The name given to the process of encoding data such that it uses lesser number of bits as compared to the original representation.

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4
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1answer
172 views

Page compression not working?

I have created a table where I have around 100 partitions (per month), all of them are configured to use page compression. After that I'm inserting data to this table month by month. I now would ...
0
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1answer
57 views

Migrate database from SQL Server 2008 Enterprise to SQL Server 2014 Standard

I need move database with "data compression" from SQL Server 2008 Enterprise to SQL Server 2014 Standard. But Standard edition does not support "data compression". How can I disable "data ...
0
votes
1answer
40 views

Will canceling InnoDB compression that's already in progress corrupt data?

I have a 155GB table that is in the process of being compressed. ALTER TABLE $table_name ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=8; This compression has been running for a long time and is impeding my ...
2
votes
0answers
681 views

Understanding how sys.dm_exec_requests represents queries being rolled back

I'm not sure whether this was an actual problem or just a normal situation where I needed to wait for rollback to finish. In either case, some insight would be appreciated. Background details I ...
1
vote
0answers
36 views

How come MongoDB WiredTiger snappy & zlip compression consumes same memory

To specify compression for specific collections, you’ll need to override the defaults by passing the appropriate options in the db.createCollection() command. For example, to create a collection ...
1
vote
0answers
56 views

Estimating compression ratio for SecureFile LOBs?

We made a migration from Oracle 10 to 11.2. Our lob objects are currently stored in the original LOB storage architecture. But 11g introduced the SecureFile storage architecture and we want to use ...
1
vote
0answers
87 views

Data compression within Internal Tables in SQL server 2008R2

We are doing downgrade from enterprise to standard for couple of servers which are not using any enterprise features: For one of our TFS(Team foundation server) database TFS_resx, when we ran ...
1
vote
0answers
546 views

What are the compression options for storing large amounts of text in Postgres?

I need to store large amounts of text in Postgres, mainly command logs and the output of long running commands and need to know if there are some settings that could help compress the data ...
0
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0answers
28 views

Oracle - compressed subpartitions in uncompressed table

I am working with Oracle 11.2. I have table which on subpartition level has in DBA_Tab_subPartitions column COMPRESSION set to ENABLED for all subpartitions. But on partition level in ...
0
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0answers
25 views

MongoDB: poor compression rates

I'm importing a small set of data from Oracle in MongoDB. Basically, I have a table which is about 1Gb in Oracle (avg_row_len x nb. rows, i'm not counting the index sizes. Though data is compressed). ...
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0answers
46 views

Does MySQL InnoDB compression combined with Windows compression save more space?

We have a very large MySQL InnoDB database, compressed using the following syntax at the end of the table declaration: ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4 We also have windows ...