A database storage unit that groups related logical structures together.

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How do I recover my database after losing a tablespace with indexes?

I'm thinking of moving all the indexes in my PostgreSQL 9.3 database to a tablespace on an SSD for improved performance. This SSD is not in a RAID array and I need to consider a scenario where it ...
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2answers
37 views

Postgres tablespace size is bigger than database size

PostgreSQL tablespace size is bigger than database size. What is the problem about that? SELECT pg_size_pretty(pg_database_size('ibidev')); pg_size_pretty ---------------- 2578 MB (1 row) SELECT ...
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1answer
40 views

USERS Tablespace Best Practices for Application Schema

When creating a user/schema to hold external application data, what are best practices for the tablespaces that the user is defaulted to? Should the user created be defaulted to the USER tablespace ...
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1answer
81 views

Fill Database With Recursive Factorial Function

I want to calculate table's all of the rows's factorials value. And then i want to insert to each row's factorial value in table. so that i create table like as below: TABLE:FACTORIALS ...
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1answer
32 views

Is there a way to specify the initial size of MySQL File-Per-Table Tablespaces?

Preparing for massive data import into a MySQL 5.7 community instance, I'd like to know if there is a way to allocate upfront the total amount of space that will be used by the volume of information? ...
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35 views

What's the difference between betwwen 2 DB and 2 Schema [closed]

My question is : what is the difference between the two next mode in PostgreSQL, for an production application. using two DB in the same SGBD (the same table-space and HDD) Or using two schema in ...
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2answers
218 views

Drop datafile without dropping a tablespace in Oracle 11g

I was trying to take backup of database in Oracle 11g by using RMAN $ rman target / Recovery Manager: Release 11.2.0.1.0 - Production on Fri Sep 11 10:14:37 2015 Copyright (c) 1982, ...
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84 views

Discard tablespace of temporary innodb table in MySQL

I have following problem, i need to discard tablespace of temporary table(file is present, i want to delete this file too) or somehow completely remove this table. This table can't be shown with ...
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295 views

How to copy tablespace from one database to another database in Oracle 11g

How to copy tablespace and datafiles from one database to another database in Oracle 11g in same server ?
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1answer
166 views

Estimating tablespace size

I'm trying to estimate the size of a tablespace using these steps: Space Estimations for Schema Objects and I was little confused about some of the steps. In step 3 for calculating the rowsize I ...
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2answers
315 views

What will happen if I drop SYSAUX tablespace from Oracle 11G

As there are two mandatory tablespaces in Oracle SYSTEM and SYSAUX. They have mention on docs 1 " You cannot drop the SYSTEM tablespace. You can drop the SYSAUX tablespace only if you have the SYSDBA ...
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1answer
1k views

Oracle - ORA-01654: unable to extend index in tablespace

I referred to the below related question, but it was not helpful in my case: ORA-01654: unable to extend index <name of the index> by 128 in tablespace <name of the Index tablespace> I ...
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98 views

Oracle - Using index on unique constraint, what the deal?

Using Druid to generate SQL script for Oracle, I have seen a difference between the version 3.10 and 3.13 and I would like to understand what going on. SQL generated by Druid 3.10 : CREATE TABLE ...
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130 views

SQL Server vs Oracle [closed]

I am transitioning from SQL Server DBA to Oracle DBA. I have minimal experience with Oracle, and I have found that the best way for me to traverse if by correlating terminology and database engine ...
1
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1answer
212 views

Understanding of schema and tablespaces - recommendation for a later seperation [closed]

DLDR: I would like to get a confirmation of my understanding of tablespaces and schemas (see image) a recommendation how to organize schemas and tablespace to make a later separation easy. ...
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1answer
29 views

Instant File Initialisation on Windows Oracle Server

I require to add additional datafiles to a SmallFile tablespace. The process took several minutes on my system for 1 datafile. Is it possible to allow Oracle the same capability as SQL Server using ...
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1answer
53 views

Critical tablespace usage UNDOTBS (96%)

This tablespace is in my case 8GB. I'm on oracle 10g and got critical warning: Tablespace usage critical: UNDOTBS (96%) I also executed this command: select sum (bytes/1048576) MB FROM ...
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52 views

What is the best way to analyze free space in a postgres database and the grow of usage?

