Is there a limit on number of transactions included in a block? [duplicate]


Short answer: Yes, there's a limit but it depends on transaction size, not count.

Basic summary of blocks

Miners are incentivized to put as many transactions into a block as they can with fees. The more transactions, the more fees the miner collects, and than can mean an extra coin on top of block rewards. A block gets bigger as more transactions are added, this is the problem and reason fees need to be a certain amount.

Block size limit explained

But the more transactions a block has the larger it gets in size and larger blocks can fail to propagate, creating an orphan block. Orphan blocks cause a lot of pain to the network, the miner loses 25 BTC (current block reward) and certain confirmed transactions become unconfirmed. To prevent this from happening often, the Bitcoin protocol has a block size limit to enable speedy propagation and reduce anomalies. Each block has a size limit of 1,000,000 bytes. This can change based on community consensus and...

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Transactions are broadcasted by anyone in the system and at random intervals. Which transactions, of all the ones broadcasted, are included is very dependent on the miner, as he/she is the one who groups them up and includes them in the block. As Nate noted below, there is also a 1MB block size limit which limits how many transactions can be included in a block. This limit is to prevent huge blocks that clog the network and may be removed if the number of transactions in the network ever grows such that the limit is a serious factor.

Good miners accept all transactions with the standard 0.0001 BTC fee (which is mainly a spam prevention measure). Bad miners are selfish and avoid including transactions to decrease their propogation time. For example, look at this block to see an example where a miner didn't include any transactions except for their own reward transaction.

If you look at then you can see how many transactions are included in each...

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The July release for Dynamics AX 2012 R3 version is now available in LCS on the updates tile inside your R3 project. This update represents a typical collection of smaller functional improvements and technical fixes. Bugs were fixed in all areas with enhancements found in Warehouse & Transportation, Retail, DIXF and Project Accounting. Please see the full list of hotfixes below to search for your specific issue newly included in this release. This release is a cumulative package including all other fixes released in the prior CU12 update. This release is intended to give visibility into fixes recently shipped for R3, including some features and design changes that are newly released in this month.

Here are a few details related to this release:
• Primary Build: 6.3.5000.6242
• Number of Application hotfixes: 111
• Number of Binary hotfixes: 31

Details of the...

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Possible Duplicate:
MySQL number of items within “in clause”
In mysql or postgres, is there a limit to the size of an IN (1,2,n) statement?

I build an "IN" list dynamically and I was wondering if there is a limit to the size of the IN clause in mysql.

SELECT foo FROM bar WHERE bar_key IN ('prod1', 'prod2', 'prod50', ...'last prod')

I imagine there is a limit to the total length of a SQL statement but I can't find it in the manual.

I do know that an alternative is to build a temp table and join with it, though I'm not sure where the performance tradeoff exists if I have to execute many INSERT statements. Of course if I could populate the temp table with a single INSERT that would be fast, but that's not possible in my case.

So my first question is what are the mysql limits and I'd appreciate if you can point me to relevant pages in the...

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By far the most common issue I’ve come across with ecommerce sites; duplicate transactions can inflate revenue and ecommerce metrics, altering your attribution reports and making you question your data integrity.

When talking about where to put the ecommerce tracking code, Google suggests the following for Universal Analytics:

… If successful, the server redirects the user to a “Thank You” or receipt page with transaction details and a receipt of the purchase. You can use the analytics.js library to send the ecommerce data from the “Thank You” page to Google Analytics.”

The missing step here is to ensure that either A) the user cannot access the page more than once or B) you have logic in place to make sure the transaction is only sent once. The biggest issues I’ve seen are when this receipt page is automatically emailed to the customer, with the ability for them to return as frequently as they please, each time sending a duplicate transaction.

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-1 of 2- 27 Jul 2017 05:00:00 UTC Press Release: HuntsmanClariant merger on track

Clariant AG / HuntsmanClariant merger on track . Processed and transmitted by Nasdaq Corporate Solutions. The issuer is solely responsible for the content of this announcement.

-- High confidence in meeting synergy target in excess of $400 million and $25 million tax saving target

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Muttenz, July 27, 2017 - Clariant (SIX: CLN) and Huntsman Corporation (NYSE: HUN) today presented a first...

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Does Yodlee gather the time of a transaction from the financial sites for transactions that are posted on their sites?

No, most sites do not provide the time stamp for a transaction.

How many transactions does Yodlee pull on account addition?

On account addition Yodlee will only pull a maximum of 90 days of transactions.

Does Yodlee provide merchant name in the transaction?

Yes, Yodlee provides merchant name in the transaction.

Is the transactionId for each transaction always the same and unique?

Yes, the transactionId is the unique identifier for a transaction.

How do I retrieve transaction based on transaction status - posted or pending?

To get transactions specific to a particular status you can set the TransactionStatus as a parameter in TransactionSearchFilter while using executeUserSearchRequest API.

Below is the code snippet to set search filter in REST:

To get posted transactions:
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Well, I guess I have my answer...

I tried to narrow down an issue I get on one of the production sites, where using a similar transaction I get the same error.

In my production environment the group id is actually a unique number for the terminal (terminalid) and the same transaction CANNOT be called for the same terminalid. So this should never happen because each terminal has its own ID and this procedure is called on login operation for each terminal... At least that's what I thought so...

