1) in my alert file

Fri Sep 19 12:14:25 2003
alter database open
Beginning crash recovery of 1 threads
Fri Sep 19 12:14:25 2003
Thread recovery: start rolling forward thread 1
Recovery of Online Redo Log: Thread 1 Group 3 Seq 10007 Reading mem 0
Mem# 0 errs 0: /oracle/SID/origlogA/redo03.dbf
Mem# 1 errs 0: /oracle/SID/mirrlogA/mirr03.dbf
Fri Sep 19 12:14:25 2003
Thread recovery: finish rolling forward thread 1
Thread recovery: 26 data blocks read, 26 data blocks written, 24 redo blocks read
Crash recovery completed successfully

is this a major concern?

3) in my trace file timestamp is 7am

Redo thread mounted by this instance: 0
Oracle process number: 0
Unix process pid: 2402, image: ora_pmon_SID

OPIRIP: Uncaught error 1034. Error stack:
ORA-01034: ORACLE not available

4) in my log files of startup oracle

4.1) SVRMGR> ORA-27100: shared memory realm already exists
HP-UX Error: 17: File exists
SVRMGR> Server Manager complete.

4.2) SVRMGR> ORA-00445: background process "PMON" did not start after 120 seconds
SVRMGR> Server Manager complete.

5) when i came into office, did a grep ora and found no processes at all. had to manually shutdown oracle and then restart before they are fine. i did my own analysis and the closest i could get was that i had two entries in crontab which attepmted to start the database at the same time which is at 7am and could not find out anything. however, i wanted to know why the above errors occur.