manage data tables.5. Data FilesThese concepts are logical, while data files are physical. That is to say, a data file is really "something you can see" and is displayed as a real file on the disk. Ii. Create (* If the

Oracle creates and deletes databases, creates tablespaces, and inserts, deletes, and modifies tables. oracle creates 1. Create and delete Databases Oracle OraDb11g_home-> Configuration and porting tools-> Database configration Assistant->... then you can create or delete a Database. 2. Create a tablespace Create tables

Space occupied by ORACLE computing tables and space occupied by oracle In ORACLE databases, how does one calculate the storage space occupied by a table? You can view the space occupied by a table in the System View DBA_SEGMENTS, USER_SEGMETNS, and DBA_TABLES, as shown below: SELECT SEGMENT_NAME TABLE_NAME ,SUM(

Quick statement sharing for joint modification of multiple tables in oracle, oracle statement Merge into user_member_info USING (select min (UP. created) as cre, min (up. shop_no) as shop_no, up. memberid as memberid From user_platform_relation up, (Select memberid as mid, min (created) as cre From user_platform_relation Group by memberid) um Where up. cr

,Ten);INSERT intoEmpVALUES(7788,'SCOTT','ANALYST',7566, To_date ('19-4-87','dd-mm-yyyy'), the,NULL, -);INSERT intoEmpVALUES(7839,'KING','President',NULL, To_date ('17-11-1981','dd-mm-yyyy'), the,NULL,Ten);INSERT intoEmpVALUES(7844,'TURNER','salesman',7698, To_date ('8-9-1981','dd-mm-yyyy'), the,0, -);INSERT intoEmpVALUES(7876,'ADAMS','Clerk',7788, To_date ('23-5-87','dd-mm-yyyy'),1100,NULL, -);INSERT intoEmpVALUES(7900,'JAMES','Clerk',7698, To_date ('3-12-1981','dd-mm-yyyy'),950,NULL, -);IN

; End loop; CLOSE c_temp; END; Method 2: insert into hr. job_history Copy codeThe Code is as follows:Select * from hr. job_history as of timestamp to_timestamp ('2017-07-23 10:20:00 ', 'yyyy-mm-dd hh24: mi: ss '); This method is simple and easy to grasp. The function is the same as the above time as the time before your misoperation, preferably close to the misoperation, because the time limit for oracle data stored in the rollback persistence segment

If you need to reprint it, please indicate the source!Anyone who has used ORACLE knows that it is very cumbersome to change the column name and sequence of tables in ORACLE. Here is a simple method.SQL> select object_id from all_objects where owner = 'Scott 'and object_name = 't1 ';OBJECT_ID----------6067SQL> select obj #, col #, name from sys. col $ where obj #=

USERSTEMPDIP USERSTEMPSysdg User After the Oracle database is built, to build the table in the database, you must first establish the user for the database and specify the table space for the user. Above we have built the database and table space, next build users: To create a new user: CREATE USER user name by password default tablespace tablespace (defaults to users) Temporary Such as: CREATE USER utest by utestp

Connected to Oracle Database 11g Enterprise Edition Release 11.2.0.1.0Connected as [email protected] as SYSDBASql>Sql>--Create userSql>create user LPA identified by liPeng1;User createdSql>--Grant DBA authority to the userSql>Grant DBA to LPA;Grant succeededSql>--Create use table spaceSql>Create tablespace liPeng112datafile ' E:\oracle11\liPeng1.dbf '3size 1500M4

The Oracle tutorial you are looking at is how to determine duplicate records of Oracle database tables. As an Oracle Database developer or DBA, you often experience the problem of trying to create a unique index on a column or column in a library table, prompting ORA-01452:

In Oracle8i or later versions, you can create the following two types of temporary tables: 1. Session-Specific temporary tables CREATE GLOBAL Temporary On COMMIT PRESERVE ROWS; 2. Transaction-specific temporary tables CREATE GLOBAL Temporary On COMMIT DELETE ROWS;CREATE GLOBAL Temporary TABLE mytemptable Although the temporary table is in existence, but you

The ORACLE tutorial is: how to determine the repeated records of Oracle database tables. As an Oracle database developer or DBA, you will often encounter this problem in practice: when trying to create a unique index for a column or several columns in the database table, the

As mentioned on the phone, OracleThe internal optimizer is based on a series of internalThe algorithm is based on statistical information on the table to generateThe line plan. For a particularly complex SQL languageOracle's optimizer has a chance not toOptimal execution plan (because the machineThe code is actually more rigid, thoughTo the execution plan according to the internal algorithmis relatively fast, but actually this executionThe plan may be slow in actual execution).This is the situat

Although we often use temporary tables in daily database development and maintenance, we may still have a poor understanding of temporary tables. I found a good post on the Internet today to share with you. Source: http://www.matrix.org.cn/thread.shtml? Topicid = 31492 forumid = 36 In Oracle8i or a later version, you can create two types of temporary tables:1.

We all know that temporary Oracle tables can improve the processing performance of Oracle databases. If we do not need to store temporary Oracle tables, they can only be stored in the actual application space of temporary Oracle

In Oracle8i or a later version, you can create two types of temporary tables: 1. Session-specific temporary table Create global temporary On commit preserve rows; 2. Temporary tables specific to transactions Create global temporary On commit delete rows; Create global temporary table MyTempTable Although the created temporary table exists, you can try to insert a record and then mount it to select using ot