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.

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4answers
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RAM utilization

We are using SQL Server 2014 on Windows server 2008 Web edition (64 bit). Total RAM of OS is 8 GB .When we check high physical memory usage in the task manager it shows nearly 90 to 95 % full but I ...
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2answers
27 views

How do I limit Oracle's memory use?

I would like to use Oracle's automatic memory management, with a limit of around 4GB. (Past experience has shown this to be plenty for my dev PC and that it is easier to get an idea about any ...
7
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2answers
389 views

Why is SQL Server 2014 consuming so much RAM with no active data stored?

I'm running SQL Server 2014 on my laptop along with a ton of other installed applications, from Visual Studio to video games. This is obviously not a production server, but for development and ...
2
votes
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 ...
3
votes
1answer
17 views

ORA-00845 after deleting files accidentally at /dev/shm

I have two instances (ORA1 and ORA2) of Oracle 11g at the same machine. One is starting the other cannot startup anymore. What happend: First my disk was full, so I accidentally deleted all ...
4
votes
5answers
801 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 ...
1
vote
1answer
130 views

Limit the RAM memory usage in MongoDB

I am using MongoDB-2.6.1. Is there any way to limit the RAM memory usage? For example: Out of 4 GB RAM, let MongoDB use till 3 GB (<= 3 GB).
0
votes
1answer
375 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 ...
8
votes
3answers
183 views

Configure RAM for SQL Server and NUMA

Accidental DB admin here. Question: Would you still manually limit max RAM for SQL Server even though the sole purpose of that server is to serve SQL Server database engine only? I have Microsoft ...
2
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3answers
33k views

SQL Server 2008 R2 High memory usage

I have SQL Server 2008 R2 that runs multiple jobs over night, the problem is SQL Server will eat up all RAM and CPU, then it will not release the RAM resources after the job finishes, as a workaround ...
2
votes
2answers
153 views

SQL Server memory issue

As soon as I start SQL Server with no application querying, in the task manager it starts to consume memory very fast till it consumes around 15GB. How can I resolve this issue?
4
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2answers
2k views

SQL Server Memory Paging Issue

We have a dedicated SQL server running Windows Server 2003 R2 Standard x64 SP2 and SQL Server 2005 (64-bit) Standard Edition with 16GB RAM. Every night we're experiencing severe performance issues ...
2
votes
2answers
269 views

SQL Server 2008R2 Ent + Win2003 Ent R2 32bit will not use all available memory

Server: HP ProLiant DL380 G5 2 proc -2x QuadCore Intel Xeon E5450, 3000 MHz Memory- 12288 Мб (DDR2-667 Fully Buffered ECC DDR2 SDRAM) Settings: /3GB in the boot.ini. /PAE in the boot.ini. ...
22
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3answers
2k 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 ...
1
vote
1answer
251 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). ...
2
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0answers
45 views

MEMORYCLERK_SQLOPTIMIZER in SQL 2012 Memory usage extremely high and causes server to crash

I have been having issues with our SQL server for a while now. It seems to run out of memory every few days and when I look at the memory dump, the MEMORYCLERK_SQLOPTIMIZER seem to take over memory ...
4
votes
1answer
63 views

SQL Server 2012 Crashes and service doesn't restart

We've been having an issue with our SQL server lately. It seems that the server will run out of memory and then crash. For some reason, the sql service wouldn't restart. I would have to go and ...
0
votes
1answer
202 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
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2answers
54 views

MySQL Server > 90% memory consumption

I have a fairly large (16 vCPU / 47 GB of RAM) linode box which hosts a running MySQL Server. This box currently does nothing else (and we are not planning to install anything else on it for now). ...
4
votes
1answer
103 views

NUMA Nodes - MAXDOP - PLE

We have a server with 8 CPUS across 2 NUMAs with hyperthreading enabled. Currently Maxdop is set to 8, but actually should be set to 4 as per the Maxdop section of this article: ...
0
votes
1answer
61 views

System.OutOfMemoryException SQL Server 2012 and 2008R2

I have a 64-bit and 64gb memory for both SQL Server 2012 and 2008R2, when I generate a report w/c has 900K rows, it finished the query smoothly and no problem, but when I'm going to copy the result ...
0
votes
1answer
137 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 ...
0
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2answers
64 views

SQL Server 2008 R2 - Memory Allocation

We have a SQL Server 2008 R2 instance that is running on a Windows Server 2008 R2 Enterprise server that has been allocated 128GB of memory. However, it maxes out at 70GB. Can anyone tell me how I can ...
0
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2answers
139 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
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0answers
41 views

Relationship between file shrink and used memory in SQL Server

Some background info: this is a test SQL Server 2012, with restored databases from production servers, all of them with over 20% space available in the data file, up to even 50%. I'd rather restore as ...
0
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1answer
71 views

Memory usage on select for large number of rows

I am trying to dump the entire contents of a large table, from the command line using pqsl, but am running into a problem where memory usage goes up, to the point where the process is killed, before ...
1
vote
1answer
35 views

Increase memory limit when server is stopped

There was a local SQL Server 2012 instance. Once memory has decreased to critical 128 MB and then has stopped by me. I can not start it (idea: not enough memory). Is it possible to increase this ...
2
votes
2answers
108 views

Seeking help to test a use case on sql server memory

This is a question which came out of curiosity to know of how SQL Server handles memory. Assume I set a very low value for max server memory and I increase my workload like running dbcc checkdb, ...
2
votes
1answer
78 views

