oracle 11g ORA-12514问题

用sqlplus登陆数据库时，会出现12514的问题。
sqlplus sys@test as sysdba输入密码后出现ORA-12514: TNS:listener does not currently know of service requested in connect
descriptor，上网查询许多未果。包括官网，希望有经验的朋友指教

当启动lisener后再创建新的数据库时，可正常登录。重启后，正常开启lisener，就会出现如上问题。

查看listener.ora内容为：
LISTENER =
  (DESCRIPTION_LIST =
  (DESCRIPTION =
  (ADDRESS = (PROTOCOL = TCP)(HOST = HUAANserv)(PORT = 1521))
  (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
  )
  )
ADR_BASE_LISTENER = /opt/oracle

查看status信息为：
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=HUAANserv)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Solaris: Version 11.2.0.1.0 - Production
Start Date 31-MAR-2010 10:58:28
Uptime 0 days 0 hr. 8 min. 22 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/oracle/product/11.2/network/admin/listener.ora
Listener Log File /opt/oracle/diag/tnslsnr/HUAANserv/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=HUAANserv)(PORT=1521)))
  (D