drop tablespace

The role of temp tablespace and the role of temp tablespace The role of temp tablespace: Temp tablespace is mainly used for sorting operations [such as creating indexes, order by and group by, distinct, union/intersect/minus/, sort-merge, join, analyze command], index [such as creating indexes, importing data using IMP

Data files and log files are the most important files in the database. They are where the data is stored. Each database has at least one data file associated with it, and usually more than one, there are many. How is the data organized in the data file? To understand this, we first have to understand what table spaces (tablespace), segments (segment), zones (extent), blocks, are the basic units in which the Oracle database organizes data in a data fil

Oracle11gRelease1 (11.1) tablespace mdash; create and expand (permanent) tablespace, MANUAL (MANUAL)-Oracle will use freeli Oracle 11g Release 1 (11.1) tablespace mdash; create and expand (permanent) tablespace, MANUAL (MANUAL)-Oracle will use free li Content Create (permanent) tablespaces View tablespaces Extended

Temporary Tablespace Temporary Tablespace is used to store instantaneous data, which can be viewed only during session connection. Permanentobject cannot be created in temporarytablespace. Space utilization principle: It will not be monitored or recycled by smon. Instead, SEP (Sort Extent Pool) is used to record idle extent. When you create a database in OracleDatabase, the default Temporary

the tablespace SELECT 'alter Index' | OWNER | '.' | INDEX_NAME | 'rebuild tablespace cqrm; COMMIT; 'FROM DBA_INDEXES WHERE TABLE_NAME IN ('') And owner = 'test' SELECT 'alter table' | OWNER | '.' | TABLE_NAME | 'move tablespace test; COMMIT; 'FROM DBA_TABLES WHERE TABLESPACE_NAME = 'test1' and owner = 'test' 2. Change the

----------------------------------------------------------------- 6/u01/app/oracle/oradata/orcl/tbs01.dbf READ WRITE SQL> drop table scott. tb1; SQL> commit; SQL> alter tablespace tbs1 read only; SQL> alter tablespace tbs1 read write; SQL> create table scott. tb2 tablespace tbs1 as select * from scott. emp; SQL>

that this situation is allowed ).Alter system kill session '2017 9' 7. delete a large temporary tablespace. SQL> alter tablespace temp tempfile offline; --> take it offline first Tablespace altered. SQL> drop tablespace temp including contents and datafiles; --> Delete temp

When creating a user, there is a default tablespace parameter. You can view the view database_properties to see the corresponding information. SQL> select a. property_name, A. property_value from database_properties A where a. property_name like '% default % '; Property_name property_value -------------------------------------------------- Default_temp_tablespace temp Default_permanent_tablespace users Default_tbs_type smallfile SQL> alter database de

When creating a user,There is a default tablespace Parameter.You can view the viewDatabase_propertiesYou can see the corresponding information. SQL> select a. property_name, a. property_value from database_properties a where a. property_name like '% DEFAULT % '; PROPERTY_NAMEPROPERTY_VALUE -------------------------------------------------- DEFAULT_TEMP_TABLESPACETEMP DEFAULT_PERMANENT_TABLESPACEUSERS DEFAULT_TBS_TYPESMALLFILE SQL>Alter database defaul

process will release the temporary segment and clean up the temp tablespace. However, in many cases, our database cannot be down, therefore, this method lacks some application opportunities, but it is still very useful.4. Using Event diagnosis is also the most effective method.1. Determine the Ts of the temp tablespace #SQL> select ts #, name from SYS. Ts $;TS # Name----------------------------------------

Table Space: Oracle's UNDOTBS01.DBF file is too big a solution 1. Prohibit undo tablespace automatic growth ALTER DATABASE datafile ' FULL_PATH/UNDOTBS01.DBF ' autoextend off; 2.--Create a new small space for the undo Tablespace Create undo tablespace undotBS2 DataFile ' Full_path/undotbs02. DBF ' size 100m; --Set the new table space for the system Undo_tablespa

on the dictionary SYS. Fet $ and SYS. uet $ are not required; competition for data dictionary is reduced; UNDO records are not generated; and periodic merge operations are no longer required. For example, a local table space is created and the size of the interval is allocated to 64 KB.SQL> Create tablespace demoDatafile '/ora01/OEM/oemdemo01.dbf' size 10 mExtent management local uniform size 64 K; Query the table select * From dba_tablespace; Automa

Check the tables that use the shared tablespace and the shared tablespace.Check tables that use the shared tablespace Recently I took over a new database machine and found that some tables in some databases do not have ibd files but frm files, while ibdata1 files have a total of 20 GB +. It is estimated that the shared tablespace is used. Stored in the ibdata1 F

. SQL> alter tablespace TMP3 tablespace GROUP TMPGRP; Tablespace altered. 5. Check the information about the temporary tablespace group in the system again. SQL> select * from dba_tablespace_groups; GROUP_NAME TABLESPACE_NAME -------------------------- TMPGRP TMP1TMPGRP TMP2TMPGRP TMP3TMPGRP TMP4 6. remove temporary

. net undo tablespace. The VB. net undo tablespace being used by the current routine cannot be deleted. If you are sure to delete the UNDO tablespace being used by the current routine, you should first switch the UNDO tablespace. Then, delete the corresponding UNDO tablespace