When used in the context of databases, memory refers to RAM directly addressable by the CPU as opposed to going through the I/O subsystem.

learn more… | top users | synonyms

0
votes
0answers
9 views

Get memory in Oracle R Enterprise

How can I increase memory for ORE? My server have 10G free memory, but I can't use all of them for ORE. These commands have error: begin sys.rqscriptDrop('clustering_test'); ...
0
votes
2answers
78 views

SQL Server 2012 Very Slow to Consume Memory

I have a bit of a conundrum. I recently upgraded a ~20gb database from Window Server 2008 R2 || SQL Server 2008 R2 to Window Server 2012 || SQL Server 2012. The previous server had 32gb of memory, ...
0
votes
1answer
261 views

Does MySQL load the entire row into memory, or just the columns used in WHERE, ORDER BY and GROUP BY?

I have a table that isn't very large row wise (in the 100ks range), but that contains a lot of raw data that is very large in size. Despite having a relatively little number of rows, it's around ...
0
votes
1answer
27 views

Lowering MySQL Memory Usage without Restart

We are using Percona Server 5.5.35-rel33.0-611.precise with InnoDB in our production server. Recently Mysql memory went high and it did't drop from there. We are afraid whether it would result in OOM ...
2
votes
0answers
70 views

Find out why SQL Server released memory

I have a SQL Server 2008 R2 used for sharepoint and ssrs. The SQL Server hosts two instances. For a few minutes both instances were timing out, not responding. CPU slowly rose to 100%, 30% from ...
0
votes
0answers
30 views

mysql memory usage increasing

We have recently been facing consistent issues with mysql memory on almost all of our machines. Through the course of the week, we see the memory rise gradually until the machine starts swapping and ...
1
vote
2answers
1k views

Why would increase in innodb_buffer_pool_size slow down MySQL?

5.1.68-cll - MySQL Community Server on CentOS The system has 32GB of RAM. I increased innodb_buffer_pool_size from 10240M to 15360M (10GB -> 15GB). Time taken for a series of identical operations ...
0
votes
1answer
42 views

MySQL over total memory allocated usage? memory leak?

i'm using 5.6.21-70.0 for performance test. when i run mysqlslap -a --concurrency=40 --number-of-queries 1000 --iterations=500 --engine=innodb --debug-info -utest -p do some performance test ...
0
votes
1answer
86 views

mysql innodb_buffer_pool_size let me understand

I couldn't find answer for my situation. I have a windows server 2008 with 2 cores and 7 GB RAM (Azure D1 VM). I'm running mariadb 10.0.14 on it. I have 2 databases (1.5GB and 9GB in size). ...
1
vote
2answers
43 views

OOM in mysql-percona

Every 4th day I run in to OOM problem. [Sat Dec 27 12:20:21 2014] Out of memory: Kill process 3662 (mysqld) score 990 or sacrifice child [Sat Dec 27 12:20:21 2014] Killed process 3662 (mysqld) ...
1
vote
1answer
28 views

SQL Server 2008 R2 memory on 64 bit OS

My application server is running SQL Server 2008 R2. OS is Windows 2008 R2 with SP1. Total physical memory is 16 GB. When I looked into the Task Manager, the sqlservr.exe was using "6,734,588 K". ...
3
votes
2answers
504 views

MySQL runs out of memory when importing innodb database

I have a small VPS with 512MB RAM and no swap (can't have any). I am importing a 1.5GB innodb database with mysql -u -p < database.sql Before the operation can finish it says : Lost connection ...
2
votes
1answer
100 views

Converting Heap to MyISAM issue

At work we have a problem that has now occurred more then once. Problem is that query is in state of converting HEAP to MyISAM and it paralyzes our server( query in this state is not able to kill ...
0
votes
1answer
84 views

PostgreSQL replication with fsync disabled?

I need to run PostgreSQL in-memory (for performance reasons), so I intend to disable fsync, which means that no writes will be sent to the WAL. However, as part of my scheme to meet another ...
12
votes
2answers
153 views

Excessive sort memory grant

Why is this simple query granted so much memory? -- Demo table CREATE TABLE dbo.Test ( TID integer IDENTITY NOT NULL, FilterMe integer NOT NULL, SortMe integer NOT NULL, Unused ...
4
votes
1answer
352 views

SQL Server 2012 Standard using too much memory

For the past few months I have had a SQL Server 2012 Standard edition installation using up all the RAM in the server, up to 190GB (I'm not kidding). About every 3 to 4 days I end up having to restart ...
-1
votes
1answer
44 views

Statements in State “Copying to tmp table” disrupt performance [closed]

On a MySQL database (version 5.1.73) a Magento-Shop executes a statement (A) that uses distinct, see http://pastebin.com/A2sy45nF and therefore is "Using temporary" according to "explain". ...
3
votes
3answers
154 views

A way to clear/restart virtual memory creep automatically?