But it does happen during the nightly online backup (pg_dump).
It looks like when the client logs in, the request is sent from the client to the db, the backup (pg_dump) slows down the server (or holds the lock on that table?) and the user does not have patience and restarts the client and logs in again.
In this case I can get two parallel transactions for the same terminal...

Thanks a lot for your answers,
Ioana Danes


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This chapter defines a transaction and describes how the database processes transactions. This chapter contains the following sections:

Introduction to Transactions

A transaction is a logical, atomic unit of work that contains one or more SQL statements. A transaction groups SQL statements so that they are either all committed, which means they are applied to the database, or all rolled back, which means they are undone from the database. Oracle Database assigns every transaction a unique identifier called a transaction ID.

All Oracle transactions obey the basic properties of a database transaction, known as ACID properties. ACID is an acronym for the following:


All tasks of a transaction are performed or none of them are. There are no partial transactions. For example, if a transaction starts updating 100 rows, but the system fails after 20 updates, then the database rolls back the changes to these 20 rows.

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One of the most common headaches while implementing the ecommerce tracking on a site is trying to match the tracked transactions by the shop backend to Google Analytics. As most tracking solutions are JavaScript based, there’s a small chance of losing some of them and there’s nothing we can do without playing with the measurement protocol and some server-side tracking.

Another problem that is usually present is having duplicated transactions. And this hopefully is something we can prevent with some code.

We can setup a tag to write a cookie each time a visitor views our “thank you” page, that is not a bad approach, but that way we won’t be sure that the transaction has been really tracked on Google Analytics.

We’re going to use the hitCallback feature available for Universal Analytics, to set the cookies just right after the data has been successfully sent to Google Analytics.

We’ll need to set the hitCallback value in our Google Tag Manager Tag...

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It is commonly misconceived that there is a limit on the number of fields you can add to a field group. ACF does not contain a limit, however, your server does contain a limit on how many variables can be used on each page.

To reiterate, ACF is not limiting the number of fields you can save, instead, the server is simply terminating the save process before ACF can finish it’s job.

The most common solution is to increase your max_vars setting. This is a PHP setting which determines how many variables can be used in one page load. By increasing this limit, you will allow ACF to complete it’s job.


You can increase this setting by creating a php.ini file. This file may already exist on your server, but it is most likely you will need to create this yourself. Please note that your web host will be happy to help you create this file, so please contact them if you run into any difficulties.

In the php.ini file, you can add this...

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Commission fee can be included in any transaction in the Bitcoin network.

Principles of operation

Currently a large amount of transactions is processed in a way that commission isn't necessary. At the same time in case if transaction has a lot of entry points (e.g. it carries large amounts of data) a small commission is not uncommon.

Any miner can be the one who processes the transaction and earns the commission fee. When the network finds a new block it includes all information about transactions including their commission. Thus any user of group of users who find that block will gain both the reward for the block and the commission fees for every transaction included in it.

Including commission in a transaction is a voluntary decision but a user who finds a block can attach any transactions he wants to the said block. That way transactions with 0 commission have the lowest priority when transactions with even the minimal possible commission (~0.0001...

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Query is a way to group records; it is not a reporting tool. The query output simply shows you whether the record belongs in the query. If a field with a one-to-many relationship is in your filters, output, or sort, the record will appear multiple times-- once for each time the record meets the criteria. This allows you to check your query to ensure you get the expected results.

For example, if the Phone Number field is selected in the output and a person's record has three phone numbers, the person appears three times in the results, once for each phone number.

Note: The record is pulled into the query only once. Based on your criteria, output, or sort fields, it may display multiple times. Because query is not a reporting tool, we recommend using the query to filter Export, Reports, Mail, etc.; each record will only display once when used as a filter.

Before following these steps, make sure you are using the correct query type. For example, let's say...
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If you've been in crypto for a while, you've heard of the block size and the everlasting debate that surrounds it. This debate has plagued the community for years and it has pretty much torn it apart into two groups: Those in favor of a blocksize increase and those against it. But maybe you haven't been around long enough to know what the block size and the block size limit mean and why it's so heavily debated in the crypto sphere.

The block size issue is much more than just a curiosity or technicality and it could indeed define the future of Bitcoin as a mainstream currency. So, what is the block size and why does it matter? Why are there groups that defend the block size limit while others push for an immediate increase?

What is the Block Size

As you most likely know, Bitcoin is a blockchain-based cryptocurrency. All the transactions that take place within the network are recorded on this blockchain, a public ledger that can be seen by anyone but...

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What is HubPro?

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HubPro Editing is a mandatory service,...

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Oracle Essbase is an OLAP (Online Analytical Processing) Server that provides an environment for deploying pre-packaged applications or developing custom analytic and enterprise performance management applications. Oracle Essbase, along with Oracle BI Suite Enterprise Edition Plus, is part of the Oracle BI Foundation.

With a rapid application development environment, Oracle Essbase enables business users to quickly model complex business scenarios. Aside from its high scalability, a key strength of Oracle Essbase lies in its ability to allow users to "write back" to an application's data repository under security. This makes it ideal for developing forward looking applications such as forecasting, scenario modeling, and "what if" type analysis.

With Oracle Essbase, organizations define a dimensional view of their business—and provide business users with new levels of self-sufficiency to access, navigate, and gain actionable insight into critical business issues. All...

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