Cannot perform dump of the base

I cannot perform dump of the base ising phpmyadmin export feature (compressed output). I get error message - FATAL: "erealloc(): Unable to allocate 3453221 bytes"

I tried to adjust value of memory limit (up to 300 M) in php.ini and also have turned $cfg['CompressOnFly']=FALSE in configfile of phpmyadmin, but it doesn't get it workCannot perform dump of the base . All necessary compression features of php are enabled.

Database is not corrupted. I can do the dump with mysqldump tool and it will be 52 M. Also is possible to perform uncompressed dump of this base and compressed dumps of other smaller bases.

It seems to be there really unsofficient amount of available memory for this operation, but I don't know how to adjust it. May be anybody knows?

Thanks.

 

 

 

 

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