SQL server Memory components

I am trying to understand different memory components in sql,so far my research lead me understand below ,If SO DBAs can confirm my understanding/add something if i am missing,i will be really ...
0
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0answers
53 views

Maxing out the shared pool's memory by executing many UPDATE statements (ORA-04031)

I was executing a bunch of UPDATE statement. Around ~32.8K got executed and committed, then got the error: cx_Oracle.DatabaseError: ORA-04031: unable to allocate 3896 bytes of shared memory ...
2
votes
2answers
53 views

SQL Server total memory less than target memory, lot of extra memory unallocated

The situation is the following: We have a SQL2008r2 server (64bit on 64bit Windows) with SSRS installed on it. The Max Memory is set to 6GB, the server has 12GB total memory. The target server ...
0
votes
0answers
25 views

Memory consumption of production MySQL

The MySQL database on one of my production servers consumes a lot of memory. The problem is that I cannot trace what causes that kind of high memory usage. Following values illustrate the problem. ...
0
votes
1answer
46 views

MySQL on Ubuntu consuming almost all RAM

I've been having an issue with MySQL crashing randomly, apparently as a result of not having enough available memory (as discussed here: ...
1
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1answer
57 views

High Page Faults/sec low Page Reads/sec

I currently have Page Faults/sec avergaing 1269 while my Page Reads/sec is averaging 0.3. I am just trying to interpret what this means. I assume I am getting lots of soft page faults in this case ...
4
votes
2answers
224 views

External Memory Pressure

I have a few "gaps" in my understanding of external memory pressure. I've found quite a bit of helpful information online, including this info from SQLSkills.com. SQL Server has a built-in ...
1
vote
1answer
73 views

Hyper-V Dynamic Memory and SQL Server

I will probably get voted down for this, but does anyone have a good place to start other than the Best Practices Documentation for using Dynamic memory with SQL server. We are experiencing issues ...
0
votes
0answers
39 views

SQL Server consuming large amount of RAM [duplicate]

I have Server 2012 with two 2.10 Ghz processors and 64GB of RAM. I have SQL server 2008 installed on this server. but this SQL server is consuming 70-80% of memory. I have limited SQL memory to 24GB ...
1
vote
0answers
33 views

MySQL Cluster 7.4.6 - Analyze table failure on 15m reference table

I'm running MySQL Cluster 7.4.6 on Azure VM's with the following infrastructure: 2 x Mgmt Nodes: Ubuntu 14.10LTS, 2 cores, 3.5GB ram 2 x MySQL API Nodes: Ubuntu 14.10LTS, 2 cores, 3.5GB ram 2 x Data ...
7
votes
2answers
11k views

Quick look at how much RAM is allocated to SQL Server?

With SQL Server 2005, you could look at the Task Manager and, at least, get a cursory look at how much memory is allocated to SQL Server. With SQL Server 2008, the Working Set or Commit Size never ...
0
votes
1answer
56 views

Performance of MySQL BLOB fields processing

Suppose, I have large (about 1 GB) strings in ASCII encoding. I have to choose whether to store them as separate blob fields or split each one of them into smaller pieces and then store them as ...
2
votes
0answers
120 views

Multi-Instance Windows Failover Cluster - Min / Max Memory Allocation Dilemma

We run numerous 2 node SQL Server 2008 R2 Failover Clusters in Windows Server 2008 R2 on a VMWare eSXi virtual platform. Each cluster hosts 3-4 SQL instances with varying degrees of memory ...
0
votes
1answer
62 views

Maximum possible memory usage: 23.6G (785% of installed RAM)

I have a virtualized 32bits Server for Mysql (RAM : 115 Go). I am trying to optimize with mysqltuner and I get this : >> MySQLTuner 1.1.1 - Major Hayden <major@mhtx.net> >> Bug ...
11
votes
4answers
10k views

SQL Server Max Memory not limiting use of RAM

I would like your input on this. I have a sql server 2008r2 Ent. Ed. 64bit with 16 cores and 64GB RAM. There is one instance of SQL server patched fully as of 20111014. The max ram is set to 60000MB. ...
0
votes
0answers
14 views

maximum server memory setting in SQL Server [duplicate]

Just had a memory issue on a 64GB of RAM machine with SQL Server 2012 SP2. 3 running db engine instances, each limited to 16GB (16384). But noticed in Task manager that sqlservr.exe was at over 30GB ...
1
vote
1answer
4k views

AWE memory usage growing with SQL Server 2012

I've got a problem with my SQL Server 2012 installation on my Windows 2008 R2 x64 box. (heads up: I have no idea what I'm talking about...I'm in over my head, since I have no real DBA ...
23
votes
5answers
11k views

Why would I NOT use the SQL Server option “optimize for ad hoc workloads”?

I've been reading some great articles regarding SQL Server plan caching by Kimberly Tripp such as this one: http://www.sqlskills.com/blogs/kimberly/plan-cache-and-optimizing-for-adhoc-workloads/ Why ...
0
votes
0answers
52 views

During Peak hours memory utilization is too high?

I am using MySQL 5.1 and its memory size is 16GB,during peak hours it consuming complete memory only 200 mb of memory were free and My database size is only 500mb as well as no long running queries ...
0
votes
0answers
64 views

mysql eating RAM without queries?

Somehow MySQL eats up 50% of my RAM on the server being used. I checked and there are no queries, show full processlist is empty. I restarted the mysqld and within a couple of minutes the RAM usage ...
1
vote
1answer
443 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: ...
4
votes
3answers
2k 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 ...