I want all the records till the end of the file which are greater than given date in unix - unix

Question

I want all the records till the end of the log file which are greater than given date...
suppose given date is Mon Dec 14 22:00:03 2015 then i want all the lines in the log file till end when first occurrence of greater than this date is found.
ex: awk ' { if ( $0 > "Tue Dec 15 08:00:00 2015") print } ' file.out
only prints lines greater than date but i want all lines after match till end of file..
please note that
1. i can not use regex since i dont know if entry is present in the log file for that date i.e H:M:S so i have to use greater than date functionality.
Date is not present on every line of the lg file. it is present in between but on new line
please help
sample log file:::
Mon Dec 14 02:00:00 2015
Clearing Resource Manager plan via parameter
Mon Dec 14 07:02:57 2015
***********************************************************************
Fatal NI connect error 12504, connecting to:
(DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=)(CID=(PROGRAM=oracle)(HOST=ltest8)(USER=oracle)))(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.115)(PORT=1521)))
VERSION INFORMATION:
TNS for Linux: Version 11.1.0.6.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 11.1.0.6.0 - Production
Time: 14-DEC-2015 07:02:57
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Mon Dec 14 08:01:37 2015
***********************************************************************
Fatal NI connect error 12504, connecting to:
(DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=)(CID=(PROGRAM=oracle)(HOST=ltest8)(USER=oracle)))(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.115)(PORT=1521)))
VERSION INFORMATION:
TNS for Linux: Version 11.1.0.6.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 11.1.0.6.0 - Production
Time: 14-DEC-2015 08:01:37
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Mon Dec 14 08:54:33 2015
***********************************************************************
Fatal NI connect error 12504, connecting to:
(DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=)(CID=(PROGRAM=oracle)(HOST=ltest8)(USER=oracle)))(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.115)(PORT=1521)))
VERSION INFORMATION:
TNS for Linux: Version 11.1.0.6.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 11.1.0.6.0 - Production
Time: 14-DEC-2015 08:54:33
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Mon Dec 14 08:57:18 2015
Thread 1 advanced to log sequence 232
Current log# 2 seq# 232 mem# 0: /u04/app/oracle/oradata/kcom/redo02.log
Mon Dec 14 08:57:19 2015
Errors in file /u01/app/oracle/diag/rdbms/kcom/Rialto/trace/Rialto_arc3_3953.trc:
ORA-19815: WARNING: db_recovery_file_dest_size of 268435456 bytes is 100.00% used, and has 0 remaining bytes available.
************************************************************************
You have following choices to free up space from flash recovery area:
1. Consider changing RMAN RETENTION POLICY. If you are using Data Guard,
then consider changing RMAN ARCHIVELOG DELETION POLICY.
2. Back up files to tertiary device such as tape using RMAN
BACKUP RECOVERY AREA command.
3. Add disk space and increase db_recovery_file_dest_size parameter to
reflect the new space.
4. Delete unnecessary files using RMAN DELETE command. If an operating
system command was used to delete files, then use RMAN CROSSCHECK and
DELETE EXPIRED commands.
************************************************************************
Mon Dec 14 09:17:45 2015
***********************************************************************
Fatal NI connect error 12504, connecting to:
(DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=)(CID=(PROGRAM=oracle)(HOST=ltest8)(USER=oracle)))(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.115)(PORT=1521)))
VERSION INFORMATION:
TNS for Linux: Version 11.1.0.6.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 11.1.0.6.0 - Production
Time: 14-DEC-2015 09:17:45
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Mon Dec 14 10:25:24 2015
QKSRC: ViewText[ecode=942] = SELECT /*+ result_cache */ ID, 'PLUGIN_'||NAME AS NAME, STANDARD_ATTRIBUTES, SQL_MIN_COLUMN_COUNT, NVL(SQL_MAX_COLUMN_COUNT, 999) AS SQL_MAX_COLUMN_COUNT, SQL_EXAMPLES FROM WWV_FLOW_PLUGINS WHERE FLOW_ID = :B2 AND PLUGIN_TYPE = :B1
Mon Dec 14 14:31:14 2015
Thread 1 advanced to log sequence 233
Current log# 3 seq# 233 mem# 0: /u04/app/oracle/oradata/kcom/redo03.log
Mon Dec 14 14:31:15 2015
Errors in file /u01/app/oracle/diag/rdbms/kcom/Rialto/trace/Rialto_arc0_3947.trc:
ORA-19815: WARNING: db_recovery_file_dest_size of 268435456 bytes is 100.00% used, and has 0 remaining bytes available.
************************************************************************
You have following choices to free up space from flash recovery area:
1. Consider changing RMAN RETENTION POLICY. If you are using Data Guard,
then consider changing RMAN ARCHIVELOG DELETION POLICY.
2. Back up files to tertiary device such as tape using RMAN
BACKUP RECOVERY AREA command.
3. Add disk space and increase db_recovery_file_dest_size parameter to
reflect the new space.
4. Delete unnecessary files using RMAN DELETE command. If an operating
system command was used to delete files, then use RMAN CROSSCHECK and
DELETE EXPIRED commands.
************************************************************************
Mon Dec 14 20:28:23 2015
Thread 1 advanced to log sequence 234
Current log# 4 seq# 234 mem# 0: /u04/app/oracle/oradata/kcom/redo04.log
Mon Dec 14 20:28:24 2015
Errors in file /u01/app/oracle/diag/rdbms/kcom/Rialto/trace/Rialto_arc1_3949.trc:
ORA-19815: WARNING: db_recovery_file_dest_size of 268435456 bytes is 100.00% used, and has 0 remaining bytes available.
************************************************************************
You have following choices to free up space from flash recovery area:
1. Consider changing RMAN RETENTION POLICY. If you are using Data Guard,
then consider changing RMAN ARCHIVELOG DELETION POLICY.
2. Back up files to tertiary device such as tape using RMAN
BACKUP RECOVERY AREA command.
3. Add disk space and increase db_recovery_file_dest_size parameter to
reflect the new space.
4. Delete unnecessary files using RMAN DELETE command. If an operating
system command was used to delete files, then use RMAN CROSSCHECK and
DELETE EXPIRED commands.
************************************************************************
Mon Dec 14 22:00:00 2015
Setting Resource Manager plan SCHEDULER[0x2C09]:DEFAULT_MAINTENANCE_PLAN via scheduler window
Setting Resource Manager plan DEFAULT_MAINTENANCE_PLAN via parameter
Mon Dec 14 22:00:03 2015
Mon Dec 14 22:00:03 2015
Logminer Bld: Lockdown Complete. DB_TXN_SCN is UnwindToSCN (LockdownSCN) is 18957974
Tue Dec 15 02:00:00 2015
Clearing Resource Manager plan via parameter
Tue Dec 15 02:00:02 2015

Answer 1

Simple python 2 parser with hardcoded datetime and input file. Tested with your given log. It has plenty of room for optimization but it works as a start I guess.
#/usr/bin/env python
import re
from datetime import datetime
# year, month, day, hour, minute
filter_from = datetime(2015, 12, 13, 23, 40)
with open("tmp.log") as log:
match = False
for line in log:
if (match):
print line
else:
candidate = re.match(r'[A-Z][a-z][a-z] [A-Z][a-z][a-z] \d\d \d\d:\d\d:\d\d \d\d\d\d', line)
if candidate:
parsed_date = datetime.strptime(candidate.group(0), "%a %b %d %X %Y")
if parsed_date > filter_from:
match = True
print line