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Oracle is still quite common, So I studied the Oracle UNDO tablespace and shared it with you here. I hope it will be useful to you. 1. In order to open the database, the first thought is to clear bad logs,: SQL>alterdatabaseclearunarchivedlogfilegroup3; SQL>alterdatabaseclearunarchivedlogfilegroup3unrecoverabledatafile; alterdatabaseclearunarchivedlogf
Oracle tablespace, oracle tableCreate a tablespace for dictionary management create tablespace james datafile '/opt/oradata/orcl/james01.dbf' size 50 M, '/opt/oradata/orcl/james02.dbf' size 50 M minimum extent 50k ex
undo tablespace unless you transfer them to another disk to improve performance. 2. The purpose of the tablespace(1) Assigning different table spaces to different users, assigning different table spaces to different schema objects, facilitating the operation of user data and management of schema objects.(2) Different data files can be created on different disks, which facilitates the management of
size]; -- Alter tablespace tablespace shrink space [KEEP size];SQL> alter tablespace temp2 shrink space keep 30G; Tablespace altered. SQL> SELECT file #, name, bytes/1024/1024/1024/as "TEMPFILE (G)" FROM v $ tempfile; FILE # name tempfile (G)-----------------------------------------------------------------------1/orad
name DATAFILE 'data file details' [extent management {LOCAL {AUTOALLOCATE | UNIFORM [size inteter [K | M]}] The keyword extent management local specifies that this is a LOCAL-managed tablespace. For system tablespace, you can only specify extent mangement local when creating a database because it is the first tablespace
1. Create and set tablespaces Create tablespace mydb2Datafile 'd: \ oracle \ product \ 10.2.0 \ oradata \ test \ mydb4.dbf'Size 30 m autoextend on next 10 m maxsize unlimited,'D: \ oracle \ product \ 10.2.0 \ oradata \ test \ mydb5.dbf'Size 20 m autoextend on next 5 maxsize 100 m; Alter database datafile 'd: \
undo mode to manage the LOB mirror space through time.Pctversion and retention cannot be specified at the same time. It is recommended that the database use the retention parameter under automatic undo mode.Freepools integer: Specify the free list to log segment. Integer is the number of instances in the RAC environment. 1 in a single instance environment. Oracle defaults with automatic undo modeFreepools to manage the list of free blocks. Unless we
How to deal with oracle tablespace insufficiency -- 1. view the table's select tablespace_name, table_name from user_talbes where table_name = 'test'; -- 2. Obtain the user's default tablespace select username, DEFAULT_TABLESPACE from dba_users where username = 'mxh'; -- 3. View All tablespace files select * from dba_d
ALTER DATABASE DEFAULT Temporary tablespace "SYSTEM"ALTER DATABASE tempfile ' F:/oracle/product/10.1.0/oradata/orcl/temp01. DBF ' RESIZE 200MALTER DATABASE tempfile ' F:/oracle/product/10.1.0/oradata/orcl/temp01. DBF ' Autoextend off CREATE bigfile tablespace "apptbl" DataFile
been used.4. The default value of undo_retention is 900 seconds.SQL> alter tablespace undonew add datafile 'u01/app/oracle/oradata/ora10g/undonew02.dbf' size 10 M autoextend on; 4. Switch undo_tablespace1. The database can have multiple undo tablespaces, but only one can be used at a time.2. Set the undo_tablespace pa
on to the system? However, there is another problem during login. The solution is to Log On As sysdba.1. Enter sysplus and press Enter. 2. Enter the username system as sysdba and press enter (or sys as sysdba press Enter) 3. Press enter without entering any password. You can log on to the database. Specifically, as sysdba is used to log on to sysdba. There are three logon identities for oracle: Normal identity Sysdba System Administrator identity Sy
T.tablespace_name =d.tablespace_nameOrder BY Tablespace_name,file_name;As you can see from the table above, all of the table spaces have the function of automatically expanding, and the state is available By synthesizing the above results, it can be concluded that the problem encountered is due to the possibility of 1-tablespace deficiency. The solution is to enlarge the table space Four ways to enlarge the table space:1.
We have previously introduced Oracle tablespace recovery. Before recreating an Oracle tablespace, we will first let you know about the user's tablespace errors and then introduce how to recreate an Oracle
Oracle extended tablespace 1. view All table space usage select B. file_id File ID, B. tablespace_name tablespace name, B. bytes/1024/1024 | 'M', (B. bytes-sum (nvl (. bytes, 0)/1024/1024 | 'M' is used, sum (nvl (. bytes, 0)/1024/1024 | 'M' remaining space, 100-sum (nvl (. bytes, 0)/(B. bytes) * 100 percentage occupied from dba_free_space a, dba_data_files B wher
Oracle tablespace deletion Problems and SolutionsProblem 1: An error ORA-29857 was reported during tablespace Deletion Table space deletion statement:DROP TABLESPACE SAC INCLUDING CONTENTS AND DATAFILES;According to the MOS document:How To Resolve ORA-29857 During a Drop Tablespace
Increase the tablespace size: one is to add data files to the tablespace, and the other is to increase the size of the original data file in the tablespace. If you are interested, you may find it helpful. Increase the tablespace size: one is to
Tags: ACL settings file dbid data startup fast database HandIf the system tablespace file is missing, it can be restored if there is a backup condition. The database needs to be set to mount state and then Restore/recover datafileSimulation Experiment:Sql> select name from V $ datafile;NAME-------------------------------------------------------------------- ------------------------------/u01/app/
Oracle uses the backup control file for recovery, and then creates a tablespace for recovery. 1. Create a tablespace after the backup control file, and all the control files are lost. How can I restore the table using the backup control file? The procedure is as follows:1. Back up the database Rman target/catalog RC_ADMIN/RC_ADMIN @ prod3 Backup database plus arc
Tags: datafile limit end SQL Toe sso file creat xtend1. Create a table spaceCreate Tablespace SIRM2DataFile ' D:\oracle\product\10.2.0\oradata\orcl\SIRM2.dbf 'Size 1024M--storage address Initial size 1GAutoextend on next 10M--10M per expansion--maxsize 2024M--MaxSize Unlimited--Unlimited expansionEXTENT MANAGEMENT Local AutoallocateSegment Space management auto;
-- 1. Create tablespace Create tablespace hmlp datafile 'd: \ oracle \ product \ 10.2.0 \ oradata \ orcl \ hmlp. dbf' Size 200 m autoextend on next 10 m maxsize unlimited; Alter database datafile 'd: \ oracle \ product \ 10.2.0 \
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