Unable to Categorize

I'm working with the same problem 

/log/nSXLd.log

[2018-09-04 15:22:02] <1994557376> [error] nSXLd: Unable to create socket because: Too many open files
[2018-09-04 15:22:02] <1994557376> [error] nSXLd: Unable to create socket because: Too many open files
[2018-09-04 15:22:02] <1994557376> [error] nSXLd: Unable to create socket because: Too many open files
[2018-09-04 15:22:02] <1994557376> [error] nSXLd: Unable to create socket because: Too many open files
[2018-09-04 15:22:02] <1994557376> [error] nSXLd: Unable to create socket because: Too many open files
[2018-09-04 15:22:02] <1994557376> [error] nSXLd: Unable to create socket because: Too many open files
[2018-09-04 15:22:02] <1994557376> [error] nSXLd: Unable to create socket because: Too many open files
[2018-09-04 15:22:02] <1994557376> [error] nSXLd: Unable to create socket because: Too many open files
[2018-09-04 15:22:02] <1994557376> [error] nSXLd: Unable to create socket because: Too many open files
[2018-09-04 15:22:03] <1994557376> [error] nSXLd: Unable to create socket because: Too many open file

[2018-09-04 15:22:03] <1994557376> [error] nSXLd: Unable to create socket because: Too many open files
[2018-09-04 15:22:03] <1994557376> [error] nSXLd: Unable to create socket because: Too many open files
[2018-09-04 15:22:03] <1994557376> [error] nSXLd: Unable to create socket because: Too many open files

any ideia to solve this problem ?

CR100iNG (SFOS 17.0.8 MR-8)

the firewall is able to go to internet 

ping peak.wing.sophosxl.net
PING peak.wing.sophosxl.net (52.26.29.75): 56 data bytes

ping primary.wing.sophosxl.net
PING primary.wing.sophosxl.net (52.28.130.115): 56 data bytes

MR-8# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8): 56 data bytes
64 bytes from 8.8.8.8: seq=0 ttl=122 time=29.893 ms
64 bytes from 8.8.8.8: seq=1 ttl=122 time=29.633 ms
^C
--- 8.8.8.8 ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max = 29.633/29.763/29.893 ms
CR100iNG_CA01_SFOS 17.0.8 MR-8# ping www.google.com
PING www.google.com (172.217.30.36): 56 data bytes
64 bytes from 172.217.30.36: seq=0 ttl=55 time=22.436 ms
64 bytes from 172.217.30.36: seq=1 ttl=55 time=21.773 ms
^C
--- www.google.com ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max = 21.773/22.104/22.436 ms

thanks in advanced

I have seen this once before on an *very* unstable Internet connection, I assumed at the time that the SXL service was spawning a connection when doing a category lookup which died when the connection went down, then when it came back up again tried again without cleaning up.

A reboot fixed it along with getting the ISP to sort out the fibre connection.

Not sure if that's of any help. This might have been fixed in later releases, I've not seen it since.

Please note the "Too many open files" was a bug that was resolved in 17.1

If anyone is running the latest release and still has problems with categorization, please let us know.

I am having the URL "Unable to categorize" problem on a replacement RMA XG310 (SFOS 17.5.3 MR-3) appliance. 

User error.  The gateway ip address was set to the core switch while I was downloading the firmware and pattern updates prior to adding the XG back in-line with the Cisco ASA.  As soon as I changed the gateway back to the ASA's ip address, categorization was working again.