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#!/bin/bash
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TODAY=`date +%Y-%m-%d`
DATE=`date +%Y%b%d`
YESTERDAY=`date -d '-1 day' +%b%Y`
YDAY=`date -d '-1 day' +%Y%b%d`
HOST=`hostname`
LOG_LOCATION="/home/oracle/utility_script/dba_maint/logs"

mkdir -p ${LOG_LOCATION}

LOG_FILE="${LOG_LOCATION}/oracle_files_cleanup_${DATE}.log"

rm ${LOG_FILE} 2>/dev/null

dbenv ()
{
        ORACLE_HOME=`cat /etc/oratab | grep ^$ORACLE_SID | cut -d":" -f2`; export ORACLE_HOME
        PATH=$ORACLE_HOME/bin:$PATH ; export PATH
        LD_LIBRARY_PATH=$ORACLE_HOME/lib ; export LD_LIBRARY_PATH
        DB_VERSION=`cat /etc/oratab | grep "^$ORACLE_SID" | cut -d":" -f2 | rev | cut -d"/" -f2| rev | cut -d"." -f1`; export DB_VERSION
}


dbcheck()
{
        sqlplus / as sysdba << EOF &>${LOG_LOCATION}/dbcheck.out
        exit
EOF
}

sql_plus()
{
        sqlplus -s / as sysdba << EOF &>/dev/null
        SET NEWPAGE NONE;
        set lines 200 pages 300;
        set feedback off;
        set heading off;
        spool ${LOG_LOCATION}/$1.log
        $2
        exit
EOF
}

for SID in `ps -eaf | grep pmon | grep -v grep | awk '{print $8}' | sort | cut -d"_" -f3`
do
        ORACLE_SID=${SID} ; export ORACLE_SID
        dbenv ${ORACLE_SID}                                                     #-- Passing the ORACLE_SID to dbenv function to source the database.
        if [ ${DB_VERSION} -eq 11 -o ${DB_VERSION} -eq 12 ]
        then
                dbcheck
                DB_CHECK=`cat ${LOG_LOCATION}/dbcheck.out | egrep "ORA|SP2|idle"`
                LOWER_SID=`echo ${ORACLE_SID} | tr '[A-Z]' '[a-z]'`

#-- Queries to fetch the proper log location from database

                ADUMP="select DISPLAY_VALUE from v$parameter where name='audit_file_dest';"
                BDUMP="select DISPLAY_VALUE from v$parameter where name='background_dump_dest';"
                CDUMP="select DISPLAY_VALUE from v$parameter where name='core_dump_dest';"
                UDUMP="select DISPLAY_VALUE from v$parameter where name='user_dump_dest';"
                TRACE_FILE="select DISPLAY_VALUE from v$parameter where name='diagnostic_dest';"

#-- Calls the sql_plus function with the parameters as the logname and SQL query

                sql_plus "adump_${ORACLE_SID}" "${ADUMP}"
                sql_plus "bdump_${ORACLE_SID}" "${BDUMP}"
                sql_plus "cdump_${ORACLE_SID}" "${CDUMP}"
                sql_plus "udump_${ORACLE_SID}" "${UDUMP}"
                sql_plus "trace_${ORACLE_SID}" "${TRACE_FILE}"

#-- Remove any empty lines after the log location

                ADUMP_LOC=`cat ${LOG_LOCATION}/adump_${ORACLE_SID}.log | sed 's/[[:blank:]]*$//'`
                BDUMP_LOC=`cat ${LOG_LOCATION}/bdump_${ORACLE_SID}.log | sed 's/[[:blank:]]*$//'`
                CDUMP_LOC=`cat ${LOG_LOCATION}/cdump_${ORACLE_SID}.log | sed 's/[[:blank:]]*$//'`
                UDUMP_LOC=`cat ${LOG_LOCATION}/udump_${ORACLE_SID}.log | sed 's/[[:blank:]]*$//'`
                TRACE_LOC=`cat ${LOG_LOCATION}/trace_${ORACLE_SID}.log | sed 's/[[:blank:]]*$//'`

#-- If the Database is not in idle state or without any errors, start housekeeping

                if [ -z "${DB_CHECK}" ]
                then
                        echo -e "tttt HOUSEKEEPING for database : ${ORACLE_SID}" >>${LOG_FILE}
                        echo -e "tttt ============ === ======== = =============" >>${LOG_FILE}

#-- Cleans .aud files older than 60 days in ADUMP location

                        if [ ! -z "${ADUMP_LOC}" ]
                        then
                                        echo -e "tttAdump cleanup" >> ${LOG_FILE}
                        fi

#-- Cleans .trm or .trc files older than 60 days in BDUMP location

                        if [ ! -z "${BDUMP_LOC}" ]
                        then
                                        echo -e "nntttBdump cleanup" >> ${LOG_FILE}
                        fi

#-- Cleans .trm or .trc files older than 60 days in CDUMP location

                        if [ ! -z "${CDUMP_LOC}" ]
                        then
                                        echo -e "ntttCdump cleanup" >> ${LOG_FILE}
                        fi

#-- Cleans .trm or .trc files older than 60 days in UDUMP location

                        if [ ! -z "${UDUMP_LOC}" ]
                        then
                                        echo -e "ntttUdump cleanup" >> ${LOG_FILE}
                        fi

#-- Rotates the Database alert log on 01st of every month.

