ORA-12537: TNS:connection closed - 数据库编程

-2013 16:43:01 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=ract1)(USER=grid))(COMMAND=status)(ARGUMENTS=64)(SERVICE=LISTENER)(VERSION=186647040)) * status * 0

type='UNKNOWN' level='16' host_id='ract1'
host_addr='10.20.31.36'>
15-JAN-2013 16:43:03 * (CONNECT_DATA=(SERVICE_NAME=racdb)(CID=(PROGRAM=sqlplus@ract1)(HOST=ract1)(USER=oracle))) * (ADDRESS=(PROTOCOL=tcp)(HOST=10.20.31.36)(PORT=47268)) * establish * racdb * 12518

type='UNKNOWN' level='16' host_id='ract1'
host_addr='10.20.31.36'>
TNS-12518: TNS:listener could not hand off client connection
TNS-12547: TNS:lost contact
TNS-12560: TNS:protocol adapter error
TNS-00517: Lost contact
Linux Error: 32: Broken pipe

type='UNKNOWN' level='16' host_id='ract1'
host_addr='10.20.31.36'>
15-JAN-2013 16:43:05 * service_update * racdb1 * 0

[grid@ract1 ~]$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.BACKUP.dg ora....up.type ONLINE ONLINE ract1
ora.DATA.dg ora....up.type ONLINE ONLINE ract1
ora....FILE.dg ora....up.type ONLINE ONLINE ract1
ora....ER.lsnr ora....er.type ONLINE ONLINE ract1
ora....N1.lsnr ora....er.type ONLINE ONLINE ract2
ora.asm ora.asm.type ONLINE ONLINE ract1
ora.cvu ora.cvu.type ONLINE ONLINE ract2
ora.gsd ora.gsd.type OFFLINE OFFLINE
ora....network ora....rk.type ONLINE ONLINE ract1
ora.oc4j ora.oc4j.type ONLINE ONLINE ract2
ora.ons ora.ons.type ONLINE ONLINE ract1
ora.racdb.db ora....se.type ONLINE ONLINE ract1
ora....SM1.asm application ONLINE ONLINE ract1
ora....T1.lsnr application ONLINE ONLINE ract1
ora.ract1.gsd application OFFLINE OFFLINE
ora.ract1.ons application ONLINE ONLINE ract1
ora.ract1.vip ora....t1.type ONLINE ONLINE ract1
ora....SM2.asm application ONLINE ONLINE ract2
ora....T2.lsnr application ONLINE ONLINE ract2
ora.ract2.gsd application OFFLINE OFFLINE
ora.ract2.ons application ONLINE ONLINE ract2
ora.ract2.vip ora....t1.type ONLINE ONLINE ract2
ora....ry.acfs ora....fs.type ONLINE ONLINE ract1
ora.scan1.vip ora....ip.type ONLINE ONLINE ract2

ORA-12537: TNS:connection closed(二)