On-Line状态一直处于CKPT REQ状态处理过程

问题：检查数据库时发现On-Line状态一直处于CKPT REQ状态，
-bash-3.2$ onstat -

IBM Informix Dynamic Server Version 11.50.UC6 -- On-Line (CKPT REQ) -- Up 04:18:49 -- 144144 Kbytes

检查逻辑日志，发现已经全部占满
-bash-3.2$ onstat -l

IBM Informix Dynamic Server Version 11.50.UC6 -- On-Line (CKPT REQ) -- Up 03:53:41 -- 144144 Kbytes
Blocked:CKPT

Physical Logging
Buffer bufused bufsize numpages numwrits pages/io
P-1 40 64 9402 168 55.96
phybegin physize phypos phyused %used
1:263 25000 9531 104 0.42

Logical Logging
Buffer bufused bufsize numrecs numpages numwrits recs/pages pages/io
L-3 4 32 475230 30000 4278 15.8 7.0
Subsystem numrecs Log Space used
OLDRSAM 475189 55702620
HA 41 1804

Buffer Waiting
Buffer ioproc flags
L-3 0 0x1 0

address number flags uniqid begin size used %used
4aed9b88 1 U------ 1 1:25263 5000 5000 100.00
4aed9bd0 2 U------ 2 1:30263 5000 5000 100.00
4aed9c18 3 U------ 3 1:35263 5000 5000 100.00
4aed9c60 4 U------ 4 1:40263 5000 5000 100.00
4aed9ca8 5 U------ 5 1:45263 5000 5000 100.00
4aed9cf0 6 U---C-L 6 1:50263 5000 5000 100.00

进行逻辑日志备份
-bash-3.2$ ontape -c

Performing continuous backup of logical logs.
File created: /home/informix/data/yuyu.com_50_Log0000000001
File created: /home/informix/data/yuyu.com_50_Log0000000002
File created: /home/informix/data/yuyu.com_50_Log0000000003

再次检查On-Line状态已经恢复正常
-bash-3.2$ onstat -

IBM Informix Dynamic Server Version 11.50.UC6 -- On-Line -- Up 04:31:15 -- 144144 Kbytes