Urgent: Latch free increasing on latch#94

[samdba]

Hi all,

I am having issue right now on Production database. There are total latch free event show 16 latch free events and its increasing.

It is having 94 in P2 column of v$session_wait, which is 'temp lob duration state obj allocation' event in v$latch.

There is no note on metalink on this latch name.

Also, there is no row in v$latchholder.

What should I do? Its very urgent.

Thanks in adv for any help.

Update: Now even ORACLE.exe (type Background) is also waiting on this latch and I got foll. msg in PMON trace.

*** 2003-07-17 09:18:09.421
*** SESSION ID:(1.1) 2003-07-17 09:18:09.390
PMON unable to acquire latch 13cd3b8 temp lob duration state obj allocation
*** 2003-07-17 09:18:09.421
*** 2003-07-17 09:28:10.765
PMON unable to acquire latch 13cd3b8 temp lob duration state obj allocation
*** 2003-07-17 09:28:10.765
*** 2003-07-17 09:38:12.109
PMON unable to acquire latch 13cd3b8 temp lob duration state obj allocation
*** 2003-07-17 09:38:12.109
*** 2003-07-17 09:48:13.453
PMON unable to acquire latch 13cd3b8 temp lob duration state obj allocation
*** 2003-07-17 09:48:13.453
*** 2003-07-17 09:58:14.765
PMON unable to acquire latch 13cd3b8 temp lob duration state obj allocation
*** 2003-07-17 09:58:14.765
*** 2003-07-17 10:08:17.109
PMON unable to acquire latch 13cd3b8 temp lob duration state obj allocation
*** 2003-07-17 10:08:17.109