How to save material with a large number of characters in Joomla?

Question

PHP

Good afternoon!
There was a problem on one of the sites hosted on our hosting.
The site works on CMS Joomla 2.5
The problem is the following, when saving material with a large number of characters, the material is not saved. Those. the material itself was created a long time ago, but any changes in it are not saved, and when you click on the save button, the save message does not exit. At the same time, everything that was printed new in the material disappears.
Hosting on CentOS, there is no selenium in php, there are no people who are responsible for hosting, so they let me figure it out.
Found such an info that you need to change the post_max_size parameter in php.ini. But changing this setting did nothing.

Answer 1

Can be changed directly in the database.
Why doesn't it come out? Unable to save due to limits?