今天在檢查系統時，在執行su - oracle切換用戶時顯示信息
# su - oracle
Killed
解決：
執行df -k檢查文件系統的利用率情況發現/tmp的文件系統達到100%目錄下有許多crout開頭的文件
root@gaoqiao:/tmp#ls
croutABHZ1b4By croutFSG1YbizX croutLAHZAbOUB croutQEBayaGRN croutVWGnubGRN
croutAFGETbizX croutFTB2.aa2c croutLAHyacGJF croutQEBiDaOUB croutVXDOFbGJF
croutAHAtUa4By croutFUA4bba3j croutLAHzvbOUW croutQEFWIbizX croutVXFkfbqOv
croutAIBt6aa2c croutFUCz6aq6F croutLBAcSa4By croutQEGTSb4By croutVXGh1bizX
croutAIFHJb4By croutFUDlZaOUW croutLBD9WaOUB croutQFB64aizX croutWAALPaiki
croutAJElKbGJF croutFXATuaOUW croutLBDIwbGJF croutQFFxTbGJF croutWABlbbGJF
croutAJHa0byza croutFYDLgbq6F croutLBDJRaOUW croutQGAWFaq6F croutWCHywbOUW
croutAKC3FaqOv croutFYG4pbqOv croutLCCiyaaUU croutQGE9UaaUU croutWFB9oaaUU
croutALGqQbyza croutGADplb4By croutLCFqHb4By croutQHF.ubq6F croutWFDHnb4By
croutAMAkqaOUW croutGBC5lbGJF croutLDBA3a4By croutQKGWVbizX croutWFGcnbOUW
...
$ df -k
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/dsk/c1t0d0s0 10086988 9142843 843276 92% /
/dev/dsk/c1t0d0s1 10086988 4349279 5636840 44% /usr
/dev/dsk/c1t0d0s4 15128715 7535211 7442217 51% /var
swap 2376096 112 2375984 1% /var/run
swap 2376728 2376700 28 100% /tmp
/dev/dsk/c1t1d0s0 58871389 42543493 15739183 73% /data
/dev/dsk/c1t0d0s5 25201224 18145725 6803487 73% /opt
/dev/dsk/c1t0d0s3 10086988 7800783 2185336 79% /export/home
刪除/tmp目錄下所有的臨時文件後，切換用戶正常，問題解決。