In Oracle you can in datadictinary analyze free space by using SQL like: select b.tablespace_name, b.file_id, b.file_name, b.bytes/1024 total_KBytes, sum(a.bytes)/(1024) sum_free_Kbytes, ...
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1answer
424 views

How to split a MySQL table file?

I have a table in a MySQL database for which innodb_file_per_table is enabled. One of my tables is about 20GB and growing. How can I partition the table into separate files? Suppose that I have a ...
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2answers
317 views

Different table size on sp_spaceused and standard report “Disk Usage by Top Tables”

I ran sp_spaceused and Disk Usage by Top Tables standard report for a table. The results for sp_spaceused are: name rows reserved data index_size unused SomeTable <1301755> ...
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15 views

Releasing space after deleting datafiles

I'm deleting old backup tablespaces with option using contents and datafiles in TOAD. Datafiles were deleted, but no space was released: Filesystem GB blocks Free %Used Iused %Iused ...
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1answer
145 views

SQL Server 2012 enlarge database space

I tried to enlarge a database size of database instance on my SQL Server 2012. I manually added a new .MDF file under database instance After restart on shrink database dialog I can see available ...
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1answer
103 views

Postgres tablespace on mounted usb

I've got postgres 9.1 running on raspbian installed with apt-get. I've got NTFS usb HDD mounted in /mnt/usb. What I'd like to achieve is to create a tablespace pointing to /mnt/usb/postgres so I ...
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359 views

How to find out the maximum number of datafiles per tablespace in Oracle?

According to this Oracle document, the maximum number of database files per tablespace is "Operating system dependent; usually 1022". I know there are queries for some of the other limits mentioned ...
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2answers
267 views

MySQL - Changing from system tablespace to file per table

The MySQL database I am working on has the InnoDB tables and indexes stored in the system tablespace which is now > 20Gb. Some years ago I managed a MySQL database that made use of a file per table ...
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481 views

Oracle IMPDP job ORA-30036 unable to extend segment by 8 in undo tablespace 'UNDOTBS1'

I'm using IMPDP with the "network_link" for perform export/import in a single-pass. It runs fine until I get this error. ORA-39171: Job is experiencing a resumable wait. ORA-30036: unable to ...
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154 views

Does changing a Postgresql table's tablespace compact it like “vacuum full” or “cluster”?

I need to reclaim disk space in a table in a Postgresql 9.3.2 database to be used for other tables. The standard suggestions to accomplish this are: "VACUUM FULL" or "CLUSTER" or copy the contents ...
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2answers
443 views

Why doesn't a delete increase unused space in a table?

If I populate the following table: IF OBJECT_ID ('dbo.CleanTableTest', 'U') IS NOT NULL DROP TABLE dbo.CleanTableTest; GO CREATE TABLE dbo.CleanTableTest (FileName nvarchar(4000), ...
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1answer
824 views

How to create a tablespace on Windows 7 for Postgresql 9.2?

I try to run this simple command: CREATE TABLESPACE tb_rec OWNER postgres LOCATION 'd:/tablespaces'; However, the tablespace is not created and I got this message: ERREUR: n'a pas pu ...
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1answer
115 views

Altering multiple tablespaces at once in Oracle

I need help in altering multiple tablespaces at once in Oracle Database 11g. My particular scenario is that this command will be used in a shell script to set all of the tablespaces in read-write mode ...
3
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1answer
180 views

How do databases deal with file system fragmentation?

Especially analytic databases that try to optimize for queries that scan large portions of tables instead of randomly accessing specific rows. For example Redshift has a concept of a sort key that, ...
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2answers
23k views

How can I resolve this ORA-01652 error when I already added a new file to the TEMP tablespace?