I know it's not good practice to do this, but my company cannot afford me trying to find a proper solution to our problem. I've read this and I could do the same with SQL Server 2005, but I was hoping ...
3
votes
2answers
158 views

SQL Server 2012 Standard Edition using more than 64GB of memory, why and how?

I put SQL Server 2012 Standard on a virtual machine (VMWare) which has roughly 98GB of Memory. Now I checked the query below how much memory is taken by SQL Server. Microsoft SQL Server 2012 - ...
2
votes
2answers
97 views

Is it possible for increasing the SQL Server max memory limit to degrade performance?

As far as I can tell, raising the SQL Server max memory limit has no drawbacks, provided that sufficient memory is left for the OS and other applications. Assuming this is the case, can there be any ...
3
votes
1answer
182 views

dbcc memorystatus - buffer pool target on VM higher than max memory

I'm doing some digging into potential memory/configuration problems on a sql server 2012 SP2. I stumbled upon something that seems a bit strange in the performance counters as well as the dbcc ...
0
votes
1answer
68 views

Why do I get ORA-27102 ON WINDOWS 64 BIT if I increase the memory to 2.5GB

BANNER Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production PL/SQL Release 11.2.0.2.0 - Production CORE 11.2.0.2.0 Production TNS for 64-bit Windows: ...
3
votes
4answers
155 views

SQL Server 2008: how much RAM memory should SQL Server use in a 8GB RAM server?

We have SQL Server 2008 and 8GB RAM in a customer, hosted in a Windows 2008 R2 SP1, and consider the following amount of free memory: and consider the following running programs: Scenario: ...
3
votes
1answer
67 views

PostgreSQL CREATE INDEX memory requirement

I've got 6GB of RAM on my laptop and for a test I'm creating a 50mil-rows table in PostgreSQL 9.3. I then want to create an index on the table. The table and the resulting index together (or twice ...
7
votes
4answers
16k views

Why does MySQL say I'm out of memory?

I was trying to execute a fairly large INSERT...SELECT in MySQL with JDBC, and I got the following exception: Exception in thread "main" java.sql.SQLException: Out of memory (Needed 1073741824 bytes) ...
1
vote
1answer
1k views

Understanding pagefile.sys % Usage performance monitor (perfmon) counter correctly

Lately we run into performance inssues and I started tracking some recommended sql, memory, disk and cpu counters. I informed myself about the recommended values and numbers to look at. One of the ...
0
votes
1answer
51 views

Mysql Server 5.6 Mysqld high memory consumption

I have MySQL Server 5.6 installed in a development machine with these specs: RAM: 4 GB Windows 7 Professional 64 bits Intel Pentium CPU G630 @ 2.70 GHZ Since I installed the MySQL Server, the ...
1
vote
2answers
64 views

return my.conf values to sane levels (total memory footprint = 220GB)

I recently took over administration responsibilities for one of our databases. The existing my.cnf has some crazy values. I should mention that one table has 1.8 billion rows of mostly unneeded ...
0
votes
0answers
50 views

table_open_cache

I know table_open_cache, max_connections, and open_files_limit are related. Is there a tried and true way to set table_open_cache correctly? I have raise it three times and still MySQL Enterprise ...
0
votes
0answers
49 views

mysql uses a lot of virtual memory

I've a mysql server with a lot of small size innodb databases (each db also contains a lot of small tables) & 6GB of RAM dedicated to mysql server. Recently I've increased my ...
2
votes
2answers
1k views

Redis takes up all the Memory and Crashes

A redis server v2.8.4 is running on a Ubuntu 14.04 VPS with 8 GB RAM and 16 GB swap space (on SSDs). However htop shows that redis alone is taking up 22.4 G of memory! redis-server eventually crashed ...
1
vote
5answers
14k views

Why is SQL Server consuming more server memory?

Sqlserver is consuming 87.5 % of my server Ram. This recently causes alot of performance bottleneck such as slowness.I Research on this issue. One common solution i could find on the internet is to ...
3
votes
3answers
363 views

Keeping default max memory 2147483647 MB value in SQL Server, a bad practice?

