Trick to read a database alertlogfile in detail
[oracle@node1 trace]$ ls -ltrh alert_QLAB.log
-rw-r----- 1 oracle oinstall 61K Feb 20 00:32 alert_QLAB.log
[oracle@node1 trace]$ du -sh alert_QLAB.log
68K alert_QLAB.log
[oracle@node1 trace]$ cat alert_QLAB.log |wc -l
1496
[oracle@node1 trace]$
[oracle@node1 trace]$ tail -500 alert_QLAB.log > newalerbymkm.log
[oracle@node1 trace]$ du -sh newalerbymkm.log
20K newalerbymkm.log
[oracle@node1 trace]$ cat newalerbymkm.log |wc -l
500
[oracle@node1 trace]$vi newalerbymkm.log
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