                        if [ `date +%d` -eq 01 ]
                        then
                                if [ ! -z "${TRACE_LOC}" ]
                                then
                                        echo -e "ntttALERT LOG ROTATION" >> ${LOG_FILE}
                                fi
                        fi

#-- Rotates the Listener log on 01st of every month.

                        if [ `date +%d` -eq 01 ]
                                        if [ ! -z "${TRACE_LOC}" ]
                                        then
                                                        echo -e "ntttLISTENER LOG ROTATION" >> ${LOG_FILE}
                                        fi
                        fi
                else
                        echo -e "ERROR : Please fix the below error in database - ${ORACLE_SID} on host - ${HOST} n ${DB_CHECK}" >> ${LOG_LOCATION}/house_keeping_fail_${ORACLE_SID}_${DATE}.log
                fi
        elif [ ${DB_VERSION} -eq 10 -o ${DB_VERSION} -eq 9 ]
        then
                dbcheck
                DB_CHECK=`cat ${LOG_LOCATION}/dbcheck.out | egrep "ORA|SP2|idle"`

#-- Queries to fetch the proper log location from database

                ADUMP="select DISPLAY_VALUE from v$parameter where name='audit_file_dest';"
                BDUMP="select DISPLAY_VALUE from v$parameter where name='background_dump_dest';"
                CDUMP="select DISPLAY_VALUE from v$parameter where name='core_dump_dest';"
                UDUMP="select DISPLAY_VALUE from v$parameter where name='user_dump_dest';"

#-- Calls the sql_plus function with the parameters as the logname and SQL query

                sql_plus "adump_${ORACLE_SID}" "${ADUMP}"
                sql_plus "bdump_${ORACLE_SID}" "${BDUMP}"
                sql_plus "cdump_${ORACLE_SID}" "${CDUMP}"
                sql_plus "udump_${ORACLE_SID}" "${UDUMP}"

#-- Remove any empty lines after the log location

                ADUMP_LOC=`cat ${LOG_LOCATION}/adump_${ORACLE_SID}.log | sed 's/[[:blank:]]*$//'`
                BDUMP_LOC=`cat ${LOG_LOCATION}/bdump_${ORACLE_SID}.log | sed 's/[[:blank:]]*$//'`
                CDUMP_LOC=`cat ${LOG_LOCATION}/cdump_${ORACLE_SID}.log | sed 's/[[:blank:]]*$//'`
                UDUMP_LOC=`cat ${LOG_LOCATION}/udump_${ORACLE_SID}.log | sed 's/[[:blank:]]*$//'`

#-- If the Database is not in idle state or without any errors, start housekeeping

                if [ -z "${DB_CHECK}" ]
                then
#-- Cleans .aud files older than 60 days in ADUMP location

                        if [ ! -z "${ADUMP_LOC}" ]
                                        echo -e "tttAdump cleanup" >> ${LOG_FILE}
                        fi

#-- Cleans .trm or .trc files older than 60 days in BDUMP location

                        if [ ! -z "${BDUMP_LOC}" ]
                        then
                                        echo -e "nntttBdump cleanup" >> ${LOG_FILE}
                        fi

#-- Cleans .trm or .trc files older than 60 days in CDUMP location

                        if [ ! -z "${CDUMP_LOC}" ]
                        then
                                        echo -e "ntttCdump cleanup" >> ${LOG_FILE}
                        fi

#-- Cleans .trm or .trc files older than 60 days in UDUMP location

                        if [ ! -z "${UDUMP_LOC}" ]
                        then
                                        echo -e "ntttUdump cleanup" >> ${LOG_FILE}
                        fi

#-- Rotates the ${DB_VERSION} version Database alert log on 01st of every month.

                        if [ `date +%d` -eq 01 ]
                        then
                                if [ ! -z "${BDUMP_LOC}" ]
                                then
                                        echo -e "ntttALERT LOG ROTATION" >> ${LOG_FILE}
                                fi
                        fi
               else
                       echo -e "ERROR : Please fix the below error in database - ${ORACLE_SID} on host - ${HOST} n ${DB_CHECK}" >> ${LOG_LOCATION}/house_keeping_fail_${ORACLE_SID}_${DATE}.log
               fi
        fi
done
exit $?
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