refactor(FILE_MANAGER): Update schema reference handling for grants and table operations

MARS_Packages/REL03/MARS-1057/new_version/FILE_MANAGER.pkb

@@ -2000,7 +2000,6 @@ AS
       vOdsPrefix VARCHAR2(500);
       vArchivePrefix VARCHAR2(500);
       
-      vTableExists NUMBER;
       vParameters VARCHAR2(4000);
       vAreaUpper VARCHAR2(20);
       
@@ -2011,14 +2010,14 @@ AS
          
          SELECT grantee, privilege, grantable
          BULK COLLECT INTO pGrantList
-         FROM DBA_TAB_PRIVS
+         FROM ALL_TAB_PRIVS
-         WHERE owner = 'ODS'
+         WHERE table_schema = SYS_CONTEXT('USERENV', 'CURRENT_SCHEMA')
            AND table_name = pTableName
            AND grantee NOT IN ('SYS', 'SYSTEM', 'PUBLIC')  -- Exclude system accounts
          ORDER BY grantee, privilege;
          
          ENV_MANAGER.LOG_PROCESS_EVENT(
-            'Saved ' || pGrantList.COUNT || ' grants for table: ODS.' || pTableName, 
+            'Saved ' || pGrantList.COUNT || ' grants for table: ' || SYS_CONTEXT('USERENV', 'CURRENT_SCHEMA') || '.' || pTableName, 
             'INFO'
          );
       EXCEPTION
@@ -2055,7 +2054,7 @@ AS
          FOR i IN 1..pGrantList.COUNT LOOP
             BEGIN
                vGrantSQL := 'GRANT ' || pGrantList(i).privilege || 
-                           ' ON ODS.' || pTableName || 
+                           ' ON ' || SYS_CONTEXT('USERENV', 'CURRENT_SCHEMA') || '.' || pTableName || 
                            ' TO ' || pGrantList(i).grantee;
                
                IF pGrantList(i).grantable = 'YES' THEN
@@ -2084,7 +2083,7 @@ AS
          
          ENV_MANAGER.LOG_PROCESS_EVENT(
             'Restored ' || vGrantCount || ' of ' || pGrantList.COUNT || 
-            ' grants for table: ODS.' || pTableName || 
+            ' grants for table: ' || SYS_CONTEXT('USERENV', 'CURRENT_SCHEMA') || '.' || pTableName || 
             CASE WHEN vFailCount > 0 THEN ' (' || vFailCount || ' failed)' ELSE '' END, 
             'INFO'
          );
@@ -2092,17 +2091,17 @@ AS
       
       PROCEDURE DROP_IF_EXISTS(pTableName VARCHAR2) IS
       BEGIN
-         SELECT COUNT(*) INTO vTableExists
+         ENV_MANAGER.LOG_PROCESS_EVENT('Attempting to drop table: ' || pTableName, 'DEBUG');
-         FROM ALL_TABLES
+         EXECUTE IMMEDIATE 'DROP TABLE ' || SYS_CONTEXT('USERENV', 'CURRENT_SCHEMA') || '.' || pTableName;
-         WHERE OWNER = 'ODS' AND TABLE_NAME = pTableName;
+         ENV_MANAGER.LOG_PROCESS_EVENT('Table dropped successfully: ' || pTableName, 'INFO');
-         
-         IF vTableExists > 0 THEN
-            ENV_MANAGER.LOG_PROCESS_EVENT('Dropping existing table: ' || pTableName, 'INFO');
-            EXECUTE IMMEDIATE 'DROP TABLE ODS.' || pTableName;
-         END IF;
       EXCEPTION
          WHEN OTHERS THEN
+            IF SQLCODE = -942 THEN  -- ORA-00942: table or view does not exist
+               ENV_MANAGER.LOG_PROCESS_EVENT('Table does not exist, skipping drop: ' || pTableName, 'INFO');
+            ELSE
                ENV_MANAGER.LOG_PROCESS_EVENT('Error dropping table ' || pTableName || ': ' || SQLERRM, 'WARNING');
+               RAISE;  -- Re-raise if not "table not exists" error
+            END IF;
       END DROP_IF_EXISTS;
       
    BEGIN