Thank you Steve for the response. my file is as below
<?xml version="1.0" encoding="UTF-8"?>
<databaseChangeLog
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
<changeSet author="KDBAS" id="1">
<preConditions onFail="CONTINUE">
<and>
<sqlCheck expectedResult="1">select count(*) from v$database where name like '%ATG%'</sqlCheck>
<sqlCheck expectedResult="0">select count(*) from dba_tablespaces where tablespace_name like '%schema1_DATA'</sqlCheck>
<sqlCheck expectedResult="0">select count(*) from dba_tablespaces where tablespace_name like '%schema2_DATA'</sqlCheck>
</and>
</preConditions>
<property name="dbname1" value="sit1" dbms="oracle" />
<property name="dbname2" value="sit2" dbms="oracle"/>
<sql>
create tablespace schema1_data datafile '/u01/app/oracle/oradata/"${dbname1}"/schema1_liquibase.dbf' size 1G ;
CREATE TABLESPACE schema2_DATA DATAFILE '/u01/app/oracle/oradata/"${dbname1}"/schema2_liquibase.dbf' size 1g;
create tablespace schema1_data datafile '/u01/app/oracle/oradata/"${dbname2}"/schema1_liquibase1.dbf' size 1G ;
CREATE TABLESPACE schema2_DATA DATAFILE '/u01/app/oracle/oradata/"${dbname2}"/schema2_liquibase.dbf' size 1g;
</sql>
</changeSet>
</databaseChangeLog>