Oracle cannot monitor

oracle snooping could have been set up, but suddenly I couldn"t connect to the database, so I deleted the original listening file, and then reproduced the installation and found the following problems

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the hostname also has a correspondence, so suddenly it can"t get up. Is the jvm space full? if so, how to release it

Nov.23,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1bf015b-31cef.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bf015b-31cef.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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