diff --git a/modules/enterprise/server/jar/src/main/java/org/rhq/enterprise/server/content/ContentManagerBean.java b/modules/enterprise/server/jar/src/main/java/org/rhq/enterprise/server/content/ContentManagerBean.java
index 0faf138cfad..4c626d513bb 100644
--- a/modules/enterprise/server/jar/src/main/java/org/rhq/enterprise/server/content/ContentManagerBean.java
+++ b/modules/enterprise/server/jar/src/main/java/org/rhq/enterprise/server/content/ContentManagerBean.java
@@ -32,6 +32,7 @@
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.sql.Statement;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -2038,6 +2039,15 @@ public void updateBlobStream(InputStream stream, PackageBits bits, Map<String, S
             try {
                 while (rs.next()) {
 
+                    if(DatabaseTypeFactory.isPostgres(DatabaseTypeFactory.getDefaultDatabaseType())) {
+                        // Unlink the current blob
+                        int unlinkedBlob = rs.getInt(1);
+                        Statement unlinkStatement = conn.createStatement();
+                        String unlinkSQLProto = "SELECT lo_unlink(%s)";
+                        String sqlUnlink = String.format(unlinkSQLProto, unlinkedBlob);
+                        unlinkStatement.execute(sqlUnlink);
+                    }
+
                     //We can not create a blob directly because BlobImpl from Hibernate is not acceptable
                     //for oracle and Connection.createBlob is not working on postgres.
                     //This blob will be not empty because we saved there PackageBits.EMPTY_BLOB