How do I resize a tablespace?
and we said…
- alter tablespace table_space_name add datafile ‘/path/to/some/file. dbf’ size Xm; that will add a new file to the existing tablespace.
- alter database datafile ‘/path/to/some/existing/file. dbf’ resize Xm;
- alter database datafile ‘/path/to/some/existing/file. dbf’ autoextend on next Xm maxsize Ym;
How do you resize a data file?
Answer: With a few exceptions, you need to use an ALTER DATABASE RESIZE DATAFILE command to resize a datafile. One exception is the bigfile tablespace. Oracle will allows you to use the ALTER TABLESPACE XXX RESIZE DATAFILE syntax. This is because you are not allowed to add a datafile to a bigfile tablespace.
How do you increase the size of a datafile in Oracle?
You can also use auto extend feature of datafile. In this, Oracle will automatically increase the size of a datafile whenever space is required. You can specify by how much size the file should increase and Maximum size to which it should extend. SQL> alter database datafile ‘/u01/oracle/ica/icatbs01.
How do I increase the size of my Bigfile tablespace?
You can increase the size of a tablespace by either increasing the size of a datafile in the tablespace or adding one. See “Creating Datafiles and Adding Datafiles to a Tablespace” for more information. Additionally, you can enable automatic file extension ( AUTOEXTEND ) to datafiles and bigfile tablespaces.
How do I resize a datafile in ASM?
The following example shows how to extend a datafile to the APP_DATA tablespace in the +DATA ASM group. 1. Identify the datafiles for the tablespace you want to increase. SQL> alter database datafile ‘+DATA/SID/datafile/app_data.
How do I shrink datafile?
To shrink a data or log file
- In Object Explorer, connect to an instance of the SQL Server Database Engine and then expand that instance.
- Expand Databases and then right-click the database that you want to shrink.
- Point to Tasks, point to Shrink, and then click Files.
- Select the file type and file name.
How do I reduce the size of my Sysaux tablespace?
SYSAUX Tablespace
- Online shrink of objects towards the end of the datafile may allow you to reduce the datafile size.
- Move the SYSAUX objects with extents towards the end of the datafile to a temporary tablespace, reduce the datafile size and move them back.
Can we reduce the size of datafile in Oracle?
We need to reduce Disk usage at OS level . The first step for that will be to identify the HWM of datafile . The HWM specifies the limit to which you can resize a datafile.
How do I resize Tempfile in ASM?
alter database tempfile ‘/u01/oradata/TESTDB/temp01. dbf’ resize 250M alter database tempfile ‘/SID/oradata/data02/temp12. dbf’ autoextend on maxsize 1800M; alter tablespace TEMP add tempfile ‘/SID/oradata/data02/temp05.
How do I determine the size of a tablespace?
This query will show you what’s there and how much space are free to use.
- SELECT df. tablespace_name “Tablespace”,
- totalusedspace “Used MB”,
- (df. totalspace – tu. totalusedspace) “Free MB”,
- df. totalspace “Total MB”,
- ROUND(100 * ( (df. totalspace – tu.
- FROM.
- (SELECT tablespace_name,
- ROUND(SUM(bytes) / 1048576) TotalSpace.
How do I add datafile to RAC ASM?
Tutorial IT Point
- 1) Check Free Space in the diskgroup . SQL> SELECT name, free_mb, total_mb, free_mb/total_mb*100 as percentage FROM v$asm_diskgroup;
- 2) Check the diskgroup name which is mapped to SYSAUX tablesapce .
- 3) Add the datafile to tablespace in diskgroup.
- 4) Verify the same.
How do I edit a datafile Autoextend?
Setting a file in a tablespace to autoextend is a fairly easy task as long as the user performing the actions has DBA or SYSDBA privileges: SQL> alter database datafile ‘/whackenhut/smackdoodle/endoplasm/flurst01. dbf’ autoextend on maxsize 2000M; Database altered.
How to resize a database in alter tablespace?
Another exception is that you can use the ALTER TABLESPACE ADD DATAFILE AUTOEXTEND ON syntax to allow a database to resize itself, by growing larger as needed, with this syntax: However to resize a datafile directly, we must use the ALTER DATABASE DATAFILE RESIZE command once again, as seen in this example:
Do you need to use alter to resize a datafile?
Answer: With a few exceptions, you need to use an ALTER DATABASE RESIZE DATAFILE command to resize a datafile. One exception is the bigfile tablespace. Oracle will allows you to use the ALTER TABLESPACE XXX RESIZE DATAFILE syntax. This is because you are not allowed to add a datafile to a bigfile tablespace.
How to change the size of a table in alter?
To change the size of a newly added data file or temp file in smallfile tablespaces, use the ALTER DATABASE autoextend_clause (see database_file_clauses ). BIGFILE | SMALLFILE for information on bigfile tablespaces For each data file in the tablespace, this clause combines all contiguous free extents into larger contiguous extents.
Are there any restrictions on altering a tablespace?
Restrictions on Altering Tablespaces Altering tablespaces is subject to the following restrictions: If tablespace is an undo tablespace, then the only other clauses you can specify in this statement are ADD DATAFILE, RENAME DATAFILE, RENAME TO (renaming the tablespace), DATAFILE ONLINE, DATAFILE OFFLINE, BEGIN BACKUP, and END BACKUP.