I've inherited basic DBA-like responsibilities on an Oracle database and I'm stuck on a ORA-01652 error while trying to run a query that contains lots of joins and grouping. Here's the error I get: ...
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276 views

While altering tablespace shows error tablespace does not exist

SQL> select * from v$tablespace where name = 'EXAMPLE'; TS# NAME INC BIG FLA ENC CON_ID 4 EXAMPLE YES NO YES 3 Above query shows that ...
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1answer
99 views

List all privileges granted on tablespace

Frineds, DB: 11gR2 OS: Unix So I'm moving all objects of a tablespace-A to new tablespace-B. Is there a way to list all privileges/quota granted for tablespace-A? Since tablespace-A can have ...
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1answer
121 views

oracle tablespaces

I export db from user which is related on tablespace USER on local PC and import to user which is related to tablespace DATATAB on server....my question is: will data be stored in DATATAB tablespace ...
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2answers
626 views

Restoring a tablespace to a different database

Any ideas as to how we can re-create a tablespace on a different server? We have a cold backup, so we can copy the datafiles to the target server. Can we just create a new instance on the target ...
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1answer
213 views

How do tablespaces differ in DB2 from databases in MySQL or SQL Server? [closed]

In DB2, it seems there is a strong separation between what a database is and what a tablespace is. Where as in MySQL and MS SQL Server tablespace and database seemed to be used synonymously. What are ...
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146 views

Postgres multidisk master replicating to single disk slave

I have an odd situation. I have a postgreSQL database master with multiple large tablespaces divided across 3 physical disks. I am setting up a slave that will be used to offload long, ...
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1answer
1k views

Oracle Partition Table Space Issue

I have a table with list partitions on it. When i insert data i see that all the partitions have default initial size of 8 MB and I also noticed that when i truncate full table and check size it still ...
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1answer
430 views

Tablespace of an index organized table

I want to find the tablespace of an index organized table with primary key. With dba_segments I can only find the tablespace for the primary key. But how can I find the tablespace for the table?
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2answers
105 views

what is better in terms of allocated space in Oracle Tables: NUMBER or BINARY_FLOAT?

I have a 10 billion records table so I need to improve space allocation. My table has only fields of type floating point (single-precision). What is the best choice, NUMBER or BINARY_FLOAT or ...
3
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1answer
143 views

DB2 9.7, create or replace tablespace possible?

I am creating my tablespaces in the sql scripts that create the database schema. This causes a problem in continuous integration processes, where consecutive execution of the script is not possible ...
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600 views

ORA-01658 on index tablespace when trying to insert into empty table of new database

We are getting ORA-01658 (Error :ORA-01658: unable to create INITIAL extent for segment in tablespace MYDATA_LDATA_INDEX) in our application logs. This happens when application is trying to insert ...
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1answer
944 views

How do I access a old saved tablespace after reinstalling postgres?

So a lot of things might have gone wrong here. I first installed postgres 9.3 on mac 9.1 via homebrew to manage some data. I am using postgres.app. Turns out my harddrive was too small so I decided to ...
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1answer
65 views

Orace tablespace extension operation

Could somebody clarify whether tablespace expansion procedure in Oracle 11g database requires any downtime or could impact availability of the database? My understanding that this can be done "on the ...
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1answer
2k views

Tablespace resize in Oracle 10g

I'm trying to resize a couple of tablespaces but the following query is only valid in Oracle 11g. alter tablespace 2 DATAFILE '/appli2/oracle/xxx/oradata02/xxx_undo_01.dbf' resize 3g; In oracle ...
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1answer
2k views

Undo tablespace full, how to free it

My undo tablespace is full after some modifications. Las column is % of space used. xxx_undo_01.dbf UNDO 2147483648 16777216 2048 2032 16 0,78 99,22 Now i cannot execute any query ...
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2answers
485 views

What are the performance benefits of segregating database objects into different tablespaces?

As the question states, what are the benefits of doing this given the following information/constraints: I will not be using partitioning I will not be placing the tablespaces and its datafiles into ...
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2answers
1k views

MySQL Cluster - Got error 1601 'Out extents, tablespace full' from NDB

I am trying to do some tests on MySQL Cluster. I am creating my database using following commands: CREATE DATABASE test1; use test1; CREATE LOGFILE GROUP lg1 ADD UNDOFILE 'undofile.dat' ENGINE = NDB; ...
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2k views

Is there a way to determine automatic storage table spaces?

First off, we are on both Windows and AIX and are using DB2 ESE 9.7 FP 4. I am trying to determine dynamically whether or not table spaces are set up via automatic storage or not (so we can ...