Based on that msdn page : server memory settings it's a good practice to keep the default values for SQL-Servers min and max memory to keep it dynamic... From what I learned through tutorials you ...
2
votes
2answers
133 views

SQL Server 2012 DBCC memorystatus has wrong information. How can I correct it?

I have a Windows 7 64-bit machine with 16GB ram, 24GB pagefile, 500GB HD and SQL Server 2012 Standard Edition 64-bit running on it. With 5 minutes of starting up, it routinely uses all my virtual ...
1
vote
2answers
72 views

Memory usage of PostgreSQL

I'm using postgreSQL 9.3 database and I have increased the shared_buffers and effective_cache_size in the settings. Will postgreSQL always take this amount of memory or only when needed? I'm ...
0
votes
1answer
134 views

MariaDB Galera setup with drastically different amounts of memory used on cluster nodes - why?

We have a 3 node MariaDB Galera cluster. All nodes are identical and the config on each is identical. They have 64GB of RAM each. The output of the following query is 28: SELECT ...
0
votes
2answers
510 views

Is there a way to enable MariaDB MEMORY storage engine for every table?

I am new to MariaDB and interested in using it because I want to use MEMORY storage engine for every table. I read MEMORY storage engine on mariadb.com and it seems like I had to specify storage ...
0
votes
0answers
104 views

MYSQL Out of memory, table crashing

an specific table on my DB keeps crashing. I suspect to be a bad buffer setting on my.conf, it show this error before crashing (most of the time it needs to be repaired): 18:26:59 [ERROR] ...
0
votes
0answers
21 views

MySQL Cluster Disk Data Tables - worth it?

I'm working on improving the performance of our 4-node MySQL cluster for a webapp with lots of DB writes. We've got a Solr index sitting 'on top' of the SQL in order to give us fast querying, and we ...
0
votes
1answer
47 views

Storing not very volatile information in database with cache or mongodb

For a new project I'm working on right now I was doubting on which database/storage system to use for specific information which does not change that often. We have for instance some ...
0
votes
0answers
88 views

MySQL: What should I do if too many tables opened during peak hours?

In Peak hours: When I run below statement, I found around 100 tables out of 250 have opened. show open tables where in_use>0; There are around 10 tables for which in_use value are >50. Storage ...
1
vote
1answer
27 views

Do threads in cache still use memory?

I was studying about how and how much memory allocated to each connection thread and found below MySQL tutorial: http://dev.mysql.com/doc/refman/5.1/en/memory-use.html There is a point mentioned as ...
0
votes
0answers
48 views

innodb fulltext Table handler out of memory

I am running mariadb 10 and have a large innodb table with a fulltext index. When searching I am regularly getting this error ERROR 128 (HY000): Table handler out of memory Is there some way I ...
1
vote
1answer
195 views

PostgreSQL complaining about shared memory, but shared memory seems to be OK

I've been performing kind of intensive schema dropping and creating over a PostgreSQL server, but now complains..: WARNING: out of shared memory ERROR: out of shared memory HINT: You might need to ...
3
votes
1answer
1k views

SSIS Memory allocation

Is SSIS subject to the maximum memory limitations for SQL Server 2012 Standard edition? If I have a server with 128GB RAM and I allocate 64GB of RAM to SQL Server does SSIS utilise this memory or ...
1
vote
1answer
179 views

AWE to allocate memory in SQL Server 2008 Express with Advanced Services

I am running SQL Server Express Edition with Advanced Services on Windows Server 2008 Enterprise 32 bit OS. I have enabled "Use AWE to allocate memory" on the SQL Server, but I am not sure if this ...
0
votes
3answers
153 views

Large RAM use after import database - ubuntu server

My new VPS has 4GB of RAM. Before importing database system use about 1.2 GB of RAM. When I import into the database, using 250 MB SQL file, 25000 tables use of RAM goes to 97%, htop showing 3302 mb ...
0
votes
0answers
39 views

Single query consuming most memory on server intermittently

Periodically, my SQL Server 2008 DB will come to a crawl because most of the connections are in memory wait. When I query the memory_grants DMV I see that three connections have been allocated ~33% of ...
1
vote
1answer
53 views

How Does Max Server Memory Affect PLE on a Host That Is Not Memory Bound?

I came across an unusual scenario on an instance where only half the physical RAM was being utilized but I was observing PLE values between 1-3 seconds constantly. Windows Server 2003, Enterprise ...
0
votes
1answer
42 views

InnoDB compression: memory usage

InnoDB offers table compression for Barracuda-type tables and the recommendation seems to be to "adjust" buffer_pool_size. The documentation is rather vague about the definite impact of compression on ...